Jig for durability test of capacitor

Abstract

The utility model discloses a jig for a durability test of a capacitor. The jig comprises a jig base, a fixed die and a movable die, the fixed die and the movable die are both arranged on the upper surface of the jig base, the side face of the fixed die is of a concave structure, the side face of the movable die is of a convex structure, the contact face of the fixed die and the contact face of the movable die are matched and matched with each other, and the fixed die and the movable die are used for clamping a leading-out terminal of a capacitor; the opening and closing of the movable die and the fixed die can be adjusted through the arranged fixed guide structure, the time for installing the aluminum electrolytic capacitor is shortened, the test efficiency is greatly improved, and different test requirements of the aluminum electrolytic capacitor are met; and through arrangement of the springs, perfect contact installation of the leading-out terminals on the two sides and the conductive blocks is facilitated, the clamping stability of the lead terminals is improved, and the installation time of the aluminum electrolytic capacitor is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor jigs, in particular to a jig for capacitor durability testing. Background Art

[0002] The traditional design of an aluminum electrolytic capacitor typically consists of a negative electrode foil, a positive electrode foil, and an electrolyte between the two electrodes. This structural design has been widely used in various electrical devices. Patent No. CN213673808U discloses a fixture for aluminum electrolytic capacitor durability testing. The movable right fixture's back-and-forth opening and closing movement significantly shortens the installation time of aluminum electrolytic capacitors and greatly improves testing efficiency. However, the spring installed at the lead terminal may lead to unstable clamping.

[0003] Specifically, existing jigs for durability testing of aluminum electrolytic capacitors lack sufficient stability and adjustability for the capacitor's lead terminals, making it difficult to adapt to capacitors of different types and sizes. Therefore, a new type of jig for capacitor durability testing is urgently needed to solve the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a jig for capacitor durability testing to solve the above-mentioned problems.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A jig for capacitor durability testing comprises: a jig base, a fixed die, and a movable die; the fixed die and the movable die are both arranged on the upper surface of the jig base, the side surface of the fixed die is a concave structure, and the side surface of the movable die is a convex structure, the contact surfaces of the fixed die and the movable die are adapted to match each other, and the fixed die and the movable die are used to clamp the lead terminals of the capacitor.

[0007] The first negative conductive block and the first positive conductive block are embedded in the contact sides of the fixed mold and the movable mold, and the second negative conductive block and the second positive conductive block are embedded in the contact sides of the movable mold and the fixed mold.

[0008] The first negative conductive block corresponds to the second negative conductive block to clamp the negative terminal of the capacitor, and the first positive conductive block corresponds to the second positive conductive block to clamp the positive terminal of the capacitor.

[0009] When in use, turn the capacitor upside down so that the two lead terminals of the capacitor are placed between the fixed mold and the movable mold, and preliminarily determine the capacitor test clamping position.

[0010] A cylinder is placed on one side of the fixture base, and the output end of the cylinder is keyed to a movable rod, which is in turn keyed to a plurality of mutually matching movable molds and fixed molds, and the movable rod drives the movable mold to move axially along the movable rod.

[0011] The fixed mold is fixedly connected to the fixture base.

[0012] A spring is fixed on the middle contact side of the movable mold and the fixed mold. The elastic end of the spring is inherently provided with a limiting block, and the limiting block is consistent with the contact surface of the fixed mold.

[0013] The bottom of the jig base is connected to a terminal block, and the bottom of the jig base is fixed with evenly arranged conductive sheets. The terminal blocks are connected to each other through the conductive sheets to form an equivalent voltage divider circuit. The terminal blocks are connected in parallel to a bus bundle, and the bus bundle is connected to the output end of the power connector.

[0014] The starting cylinder moves the movable rod to a position where the capacitor's lead terminals are securely clamped, completing the test installation. The wiring terminals are connected to the conductive sheet, and the busbars of the wiring terminals at the bottom of the fixture base are connected to the power connector. After power is applied, the entire test fixture is placed in a high-temperature test chamber for durability testing.

[0015] The fixture base is a metal plate.

[0016] The fixed mold and the movable mold are made of insulating materials.

[0017] A groove for limiting the movement of the cylinder is provided on one side of the fixture base.

