An electrolytic capacitor burn-in test fixture

Abstract

The utility model relates to the field of electrolytic capacitor aging test, especially a kind of electrolytic capacitor aging test fixture. Including aging test box, the inner wall of aging test box is equipped with heating device, the side of aging test box is equipped with control switch, the side of aging test box is equipped with box door, the inner wall of aging test box is equipped with adjusting structure, the adjusting structure includes fixed frame, the fixed frame is fixedly connected with aging test box, the inner wall of fixed frame is fixedly connected with several fixed plates, the upper surface of fixed frame inner wall is rotatably connected with gear, the both sides of fixed frame are slidably connected with rack. The utility model provides a kind of electrolytic capacitor aging test fixture, multiple capacitors can be fixed and limited conveniently and quickly, to ensure that capacitor maintains stable posture in the testing process, avoid affecting test result due to moving or vibration, ensure the accuracy of test data.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic capacitor aging testing, and in particular to an electrolytic capacitor aging testing fixture. Background Technology

[0002] Traditionally, the lifespan of electrolytic capacitors is assessed through accelerated aging tests. These tests typically use an aging test chamber to simulate the high-temperature conditions that capacitors might encounter in real-world operating environments. Inside the chamber, heating and humidity control cause the electrolytic capacitors to undergo an aging process similar to several years of use within a short period. The testing process includes monitoring changes in the capacitor's performance at high temperatures, particularly changes in parameters such as capacitance, ESR, and leakage current. These tests can predict the lifespan of electrolytic capacitors under different environments, helping developers select capacitors and design applications, ensuring the quality and reliability of the final product.

[0003] Existing technologies, such as the utility model patent with publication number CN212275858U, disclose an aging test fixture for aluminum electrolytic capacitors. This patent includes a mounting base, a sliding member, and two clamping plates. The bottom of the clamping plates is mounted on a track, and one end of each clamping plate rests against the mounting base. A slider is mounted on the mounting base, and corresponding grooves matching the slider are provided on the clamping plates. A stop block is provided at the free end of each clamping plate, and a top plate is provided on the top of one side of the clamping plate near the stop block. Wedge-shaped blocks are provided on the inner side of each clamping plate, and the wedge-shaped blocks in the two clamping plates are arranged in a V-shape. An arc-shaped block is provided on the sliding rod, and the arc-shaped block and the wedge-shaped block are on the same horizontal plane. A limit component is provided on the clamping plate, and a spring is provided between the limit component and the pressing part. In this utility model, due to the top plate, a certain degree of isolation is provided in the event of an explosion of a defective product. Thus, most of the electrolyte and core of the defective product are intercepted between the two clamping plates and the top plate during the explosion, preventing any impact on the appearance of other capacitors or the normal conduct of aging tests for other capacitors.

[0004] When using an aging test chamber to perform aging tests on capacitors, the capacitors are usually placed directly inside the test chamber for testing. However, since there are a large number of capacitors involved in the test, and the capacitors are easily affected by thermal expansion and vibration in a high-temperature environment, this can easily cause the capacitors to shift in position, resulting in unstable and biased test data, which in turn affects the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electrolytic capacitor aging test fixture.

[0006] To solve the above technical problems, this utility model provides an electrolytic capacitor aging test fixture, comprising: an aging test chamber, a heating device installed on the inner wall of the aging test chamber, a control switch installed on one side of the aging test chamber, a door installed on one side of the aging test chamber, an adjustment structure provided on the inner wall of the aging test chamber, the adjustment structure including a fixed frame, the fixed frame being fixedly connected to the aging test chamber, a plurality of fixed plates being fixedly connected to the inner wall of the fixed frame, a gear being rotatably connected to the upper surface of the inner wall of the fixed frame, and sliding surfaces on both sides of the fixed frame. A rack is dynamically connected, and the rack meshes with a gear. An auxiliary plate is fixedly connected to one side of the rack. Limiting plates are slidably connected to both sides of the fixed frame. The limiting plates and auxiliary plates are fixedly connected. A sliding groove is formed on the upper surface of the fixed plate. A positioning plate is slidably connected to the inner wall of the sliding groove. Several connecting plates are fixedly connected to one side of the positioning plate. Several semi-circular frames are fixedly connected to one side of the connecting plate. Several springs are fixedly connected to one side of the auxiliary plate. The other side of the springs is fixedly connected to the fixed frame. The positioning plate and the rack are fixedly connected.

[0007] The effect achieved by the above components is that by setting the adjustment structure, multiple capacitors can be easily and quickly fixed and limited, thereby ensuring that the capacitors maintain a stable posture during the test, avoiding the impact of movement or vibration on the test results, and ensuring the accuracy of the test data.

[0008] Preferably, a soft pad, which is a rubber pad, is fixedly connected to the inner wall of the semi-circular frame.

[0009] The effect achieved by the above components is that the soft pad can prevent the semi-circular frame from directly contacting the capacitor, thus preventing wear and tear on the capacitor.

