Tension testing apparatus for ai server long-life capacitor electrode foil

Abstract

The application discloses a tensile force detection device for an AI server capacitor electrode foil with long service life, and relates to the technical field of electrode foil tensile force detection devices.The device comprises a positioning clamp arranged on a base, and the positioning clamp comprises a movable clamping mechanism, a fixed clamping mechanism and a sliding groove.A stress simulation mechanism is arranged between the movable clamping mechanism and the fixed clamping mechanism.The stress simulation mechanism is driven by a second driving mechanism to drive the first arc-shaped support plate and the second arc-shaped support plate to move synchronously, so that the electrode foil is attached to the arc-shaped surface, and then a fine adjustment mechanism is used to accurately adjust the rotation angle of the first arc-shaped support plate and the second arc-shaped support plate, thereby reproducing the bending and stacking state of the electrode foil inside the capacitor, realizing non-planar stress simulation of the electrode foil, avoiding excessive unilateral stress of the electrode foil during detection and fracture of the electrode foil, and significantly improving the consistency of the detection data and the actual service scene, thereby providing a reliable basis for the design of long-service-life capacitors.

Description

Technical Field

[0001] This invention relates to the field of tensile testing equipment for electrode foil, and particularly to tensile testing equipment for electrode foil of long-life capacitors used in AI servers. Background Technology

[0002] As the core hardware carrier for artificial intelligence technology applications, AI servers require long-term high-load operation, and the stability and lifespan of their internal components directly affect the overall performance of the server. Long-life capacitors, as a key component of the AI ​​server power module, play a crucial role in energy storage and filtering. The electrode foil, as the core component of the capacitor, has its mechanical properties as a key indicator for ensuring its long-life operation. With the miniaturization and high-density development of AI servers, the accompanying long-life capacitors also adopt miniaturized designs, with reduced electrode foil width and a bent, stacked state inside the capacitor. Therefore, the tensile strength testing of the electrode foil needs to be adapted to the requirements of small size and non-planar force application. However, existing tensile strength testing equipment for the electrode foil of long-life capacitors used in AI servers still has the following shortcomings in use:

[0003] For example, Chinese Patent CN219161828U discloses an easy-to-operate testing device for electrode foil production and processing, including a base plate, casters, a bracket, a slide, an upper tension plate, a spring seat, a jaw slide, a spring, a spring frame, a slide rod, jaws, a jaw electric push rod, a lower tension plate, an electric tension rod, and a tension gauge. This device uses the cooperation of the upper and lower tension plates to test the tension of the electrode foil. The electrode foil is clamped in the jaws by the jaw electric push rod, and the electric tension rod pulls down the lower tension plate. The tension gauge then tests the electrode foil. This device has a simpler structure and is easier to operate, making the testing device widely applicable. The spring design allows the upper tension plate to reset after testing the electrode foil, preventing damage during reuse and providing a buffering effect. The casters also make the device easier to move and use.

[0004] The aforementioned electrode foil tensile testing device can only perform tensile testing on flat electrode foils and cannot simulate the bending and stacking state of the electrode foil inside the capacitor. This causes the electrode foil to break due to excessive force on one side during testing, making it difficult to reflect the tensile resistance in actual installation and use. Furthermore, the clamping block size of the clamping mechanism is designed for electrode foils of conventional width. For smaller electrode foils, positioning deviation is prone to occur during clamping, and reducing the size of the clamping block will lead to a decrease in its rigidity, resulting in deformation under force and affecting the accuracy of tensile force transmission. It cannot guarantee the clamping stability of small-sized electrode foils, causing a large deviation between the test data and the mechanical performance of the electrode foil in actual service scenarios, and failing to provide an accurate basis for the long-life design of capacitors. Summary of the Invention

[0005] The purpose of this application is to provide a tensile testing device for long-life capacitor electrode foil for AI servers, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a tensile testing device for long-life capacitor electrode foil for AI servers, comprising a positioning fixture mounted on a base, the positioning fixture including a movable clamping mechanism, a fixed clamping mechanism, and a slide groove; the base has a slide groove, the movable clamping mechanism is slidably connected to the slide groove, the fixed clamping mechanism is fixedly mounted on the base, and both ends of the electrode foil are respectively clamped to the movable clamping mechanism and the fixed clamping mechanism; a first driving mechanism is mounted on the base and is used to drive the movable clamping mechanism to move; a force simulation mechanism is provided between the movable clamping mechanism and the fixed clamping mechanism; the force simulation mechanism includes: a first mounting base, a first arc-shaped support plate, a second driving mechanism, a fine-tuning mechanism, two pairs of first connecting rods, and a pair of second arc-shaped support plates; wherein, a slide is fixedly mounted on the base, and the first mounting base is slidably connected to the slide. The sliding direction of the first mounting base is perpendicular to the direction of the tensile force on the electrode foil; one pair of the first connecting rods is hinged between the movable clamping mechanism and the first mounting base, and another pair of the first connecting rods is hinged between the fixed clamping mechanism and the first mounting base; the first arc-shaped support plate is disposed on the first mounting base; when the tensile force on the electrode foil is detected, the first arc-shaped support plate is in contact with the surface of the electrode foil; a pair of second arc-shaped support plates are respectively hinged to both ends of the first arc-shaped support plate, and the hinge axis between the first arc-shaped support plate and the second arc-shaped support plate is perpendicular to the sliding direction of the first mounting base; the second driving mechanism is disposed between the first mounting base and the first arc-shaped support plate, and is used to drive the first arc-shaped support plate to move along the sliding direction of the first mounting base; the fine-tuning mechanism is disposed on the second driving mechanism, and is used to fine-tune the rotation angle between the first arc-shaped support plate and the second arc-shaped support plate.