[0018] The bottom of the aluminum electrolytic capacitor faces upward, simulating the actual installation method of the aluminum electrolytic capacitor in the complete machine. At the same time, it is easier to observe abnormal conditions during the durability test monitoring of the aluminum electrolytic capacitor.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model can adjust the opening and closing of the movable mold and the fixed mold through the fixed guide structure, shortening the time for installing aluminum electrolytic capacitors, greatly improving the test efficiency, and meeting the needs of different tests on aluminum electrolytic capacitors; through the spring installed between the movable mold and the fixed mold, it can provide a certain pressure while fixing the capacitor terminals, ensuring stable contact between the capacitor and the conductive block, and avoiding test errors caused by poor contact in extreme environments such as high temperature.

[0021] 2. The base of the fixture of the utility model is a metal plate to ensure that it does not deform in a long-term high-temperature environment; the fixed mold and the movable mold are made of insulating materials, which have good high-temperature resistance and can ensure the normal progress of the durability test process of the capacitor. The overall clamping structure enables the lead terminal to be installed in perfect contact with the conductive block, improves its clamping stability for the lead terminal, reduces the installation time of the aluminum electrolytic capacitor, and ensures the consistency and stability of current transmission during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a structural sectional view of the utility model;

[0025] Figure 3 It is an exploded schematic diagram of the fixed mold and the movable mold of the utility model;

[0026] Figure 4 This is a schematic diagram of the position structure of the limit block of the utility model;

[0027] Figure 5 This is a schematic structural diagram of the conductive sheet of the utility model;

[0028] In the figure: 1. fixture base; 12. groove; 2. movable rod; 3. fixed mold; 31. first negative conductive block; 32. first positive conductive block; 4. movable mold; 41. second negative conductive block; 42. second positive conductive block; 5. limit block; 6. spring; 7. cylinder; 8. conductive sheet; 9. bus harness; 10. power connector. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 and Figure 2As shown, a jig for capacitor durability testing includes: a jig base 1, a fixed mold 3 and a movable mold 4; the fixed mold 3 and the movable mold 4 are both arranged on the upper surface of the jig base 1, the side surface of the fixed mold 3 is a concave structure, and the side surface of the movable mold 4 is a convex structure. The contact surfaces of the fixed mold 3 and the movable mold 4 are adapted to match each other, and the fixed mold 3 and the movable mold 4 are used to clamp the lead terminals of the capacitor.

[0031] See also Figure 3 and Figure 4 As shown, the first negative conductive block 31 and the first positive conductive block 32 are embedded in the contact sides of the fixed mold 3 and the movable mold 4 , and the second negative conductive block 41 and the second positive conductive block 42 are embedded in the contact sides of the movable mold 4 and the fixed mold 3 .

[0032] The first negative conductive block 31 corresponds to the second negative conductive block 41 to clamp the negative terminal of the capacitor, and the first positive conductive block 32 corresponds to the second positive conductive block 42 to clamp the positive terminal of the capacitor.

[0033] When in use, turn the capacitor upside down so that the two lead terminals of the capacitor are placed between the fixed mold 3 and the movable mold 4, and preliminarily determine the capacitor test clamping position.

[0034] A cylinder 7 is placed on one side of the fixture base 1. The output end of the cylinder 7 is keyed to a movable rod 2. The movable rod 2 is in turn keyed to several mutually matching movable molds 4 and fixed molds 3. The movable rod 2 drives the movable mold 4 to move axially along the movable rod 2.

[0035] The fixed mold 3 is fixedly connected to the fixture base 1 .

[0036] A spring 6 is fixed on the middle contact side of the movable mold 4 and the fixed mold 3 , and a limit block 5 is inherently provided at the elastic end of the spring 6 , and the limit block 5 is consistent with the contact surface of the fixed mold 3 .

[0037] See also Figure 5 As shown, the bottom of the fixture base 1 is connected to the terminal block, and the bottom of the fixture base 1 is fixed with evenly arranged conductive plates 8. The terminal blocks are connected to each other through the conductive plates 8 to form an equivalent voltage divider circuit. The terminal blocks are connected in parallel to the bus bundle 9, and the bus bundle 9 is connected to the output end of the power connector 10.