[0010] Preferably, a limiting rod is fixedly connected to the inner wall of the chute, and the limiting rod and the positioning plate are slidably connected.

[0011] The effect achieved by the above components is that the limiting rod can limit the positioning plate and prevent the positioning plate from shifting during movement.

[0012] Preferably, the arc surface of the spring is fitted with a bellows, and the two ends of the bellows are fixedly connected to the auxiliary plate and the fixed frame, respectively.

[0013] The effect achieved by the above components is that the bellows can protect the spring and prevent foreign objects from getting stuck in the spring and affecting its use.

[0014] Preferably, a plurality of telescopic rods are fixedly connected to one side of the auxiliary plate, and the other end of the plurality of telescopic rods is fixedly connected to the fixed frame.

[0015] The effect achieved by the above components is that the telescopic rod can support the spring and prevent the spring from shifting its position during use.

[0016] Preferably, the auxiliary plate has anti-slip textures on both sides, and the anti-slip textures are evenly distributed on both sides of the auxiliary plate.

[0017] The effect achieved by the above components is that the anti-slip texture can increase the friction of the auxiliary plate, preventing the hands from slipping when the auxiliary plate is moved.

[0018] Compared with related technologies, the electrolytic capacitor aging test fixture provided by this utility model has the following beneficial effects:

[0019] By setting up an adjustment structure, multiple capacitors can be fixed and limited efficiently and conveniently, thereby ensuring that the capacitors maintain a stable position during the test, avoiding deviations in test results due to displacement or vibration, and thus ensuring the accuracy of test data. Attached Figure Description

[0020] Figure 1 This utility model provides a structural schematic diagram of an electrolytic capacitor aging test fixture.

[0021] Figure 2 for Figure 1 The diagram shows the structural schematic of the adjustment structure.

[0022] Figure 3 for Figure 2 A partial structural schematic diagram of the adjustment structure shown;

[0023] Figure 4 for Figure 3 The enlarged schematic diagram at point A is shown below;

[0024] Figure 5 for Figure 2 A partial structural diagram of the adjustment structure is shown.

[0025] The following are the labels in the diagram: 1. Aging test chamber; 2. Heating device; 3. Control switch; 4. Chamber door; 5. Adjustment structure; 501. Fixing frame; 502. Fixing plate; 503. Gear; 504. Rack; 505. Auxiliary plate; 506. Limiting plate; 507. Slide groove; 508. Positioning plate; 509. Connecting plate; 510. Semicircular frame; 511. Soft pad; 512. Limiting rod; 513. Corrugated pipe; 514. Anti-slip texture; 515. Spring; 516. Telescopic rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages 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.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 5 The present invention provides an electrolytic capacitor aging test fixture, comprising: an aging test chamber 1, a heating device 2 installed on the inner wall of the aging test chamber 1, a control switch 3 installed on one side of the aging test chamber 1, a door 4 installed on one side of the aging test chamber 1, and an adjustment structure 5 provided on the inner wall of the aging test chamber 1.

[0029] In the embodiments of this utility model, please refer to Figures 2 to 5The adjustment structure 5 includes a fixed frame 501, which is fixedly connected to the aging test chamber 1. Several fixed plates 502 are fixedly connected to the inner wall of the fixed frame 501. A gear 503 is rotatably connected to the upper surface of the inner wall of the fixed frame 501. Racks 504 are slidably connected to both sides of the fixed frame 501, meshing with the gears 503. An auxiliary plate 505 is fixedly connected to one side of the rack 504. Limiting plates 506 are slidably connected to both sides of the fixed frame 501, and are fixedly connected to the auxiliary plates 505. A groove 507 is formed on the upper surface of the fixed plate 502, and the inner wall of the groove 507 slides... A positioning plate 508 is dynamically connected. Several connecting plates 509 are fixedly connected to one side of the positioning plate 508. Several semi-circular frames 510 are fixedly connected to one side of the connecting plates 509. Several springs 515 are fixedly connected to one side of the auxiliary plate 505. The other side of the springs 515 is fixedly connected to the fixed frame 501. The positioning plate 508 and the rack 504 are fixedly connected. By setting the adjustment structure 5, multiple capacitors can be conveniently and quickly fixed and limited, thereby ensuring that the capacitors maintain a stable posture during the test, avoiding the influence of movement or vibration on the test results, and ensuring the accuracy of the test data. The inner part of the semi-circular frame 510... A soft pad 511, made of rubber, is fixedly connected to the wall. The soft pad 511 prevents the semi-circular frame 510 from directly contacting the capacitor, thus avoiding wear on the capacitor. A limit rod 512 is fixedly connected to the inner wall of the slide groove 507. The limit rod 512 is slidably connected to the positioning plate 508, limiting the positioning plate 508 and preventing it from shifting during movement. A bellows 513 is fitted onto the arc surface of the spring 515. Both ends of the bellows 513 are fixedly connected to the auxiliary plate 505 and the fixed frame 501, respectively. The bellows 513 can support the spring 515. 5. To protect the spring 515 from foreign objects getting stuck and affecting its use, several telescopic rods 516 are fixedly connected to one side of the auxiliary plate 505. The other end of the telescopic rods 516 is fixedly connected to the fixed frame 501. The telescopic rods 516 can support the spring 515 and prevent the spring 515 from shifting its position during use. Anti-slip textures 514 are provided on both sides of the auxiliary plate 505. The anti-slip textures 514 are evenly distributed on both sides of the auxiliary plate 505. The anti-slip textures 514 can increase the friction of the auxiliary plate 505 and prevent the hands from slipping when the auxiliary plate 505 is moved.