[0007] Preferably, a rubber sheet is provided on the second arc-shaped support plate, and the rubber sheet is disposed on the contact surface between the second arc-shaped support plate and the electrode foil.

[0008] Preferably, the second drive mechanism includes a first motor, a first screw, a first threaded sleeve, and a plurality of sliding shafts; the first motor is mounted on a first mounting base, the first screw is coaxially connected to the output end of the first motor, the plurality of sliding shafts are fixed to the first mounting base, the plurality of sliding shafts are slidably connected to the same mounting plate along their length direction, the first threaded sleeve is fixed between the mounting plate and the first arc-shaped support plate, and the first screw is threadedly inserted into the first threaded sleeve.

[0009] Preferably, the fine-tuning mechanism includes a bidirectional screw, a worm gear, a worm, a pair of second threaded sleeves, and a rotating rod; the bidirectional screw is rotatably connected to the mounting plate about its axis, the worm gear is coaxially fixed to the bidirectional screw, the worm is rotatably connected to the mounting plate about its axis, and the worm and the worm gear mesh with each other, the pair of second threaded sleeves are respectively threaded onto both ends of the bidirectional screw, and the rotating rod is hinged between the second threaded sleeves and the second arc-shaped support plate;

[0010] An angle sensor is provided at the rotational connection position between the first arc-shaped support plate and the second arc-shaped support plate; a displacement sensor is provided between the mounting plate and the first mounting base.

[0011] Preferably, the movable clamping mechanism and the fixed clamping mechanism have the same structure. Taking the movable clamping mechanism as an example, the movable clamping mechanism includes a second mounting base, a third mounting base, a clamping plate, an anti-slip and wear-resistant pad, and a third driving mechanism. The second mounting base is slidably connected to the slide groove, and a rotating shaft is provided on the second mounting base. The third mounting base is rotatably connected to the second mounting base through the rotating shaft. A clamping cavity is opened on the third mounting base. The clamping plate is slidably connected to the clamping cavity through a guide rail. An anti-slip and wear-resistant pad is provided at the bottom of the clamping plate. The third driving mechanism is installed on the third mounting base, and the output end of the third driving mechanism is connected to the clamping plate.

[0012] Preferably, the movable clamping mechanism further includes an elastic pad and a pressure sensor; the pressure sensor is provided in the third mounting base, the elastic pad is provided on the top of the pressure sensor and is provided in the clamping cavity, and the end of the electrode foil is clamped between the anti-slip and wear-resistant liner and the elastic pad.

[0013] Preferably, the third driving mechanism includes a telescopic airbag, a piston, a driving component, and multiple rings; the telescopic airbag is disposed in the clamping cavity, and the bottom of the telescopic airbag abuts against the clamping plate; the multiple rings are spaced apart within the telescopic airbag; an air chamber is provided in the third mounting base, the air chamber is connected to the telescopic airbag, the piston is slidably connected to the air chamber, and the driving component is mounted on the third mounting base; the output end of the driving component is connected to the piston and is used to drive the piston to move, thereby adjusting the air pressure inside the telescopic airbag.

[0014] Preferably, the third drive mechanism further includes a base plate, a ball joint, a shaft, and a sliding sleeve; the base plate is disposed at the bottom of the telescopic airbag, the ball joint is disposed on the base plate, the sliding sleeve is coaxially fixed to the piston, the shaft is disposed between the ball joint and the sliding sleeve, and one end of the shaft is coaxially inserted into the sliding sleeve; the sliding sleeve has an air hole so that the interior of the sliding sleeve communicates with the telescopic airbag.

[0015] Preferably, the movable clamping mechanism further includes a limiting mechanism, which includes a third screw, a pair of slide rails, and a connecting shaft; the pair of connecting shafts are slidably connected to a third mounting base along their length direction, the slide rails are fixed to one end of the connecting shafts, and the clamping plate is slidably connected to the slide rails; the other end of the pair of connecting shafts is fixed with the same second connecting rod, the third screw is threaded into the second connecting rod, and one end of the third screw is rotatably connected to the third mounting base around its axis.

[0016] Preferably, the first drive mechanism includes a second motor and a second screw; the second motor is mounted on the base, the second screw is rotatably connected to the base around its axis, and the output end of the second motor is coaxially connected to the second screw; the second screw is threaded into a third mounting base, and the axis of the second screw is parallel to the length direction of the slide groove.