[0038] The starter cylinder 7 moves the movable rod 2 to a position where the capacitor's lead terminals are securely clamped, completing the test installation. The wiring terminals are connected to the conductive plate 8, and the bus bar 9 of the wiring terminals at the lower end of the fixture base 1 is connected to the power connector 10. The power is then turned on. After power is applied, the entire test fixture is placed in a high-temperature test chamber for durability testing.

[0039] The fixture base 1 is a metal plate, which ensures that it does not deform in a long-term high-temperature environment; the fixed mold 3 and the movable mold 4 are made of insulating materials, which have good high-temperature resistance and can ensure the normal progress of the capacitor durability test process.

[0040] The fixed mold 3 and the movable mold 4 are made of insulating materials.

[0041] A groove 12 is provided on one side of the fixture base 1 to limit the movement of the cylinder 7, thereby ensuring stable fixation of the capacitor.

[0042] The bottom of the aluminum electrolytic capacitor faces upward, simulating the actual installation method of the aluminum electrolytic capacitor in the complete machine. At the same time, it is easier to observe abnormal conditions during the durability test monitoring of the aluminum electrolytic capacitor.

[0043] The working principle of the utility model is as follows: firstly, the capacitor is turned upside down so that the two lead terminals of the capacitor are placed between the fixed mold 3 and the movable mold 4, and the capacitor test clamping position is preliminarily determined.

[0044] The starting cylinder 7 drives the movable rod 2 to move to the position where the lead terminal of the capacitor is firmly clamped, completing the test installation work.

[0045] Connect the wiring terminals to the conductive sheet 8, the bus bar 9 of the wiring terminals at the lower end of the fixture base 1 and the power connector 10, turn on the power, and after powering on, place the entire test fixture in a high-temperature test chamber for durability testing.

[0046] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A jig for capacitor durability testing, characterized in that: include: A fixture base (1), a fixed die (3) and a movable die (4); the fixed die (3) and the movable die (4) are both arranged on the upper surface of the fixture base (1); the side surface of the fixed die (3) is a concave structure, and the side surface of the movable die (4) is a convex structure; the contact surfaces of the fixed die (3) and the movable die (4) are adapted to fit each other; and the fixed die (3) and the movable die (4) are used to clamp the lead-out terminals of the capacitor.

2. The jig for capacitor durability testing according to claim 1, characterized in that: A first negative electrode conductive block (31) and a first positive electrode conductive block (32) are embedded in the contact sides of the fixed mold (3) and the movable mold (4), and a second negative electrode conductive block (41) and a second positive electrode conductive block (42) are embedded in the contact sides of the movable mold (4) and the fixed mold (3).

3. The jig for capacitor durability testing according to claim 2, characterized in that: The first negative electrode conductive block (31) corresponds to the second negative electrode conductive block (41) to clamp the negative terminal of the capacitor, and the first positive electrode conductive block (32) corresponds to the second positive electrode conductive block (42) to clamp the positive terminal of the capacitor.

4. The jig for capacitor durability testing according to claim 1, characterized in that: A cylinder (7) is placed on one side of the fixture base (1); the output end of the cylinder (7) is keyed to a movable rod (2); the movable rod (2) is keyed in turn to a plurality of mutually matching movable dies (4) and fixed dies (3); the movable rod (2) drives the movable die (4) to move axially along the movable rod (2).

5. The jig for capacitor durability testing according to claim 1, characterized in that: The fixed mold (3) is fixedly connected to the fixture base (1).

6. The jig for capacitor durability testing according to claim 1, characterized in that: A spring (6) is fixed on the middle contact side of the movable mold (4) and the fixed mold (3), and a limit block (5) is inherently provided at the elastic end of the spring (6), and the limit block (5) is consistent with the contact surface of the fixed mold (3).

7. The jig for capacitor durability testing according to claim 1, characterized in that: The bottom of the fixture base (1) is connected to a terminal block, and the bottom of the fixture base (1) is fixed with evenly arranged conductive sheets (8). The terminal blocks are connected to each other through the conductive sheets (8) to form an equivalent voltage divider circuit. The terminal blocks are connected in parallel to a bus bundle (9), and the bus bundle (9) is connected to the output end of the power connector (10).

8. The jig for capacitor durability testing according to claim 1, characterized in that: A groove (12) for limiting the movement of the cylinder (7) is provided on one side of the jig base (1).

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