[0030] The working principle of the electrolytic capacitor aging test fixture provided by this utility model is as follows: By setting the adjustment structure 5, the door 4 of the aging test chamber 1 is first opened. The auxiliary plate 505 is pulled by the anti-slip texture 514, causing the auxiliary plate 505 to stretch the spring 515. Simultaneously, the auxiliary plate 505 also moves the rack 504 inside the fixed frame 501. When the rack 504 moves, it also drives the gear 503 to rotate. At this time, the gear 503 drives another rack 504 to move. When the auxiliary plate 505 moves, it also drives the limiting plate 506 inside the fixed frame 501. When the rack 504 moves, it also drives the positioning plate 508 to move within the groove 507 of the fixed plate 502. Simultaneously, the positioning plate 508 drives the connecting plate 509 to move, which in turn drives the semi-circular frame 510 to move. Then, the capacitor is placed on the fixed plate 502. After multiple capacitors are placed, the auxiliary plate 505 is released. 05. At this time, the spring 515 will drive the auxiliary plate 505 to move until the two semicircular frames 510 clamp and fix the capacitor. Then, close the door 4 and press the control switch 3 to start the heating device 2 in the aging test chamber 1 to simulate heating aging. Among them, the soft pad 511 can prevent the semicircular frame 510 from directly contacting the capacitor and avoid the capacitor from being worn. The limit rod 512 can limit the positioning plate 508 and prevent the positioning plate 508 from shifting during movement. The corrugated tube 513 can protect the spring 515 and prevent the spring 515 from getting stuck and affecting its use. The telescopic rod 516 can support the spring 515 and prevent the spring 515 from shifting its position during use. The anti-slip texture 514 can increase the friction of the auxiliary plate 505 and prevent the personnel from slipping when moving the auxiliary plate 505.

[0031] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixture for testing the aging of electrolytic capacitors, characterized in that, include: An aging test chamber (1) is provided with a heating device (2) installed on its inner wall. A control switch (3) is installed on one side of the aging test chamber (1). A door (4) is installed on one side of the aging test chamber (1). An adjustment structure (5) is provided on the inner wall of the aging test chamber (1). The adjustment structure (5) includes a fixed frame (501). The fixed frame (501) is fixedly connected to the aging test chamber (1). Several fixed plates (502) are fixedly connected to the inner wall of the fixed frame (501). A gear (503) is rotatably connected to the upper surface of the inner wall of the fixed frame (501). A rack (504) is slidably connected to both sides of the fixed frame (501). The rack (504) and the gear (503) mesh with each other. 4) An auxiliary plate (505) is fixedly connected to one side of the fixed frame (501). Limiting plates (506) are slidably connected to both sides of the fixed frame (501). The limiting plates (506) and the auxiliary plate (505) are fixedly connected. A sliding groove (507) is provided on the upper surface of the fixed plate (502). A positioning plate (508) is slidably connected to the inner wall of the sliding groove (507). Several connecting plates (509) are fixedly connected to one side of the positioning plate (508). Several semi-circular frames (510) are fixedly connected to one side of the connecting plate (509). Several springs (515) are fixedly connected to one side of the auxiliary plate (505). The other side of the springs (515) is fixedly connected to the fixed frame (501). The positioning plate (508) and the rack (504) are fixedly connected.

2. The electrolytic capacitor aging test fixture according to claim 1, characterized in that, A soft pad (511) is fixedly connected to the inner wall of the semi-circular frame (510), and the soft pad (511) is a rubber pad.

3. The electrolytic capacitor aging test fixture according to claim 1, characterized in that, The inner wall of the slide (507) is fixedly connected to a limiting rod (512), and the limiting rod (512) and the positioning plate (508) are slidably connected.

4. The electrolytic capacitor aging test fixture according to claim 1, characterized in that, The spring (515) has a bellows (513) sleeved on its arc surface, and the two ends of the bellows (513) are fixedly connected to the auxiliary plate (505) and the fixed frame (501) respectively.

5. The electrolytic capacitor aging test fixture according to claim 1, characterized in that, A plurality of telescopic rods (516) are fixedly connected to one side of the auxiliary plate (505), and the other end of the plurality of telescopic rods (516) is fixedly connected to the fixed frame (501).

6. The electrolytic capacitor aging test fixture according to claim 1, characterized in that, The auxiliary plate (505) has anti-slip textures (514) on both sides, and the anti-slip textures (514) are evenly distributed on both sides of the auxiliary plate (505).

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