[0017] In summary, the technical effects and advantages of this invention are as follows:

[0018] 1. This invention sets up a force simulation mechanism, which drives the first arc-shaped support plate to move along the slide block through the second driving mechanism, and drives the second arc-shaped support plate to move synchronously so that the electrode foil fits against the arc-shaped surface. Then, the rotation angle of the first arc-shaped support plate and the second arc-shaped support plate is precisely adjusted by the fine-tuning mechanism to reproduce the bending and stacking state of the electrode foil inside the capacitor. This realizes the simulation of non-planar force on the electrode foil, avoids the electrode foil from breaking due to excessive force on one side during testing, and significantly improves the consistency between the test data and the actual service scenario, providing a reliable basis for the design of long-life capacitors.

[0019] 2. This invention sets up a movable clamping mechanism and a fixed clamping mechanism. The clamping plate is driven to move along the guide rail by a third drive mechanism. The anti-slip and wear-resistant pad increases the friction with the electrode foil. The elastic pad compensates for dimensional deviations and evenly distributes the clamping force. The pressure sensor monitors the clamping force in real time, so as to achieve stable clamping of small-sized electrode foil. This solves the problems of easy positioning deviation and inaccurate tensile force transmission caused by insufficient rigidity in traditional clamping mechanisms for small-sized electrode foil, ensuring stable and reliable clamping process and reducing detection errors.

[0020] 3. This invention incorporates a third driving mechanism, which uses a driving component to drive a piston to adjust the air pressure within the air chamber, thereby controlling the expansion or contraction of the telescopic airbag to move the clamping plate. The circular ring helps maintain the stable shape of the telescopic airbag. The ball joint, insert shaft, and sliding sleeve adapt to the rotation of the third mounting base, ensuring uniform transmission of clamping force and preventing localized pressure concentration from damaging the electrode foil. Simultaneously, it enhances the self-adaptive capability of the clamping mechanism, adapting to posture changes during non-planar force testing, further guaranteeing the stability and accuracy of the testing process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention;

[0024] Figure 3 This is a three-dimensional enlarged structural schematic diagram of the force simulation mechanism of the present invention;

[0025] Figure 4 This is a three-dimensional enlarged schematic diagram of a portion of the fine-tuning mechanism of the present invention;

[0026] Figure 5 This is a three-dimensional enlarged structural diagram of the first arc-shaped support plate of the present invention;

[0027] Figure 6 This is a first-view magnified three-dimensional structural diagram of the movable clamping mechanism of the present invention;

[0028] Figure 7 This is a magnified three-dimensional structural diagram of the movable clamping mechanism of the present invention from a second perspective.

[0029] Figure 8 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the movable clamping mechanism of the present invention;

[0030] Figure 9 For the present invention Figure 8 Enlarged structural diagram of region A in the middle;

[0031] Figure 10 This is a partially cross-sectional, three-dimensional magnified structural diagram of the telescopic airbag of the present invention.

[0032] In the diagram: 1. Base; 2. Positioning clamp; 21. Movable clamping mechanism; 211. Second mounting base; 212. Third mounting base; 213. Guide rail; 214. Clamping plate; 215. Anti-slip and wear-resistant pad; 216. Third drive mechanism; 2161. Telescopic airbag; 2162. Ring; 2163. Base plate; 2164. Ball joint; 2165. Insert shaft; 2166. Sliding sleeve; 2167. Air chamber; 2168. Piston; 2169. Drive component; 217. Elastic washer; 218. Pressure sensor; 219. Limiting mechanism; 2191. Slide rail; 2192. Connecting shaft; 2193. Second connecting rod; 21 94. Third screw; 22. Fixed clamping mechanism; 23. Slide groove; 3. First drive mechanism; 31. Second motor; 32. Second screw; 4. Force simulation mechanism; 41. Slide seat; 42. First mounting seat; 43. First connecting rod; 44. First arc-shaped support plate; 45. Second arc-shaped support plate; 46. Second drive mechanism; 461. First motor; 462. First screw; 463. Slide shaft; 464. Mounting plate; 465. First threaded sleeve; 47. Fine-tuning mechanism; 471. Bidirectional screw; 472. Worm gear; 473. Worm; 474. Second threaded sleeve; 475. Rotating rod; 48. Rubber sheet. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-3The tensile testing device for long-life capacitor electrode foil used in AI servers shown includes a positioning fixture 2 mounted on a base 1. The positioning fixture 2 includes a movable clamping mechanism 21, a fixed clamping mechanism 22, and a slide groove 23. The base 1 has a slide groove 23, the movable clamping mechanism 21 is slidably connected to the slide groove 23, and the fixed clamping mechanism 22 is fixedly mounted on the base 1. The two ends of the electrode foil are respectively clamped to the movable clamping mechanism 21 and the fixed clamping mechanism 22. A first driving mechanism 3 is mounted on the base 1 and is used to drive the movable clamping mechanism 21 to move. A force simulation mechanism 4 is provided between the movable clamping mechanism 21 and the fixed clamping mechanism 22. The force simulation mechanism 4 includes: a first mounting base 42, a first arc-shaped support plate 44, a second driving mechanism 46, a fine-tuning mechanism 47, two pairs of first connecting rods 43, and a pair of second arc-shaped support plates 45. A slide 41 is fixedly mounted on the base 1, and the first mounting base 42 is slidably connected to the slide 41. The sliding direction is perpendicular to the direction of the tension force on the electrode foil; one pair of first connecting rods 43 are hinged between the movable clamping mechanism 21 and the first mounting base 42, and another pair of first connecting rods 43 are hinged between the fixed clamping mechanism 22 and the first mounting base 42; a first arc-shaped support plate 44 is disposed on the first mounting base 42; when the tension force of the electrode foil is tested, the first arc-shaped support plate 44 is in contact with the surface of the electrode foil; a pair of second arc-shaped support plates 45 are respectively hinged to both ends of the first arc-shaped support plate 44, and the hinge axis between the first arc-shaped support plate 44 and the second arc-shaped support plate 45 is perpendicular to the sliding direction of the first mounting base 42; a second driving mechanism 46 is disposed between the first mounting base 42 and the first arc-shaped support plate 44, and is used to drive the first arc-shaped support plate 44 to move along the sliding direction of the first mounting base 42; a fine-tuning mechanism 47 is disposed on the second driving mechanism 46, and is used to fine-tune the rotation angle between the first arc-shaped support plate 44 and the second arc-shaped support plate 45.

[0035] It should be noted that, firstly, the two ends of the electrode foil are clamped between the movable clamping mechanism 21 and the fixed clamping mechanism 22 respectively, with the middle position of the electrode foil above the first arc-shaped support plate 44. Then, the second drive mechanism 46 is activated to drive the first arc-shaped support plate 44 to move along the slide block 41, causing the second arc-shaped support plate 45 to move synchronously so that the electrode foil fits against the arc-shaped surface. Then, the fine-tuning mechanism 47 is activated to adjust the angle of the second arc-shaped support plate 45. Subsequently, the first drive mechanism 3 is activated to drive the movable clamping mechanism 21 to move along the slide groove 23, applying tension to the electrode foil to complete the detection.

[0036] The electrode foil is stably clamped by the cooperation of the movable clamping mechanism 21 and the fixed clamping mechanism 22. The sliding of the first mounting base 42 along the slide base 41 can adapt to different bending position requirements. The non-planar shape of the electrode foil is accurately reproduced by the first arc-shaped support plate 44 and the second arc-shaped support plate 45. The fine-tuning mechanism 47 can further optimize the bending angle to ensure simulation accuracy. The overall structure has strong linkage and can adapt to the detection of small-sized electrode foils. It makes the electrode foil uniformly stressed during the detection process, effectively ensuring the consistency between the detection data and the actual service scenario, and providing a reliable basis for the design of long-life capacitors.

[0037] Please see Figures 2-3 A rubber sheet 48 is provided on the second arc-shaped support plate 45, and the rubber sheet 48 is disposed on the contact surface between the second arc-shaped support plate 45 and the electrode foil. It should be noted that when the electrode foil is attached to the second arc-shaped support plate 45 for non-planar force simulation, the rubber sheet 48 on the surface of the second arc-shaped support plate 45 is in direct contact with the electrode foil, and undergoes adaptive elastic deformation with the bending deformation of the electrode foil, always maintaining a tight fit with the surface of the electrode foil. The rubber sheet 48 has good elasticity, which can increase the contact area with the electrode foil, avoid excessive rotation angle of the second arc-shaped support plate 45 causing scratches or indentations on the surface of the electrode foil, and protect the original structure of the electrode foil; at the same time, the deformation of the rubber sheet 48 can eliminate the gap between the electrode foil and the second arc-shaped support plate 45, improve the fit of non-planar force simulation, and further ensure the detection accuracy.

[0038] Please see Figures 2-3 and Figure 5 The second drive mechanism 46 includes a first motor 461, a first screw 462, a first threaded sleeve 465, and a plurality of sliding shafts 463. The first motor 461 is mounted on the first mounting base 42, the first screw 462 is coaxially connected to the output end of the first motor 461, the plurality of sliding shafts 463 are fixedly mounted on the first mounting base 42, the plurality of sliding shafts 463 are slidably connected to the same mounting plate 464 along their length direction, the first threaded sleeve 465 is fixed between the mounting plate 464 and the first arc-shaped support plate 44, and the first screw 462 is threadedly inserted into the first threaded sleeve 465.

[0039] It should be noted that by activating the first motor 461, the output of the first motor 461 drives the first screw 462 to rotate. The first screw 462 drives the first threaded sleeve 465 to move through the threaded engagement. This causes the first threaded sleeve 465 to drive the mounting plate 464 to slide smoothly along multiple sliding shafts 463. The mounting plate 464 simultaneously drives the first arc-shaped support plate 44 to move, adjusting the position of the first arc-shaped support plate 44 to adapt to different bending radius requirements. The transmission of the first screw 462 driven by the first motor 461 is smooth and has high transmission accuracy, which can accurately control the displacement of the first arc-shaped support plate 44. The multiple sliding shafts 463 restrict the rotation of the mounting plate 464, ensuring that the first arc-shaped support plate 44 always maintains the preset posture and avoids movement and tilting. This structure can flexibly adjust the bending radius to adapt to the detection of electrode foils of capacitors of different specifications, improving the versatility of the equipment.

[0040] Please see Figures 2-4 The fine-tuning mechanism 47 includes a bidirectional screw 471, a worm gear 472, a worm 473, a pair of second threaded sleeves 474, and a rotating rod 475. The bidirectional screw 471 is rotatably connected to the mounting plate 464 around its axis. The worm gear 472 is coaxially fixed to the bidirectional screw 471. The worm 473 is rotatably connected to the mounting plate 464 around its axis, and the worm 473 meshes with the worm gear 472. The pair of second threaded sleeves 474 are threaded onto both ends of the bidirectional screw 471. The rotating rod 475 is hinged between the second threaded sleeves 474 and the second arc-shaped support plate 45. An angle sensor is provided at the rotatable connection position between the first arc-shaped support plate 44 and the second arc-shaped support plate 45. A displacement sensor is provided between the mounting plate 464 and the first mounting base 42. It is understood that the angle sensor and the displacement sensor are existing technologies and are not shown in the figure, so they will not be described in detail.

[0041] It should be noted that when the drive component of the fine-tuning mechanism 47 is activated, the worm gear 473 rotates, which in turn drives the meshing worm wheel 472 to rotate. The worm wheel 472 then drives the bidirectional screw 471 to rotate synchronously. The bidirectional screw 471 drives a pair of second threaded sleeves 474 to move closer or further apart through their reverse threads at both ends. The second threaded sleeves 474 push the second arc-shaped support plate 45 to rotate around the hinge point with the first arc-shaped support plate 44 via the rotating rod 475. During this process, the angle sensor at the hinge point between the first arc-shaped support plate 44 and the second arc-shaped support plate 45 detects the rotation angle in real time, and the displacement sensor between the mounting plate 464 and the first mounting base 42 detects the movement distance of the mounting plate 464 in real time to ensure adjustment accuracy.

[0042] The worm gear 472 and worm 473 work together to provide a self-locking function, which ensures that the second arc-shaped support plate 45 remains stable after adjustment, preventing external forces from causing angle deviation. The bidirectional screw 471 and the second threaded sleeve 474 work together to achieve synchronous reverse adjustment of the second arc-shaped support plate 45, which is highly efficient and symmetrical. The angle sensor and displacement sensor form a closed-loop control to accurately control the bending angle and displacement, further improving the accuracy of non-planar force simulation and ensuring the accuracy of the detection data.

[0043] Please see Figures 1-2 and Figure 6 The movable clamping mechanism 21 and the fixed clamping mechanism 22 have the same structure. Taking the movable clamping mechanism 21 as an example, the movable clamping mechanism 21 includes a second mounting base 211, a third mounting base 212, a clamping plate 214, an anti-slip and wear-resistant pad 215, and a third driving mechanism 216. The second mounting base 211 is slidably connected to the slide groove 23. A rotating shaft is provided on the second mounting base 211. The third mounting base 212 is rotatably connected to the second mounting base 211 through the rotating shaft. A clamping cavity is provided on the third mounting base 212. The clamping plate 214 is slidably connected to the clamping cavity through the guide rail 213. An anti-slip and wear-resistant pad 215 is provided at the bottom of the clamping plate 214. The third driving mechanism 216 is installed on the third mounting base 212. The output end of the third driving mechanism 216 is connected to the clamping plate 214.

[0044] It should be noted that during use, the end of the electrode foil is placed into the clamping cavity of the movable clamping mechanism 21, and the third drive mechanism 216 is activated. The third drive mechanism 216 drives the clamping plate 214 to move downward along the guide rail 213, and the electrode foil is pressed into the clamping cavity by the anti-slip and wear-resistant pad 215 at the bottom of the clamping plate 214. At the same time, the fixed clamping mechanism 22 completes the clamping of the other end of the electrode foil in the same way. Then, the first drive mechanism 3 is activated to drive the third mounting seat 212 of the movable clamping mechanism 21 to move along the slide groove 23 and apply a pulling force to the electrode foil. During this process, the third mounting seat 212 can rotate around the rotating shaft on the second mounting seat 211 to adapt to the change of the force direction of the electrode foil.

[0045] The movable clamping mechanism 21 moves smoothly along the slide groove 23 to ensure uniform application of tension; the rotation of the third mounting base 212 around the pivot axis can adapt to the change in direction when the electrode foil is subjected to non-planar force, avoiding excessive force on one side of the electrode foil due to tension deviation; the clamping plate 214 slides smoothly along the guide rail 213, and the anti-slip and wear-resistant pad 215 increases the friction with the electrode foil, improving the clamping stability of small-sized electrode foil, avoiding clamping deviation, and ensuring the stability of the detection process.

[0046] Please see Figure 6 and Figure 8The movable clamping mechanism 21 also includes an elastic pad 217 and a pressure sensor 218; the pressure sensor 218 is provided in the third mounting base 212, the elastic pad 217 is provided on the top of the pressure sensor 218 and is provided in the clamping cavity, and the end of the electrode foil is clamped between the anti-slip and wear-resistant liner 215 and the elastic pad 217.

[0047] It should be noted that when clamping the electrode foil, the end is placed above the elastic pad 217. The clamping plate 214 moves downward and presses the electrode foil onto the elastic pad 217 through the anti-slip and wear-resistant liner 215. At this time, the pressure sensor 218 in the third mounting base 212 detects the pressure on the elastic pad 217 in real time and provides feedback on the clamping force. The pressure sensor 218 can monitor the clamping force in real time, which facilitates precise control of the clamping force and avoids damage to the electrode foil due to excessive clamping force or slippage due to insufficient clamping force. The elastic pad 217 has a buffering effect, which makes the clamping force evenly distributed in the electrode foil clamping area. It can also increase the clamping area with the electrode foil through deformation, which can adapt to the clamping requirements of small-sized electrode foils. At the same time, it can compensate for the small size deviation of the electrode foil, further improving the clamping stability of the movable clamping mechanism 21 and the fixed clamping mechanism 22 and enhancing the controllability of detection.

[0048] Please see Figures 8-10 The third drive mechanism 216 includes a telescopic airbag 2161, a piston 2168, a drive member 2169, and multiple rings 2162. The telescopic airbag 2161 is disposed in the clamping cavity, and the bottom of the telescopic airbag 2161 abuts against the clamping plate 214. The multiple rings 2162 are spaced apart within the telescopic airbag 2161. An air chamber 2167 is provided in the third mounting base 212, and the air chamber 2167 communicates with the telescopic airbag 2161. The piston 2168 is slidably connected to the air chamber 2167. The drive member 2169 is mounted on the third mounting base 212. The output end of the drive member 2169 is connected to the piston 2168 and is used to drive the piston 2168 to move in order to adjust the air pressure inside the telescopic airbag 2161.

[0049] It should be noted that during use, the drive unit 2169 is activated, which drives the piston 2168 to slide within the air chamber 2167 of the third mounting base 212, adjusting the air pressure within the air chamber 2167. The air pressure is transmitted to the telescopic airbag 2161 through the air passage, causing the telescopic airbag 2161 to expand or contract. The telescopic airbag 2161 pushes the clamping plate 214 to move along the guide rail 213, thereby clamping or releasing the electrode foil. When the telescopic airbag 2161 expands or contracts, the multiple rings 2162 within the telescopic airbag 2161 maintain the stable shape of the telescopic airbag 2161.

[0050] The telescopic airbag 2161 drives the uniform transmission of clamping force, avoiding local pressure concentration and protecting the surface of small-sized electrode foil; the ring 2162 prevents the telescopic airbag 2161 from being over-deformed, ensuring clamping accuracy, thereby improving the adaptive capability of the third drive mechanism 216 and ensuring the uniformity and stability of clamping force.

[0051] Please see Figures 9-10 The third drive mechanism 216 also includes a base plate 2163, a ball joint 2164, a shaft 2165, and a sliding sleeve 2166. The base plate 2163 is located at the bottom of the telescopic airbag 2161, the ball joint 2164 is located on the base plate 2163, the sliding sleeve 2166 is coaxially fixed to the piston 2168, the shaft 2165 is located between the ball joint 2164 and the sliding sleeve 2166, and one end of the shaft 2165 is coaxially inserted into the sliding sleeve 2166. The sliding sleeve 2166 has an air hole so that the interior of the sliding sleeve 2166 communicates with the telescopic airbag 2161.

[0052] It should be noted that the bottom plate 2163 of the telescopic airbag 2161 changes with the posture of the telescopic airbag 2161, the ball joint 2164 on the bottom plate 2163 adapts to the angle adjustment, the insertion shaft 2165 moves and rotates slightly in the sliding sleeve 2166, and at the same time the air hole on the sliding sleeve 2166 remains in communication with the air pressure of the telescopic airbag 2161; when the telescopic airbag 2161 extends or retracts, the insertion shaft 2165 cooperates with the sliding sleeve 2166 to prevent the telescopic airbag 2161 from shifting, ensuring the clamping stability of the telescopic airbag 2161, and the air hole of the sliding sleeve 2166 ensures smooth air pressure transmission, making the expansion and contraction of the telescopic airbag 2161 stable, further improving the uniformity of clamping force, and ensuring the clamping stability of the movable clamping mechanism 21.

[0053] Example 2: The technical solution in this example differs from that in Example 1 in that: Please refer to... Figures 6-7 The movable clamping mechanism 21 also includes a limiting mechanism 219, which includes a third screw 2194, a pair of slide rails 2191, and a connecting shaft 2192. The pair of connecting shafts 2192 are slidably connected to the third mounting base 212 along their length direction. The slide rails 2191 are fixed to one end of the connecting shafts 2192, and the clamping plate 214 is slidably connected to the slide rails 2191. The other end of the pair of connecting shafts 2192 is fixed with the same second connecting rod 2193. The third screw 2194 is threaded into the second connecting rod 2193, and one end of the third screw 2194 is rotatably connected to the third mounting base 212 around its axis.

[0054] It should be noted that after the clamping plate 214 has finished clamping the electrode foil, the third screw 2194 is rotated, causing the third screw 2194 to drive the second connecting rod 2193 to move through the threaded engagement. The second connecting rod 2193 drives a pair of connecting shafts 2192 to move synchronously. The connecting shafts 2192 drive the slide rail 2191 to adjust its position, so that the slide rail 2191 and the guide rail 213 cooperate to clamp the clamping plate 214, thereby preventing the clamping plate 214 from shifting as the electrode foil is subjected to changes in tension, thus improving the detection accuracy.

[0055] Please see Figures 1-2 and Figure 6 It is understood that this application does not limit the specific structure and installation method of the first drive mechanism 3. The following only provides a feasible technical solution: The first drive mechanism 3 includes a second motor 31 and a second screw 32; the second motor 31 is mounted on the base 1, the second screw 32 is rotatably connected to the base 1 around its axis, and the output end of the second motor 31 is coaxially connected to the second screw 32; the second screw 32 is threaded into the third mounting base 212, and the axis of the second screw 32 is parallel to the length direction of the slide groove 23.

[0056] It should be noted that during use, the second motor 31 is started, and the output end of the second motor 31 drives the second screw 32 to rotate. The second screw 32 drives the third mounting base 212 of the movable clamping mechanism 21 to move along the slide groove 23 towards or away from the fixed clamping mechanism 22 through threaded engagement, thereby applying or releasing the tension on the electrode foil. The transmission of the second screw 32 driven by the second motor 31 is highly accurate and stable, and can precisely control the moving speed and displacement of the movable clamping mechanism 21, ensuring uniform and controllable tension application. This structure has stable long-term operating accuracy, avoiding detection errors caused by tension fluctuations. Combined with the movable clamping mechanism 21 and the force simulation mechanism 4, it further improves the overall detection accuracy and repeatability, providing accurate mechanical data for the design of long-life capacitors.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tensile testing device for long-life capacitor electrode foil for AI servers, comprising a positioning fixture (2) mounted on a base (1), characterized in that: The positioning fixture (2) includes a movable clamping mechanism (21) and a fixed clamping mechanism (22); a force simulation mechanism (4) is provided between the movable clamping mechanism (21) and the fixed clamping mechanism (22); the force simulation mechanism (4) includes: The first mounting base (42) is fixedly provided with a slide (41) on the base (1). The first mounting base (42) is slidably connected to the slide (41). The sliding direction of the first mounting base (42) is perpendicular to the direction of the tension force on the electrode foil. Two pairs of first connecting rods (43), one pair of first connecting rods (43) is hinged between the movable clamping mechanism (21) and the first mounting base (42), and the other pair of first connecting rods (43) is hinged between the fixed clamping mechanism (22) and the first mounting base (42); The first arc-shaped support plate (44) is disposed on the first mounting base (42); And a second drive mechanism (46), which is disposed between the first mounting base (42) and the first arc-shaped support plate (44) and is used to drive the first arc-shaped support plate (44) to move along the sliding direction of the first mounting base (42).

2. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 1, characterized in that: The force simulation mechanism (4) further includes a fine-tuning mechanism (47) and a pair of second arc-shaped support plates (45); the pair of second arc-shaped support plates (45) are respectively hinged to both ends of the first arc-shaped support plate (44); a rubber sheet (48) is provided on the second arc-shaped support plate (45), and the rubber sheet (48) is provided on the contact surface between the second arc-shaped support plate (45) and the electrode foil; the fine-tuning mechanism (47) is provided on the second drive mechanism (46) and is used to fine-tune the rotation angle between the first arc-shaped support plate (44) and the second arc-shaped support plate (45).

3. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 2, characterized in that: The second drive mechanism (46) includes a first motor (461), a first screw (462), a first threaded sleeve (465), and a plurality of sliding shafts (463); the first motor (461) is mounted on a first mounting base (42), the first screw (462) is coaxially connected to the output end of the first motor (461), the plurality of sliding shafts (463) are fixedly mounted on the first mounting base (42), the plurality of sliding shafts (463) are slidably connected to the same mounting plate (464) along their length direction, the first threaded sleeve (465) is fixed between the mounting plate (464) and the first arc-shaped support plate (44), and the first screw (462) is threadedly inserted into the first threaded sleeve (465).

4. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 3, characterized in that: The fine-tuning mechanism (47) includes a bidirectional screw (471), a worm gear (472), a worm (473), a pair of second threaded sleeves (474), and a rotating rod (475); the bidirectional screw (471) is rotatably connected to the mounting plate (464) about its axis, the worm gear (472) is coaxially fixed to the bidirectional screw (471), the worm (473) is rotatably connected to the mounting plate (464) about its axis, and the worm (473) meshes with the worm gear (472), the pair of second threaded sleeves (474) are respectively threaded onto both ends of the bidirectional screw (471), and the rotating rod (475) is hinged between the second threaded sleeves (474) and the second arc-shaped support plate (45); An angle sensor is provided at the rotational connection position between the first arc-shaped support plate (44) and the second arc-shaped support plate (45); a displacement sensor is provided between the mounting plate (464) and the first mounting base (42).

5. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 1, characterized in that: The base (1) is provided with a sliding groove (23), the movable clamping mechanism (21) is slidably connected to the sliding groove (23), the fixed clamping mechanism (22) is fixedly mounted on the base (1), and the two ends of the electrode foil are respectively clamped to the movable clamping mechanism (21) and the fixed clamping mechanism (22); the base (1) is equipped with a first driving mechanism (3) and is used to drive the movable clamping mechanism (21) to move; The movable clamping mechanism (21) and the fixed clamping mechanism (22) have the same structure. Taking the movable clamping mechanism (21) as an example, the movable clamping mechanism (21) includes a second mounting base (211), a third mounting base (212), a clamping plate (214), an anti-slip and wear-resistant pad (215), and a third driving mechanism (216). The second mounting base (211) is slidably connected to the slide groove (23). A rotating shaft is provided on the second mounting base (211). The third mounting base (212) is rotatably connected to the second mounting base (211) through the rotating shaft. A clamping cavity is opened on the third mounting base (212). The clamping plate (214) is slidably connected to the clamping cavity through the guide rail (213). An anti-slip and wear-resistant pad (215) is provided at the bottom of the clamping plate (214). The third driving mechanism (216) is installed on the third mounting base (212). The output end of the third driving mechanism (216) is connected to the clamping plate (214).

6. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 5, characterized in that: The movable clamping mechanism (21) also includes an elastic pad (217) and a pressure sensor (218); the pressure sensor (218) is provided in the third mounting base (212), the elastic pad (217) is provided on the top of the pressure sensor (218), and the elastic pad (217) is provided in the clamping cavity, and the end of the electrode foil is clamped between the anti-slip wear-resistant liner (215) and the elastic pad (217).

7. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 5, characterized in that: The third driving mechanism (216) includes a telescopic airbag (2161), a piston (2168), a driving member (2169), and multiple rings (2162). The telescopic airbag (2161) is disposed in the clamping cavity, and the bottom of the telescopic airbag (2161) abuts against the clamping plate (214). The multiple rings (2162) are spaced apart within the telescopic airbag (2161). An air chamber (2167) is provided in the third mounting base (212), and the air chamber (2167) is connected to the telescopic airbag (2161). The piston (2168) is slidably connected to the air chamber (2167). The driving member (2169) is mounted on the third mounting base (212). The output end of the driving member (2169) is connected to the piston (2168) and is used to drive the piston (2168) to move in order to adjust the air pressure inside the telescopic airbag (2161).

8. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 7, characterized in that: The third drive mechanism (216) further includes a base plate (2163), a ball joint (2164), a shaft (2165), and a sliding sleeve (2166); the base plate (2163) is disposed at the bottom of the telescopic airbag (2161), the ball joint (2164) is disposed on the base plate (2163), the sliding sleeve (2166) is coaxially fixed to the piston (2168), the shaft (2165) is disposed between the ball joint (2164) and the sliding sleeve (2166), and one end of the shaft (2165) is coaxially inserted into the sliding sleeve (2166); the sliding sleeve (2166) is provided with an air hole so that the interior of the sliding sleeve (2166) communicates with the telescopic airbag (2161).

9. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 5, characterized in that: The movable clamping mechanism (21) further includes a limiting mechanism (219), which includes a third screw (2194), a pair of slide rails (2191), and a connecting shaft (2192). The pair of connecting shafts (2192) are slidably connected to the third mounting base (212) along their length direction. The slide rails (2191) are fixed to one end of the connecting shafts (2192), and the clamping plate (214) is slidably connected to the slide rails (2191). The other end of the pair of connecting shafts (2192) is fixed with the same second connecting rod (2193). The third screw (2194) is threaded into the second connecting rod (2193), and one end of the third screw (2194) is rotatably connected to the third mounting base (212) around its axis.

10. The tensile testing device for long-life capacitor electrode foil for AI servers according to claim 5, characterized in that: The first drive mechanism (3) includes a second motor (31) and a second screw (32); the second motor (31) is mounted on the base (1), the second screw (32) is rotatably connected to the base (1) around its axis, and the output end of the second motor (31) is coaxially connected to the second screw (32); the second screw (32) is threaded into the third mounting base (212), and the axis of the second screw (32) is parallel to the length direction of the slide groove (23).

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