A test tool for capacitors

Abstract

The utility model provides a kind of test tool for capacitor, belong to the technical field of capacitor test.The tool includes first wire and second wire, first wire is wrapped with first wire sheath outside, one end of first wire is provided with clamping assembly, clamping assembly is used to clamp the capacitor to be measured, the other end is provided with male terminal, second wire is wrapped with second wire sheath outside, one end of second wire is provided with connecting assembly, connecting assembly is used to connect test equipment, the other end is provided with female terminal matched with male terminal.A kind of test tool for capacitor provided in the utility model embodiment can solve the problem of lower safety in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of capacitance testing technology, and in particular to a testing fixture for capacitors. Background Technology

[0002] A capacitor is an energy storage element consisting of two closely spaced conducting plates sandwiching an insulating dielectric. It stores charge through an electric field; during charging, positive and negative charges accumulate on the plates respectively, and during discharging, electrical energy is released. Capacitors are used in circuits for DC blocking, coupling, filtering, and energy storage, and come in various types. Capacitors require testing fixtures to ensure performance and safety. These fixtures simulate the applied voltage and current conditions of the working environment, allowing for the testing of parameters such as capacitance, withstand voltage, and leakage current. This prevents circuit failures caused by inherent capacitor defects. Fixtures also standardize testing procedures, improve testing efficiency, and ensure the reliable operation of capacitors in electronic equipment. Especially when measuring supercapacitors, where internal resistance needs to be measured, a four-electrode measurement method is generally used to minimize errors introduced by the fixture.

[0003] During capacitor testing, there are safety hazards associated with high-voltage testing. If the insulation design of the withstand voltage test fixture is insufficient, breakdown and leakage may occur under high voltage, which not only threatens the safety of operators but also damages the capacitor under test. In existing technologies, a multi-layer insulation wrapping method is used, with the electrode pins protected by insulating materials and an outer layer of metal shielding mesh to prevent surface leakage and improve the insulation performance of the fixture under high-voltage conditions.

[0004] However, in existing testing fixtures, the measuring equipment is usually directly connected to the capacitor via wires. When the capacitor is not discharged, the residual charge will cause a sudden large current surge to the measuring equipment, which may damage the internal components of the equipment or even cause electric shock and fire, resulting in low testing safety. Utility Model Content

[0005] This utility model provides a testing fixture for capacitors, which can solve the problem of low testing safety in the prior art. The technical solution is as follows:

[0006] A capacitor testing fixture includes: a first row of wires and a second row of wires.

[0007] The first ribbon cable is wrapped with a first hub sheath. One end of the first ribbon cable is provided with a clamping component for clamping the capacitor under test, and the other end is provided with a male terminal. The second ribbon cable is wrapped with a second hub sheath. One end of the second ribbon cable is provided with a connecting component for connecting to the test equipment, and the other end is provided with a female terminal that matches the male terminal.

[0008] Optionally, the female terminal is provided with a fixing seat, the fixing seat is provided with a card, the middle part of the card is hinged to the fixing seat, the end of the card near the male terminal is provided with a first hook, and the male terminal is provided with a second hook that matches the first hook.

[0009] Optionally, a spring is provided on the female terminal, and the other end of the spring is connected to the end of the card away from the male terminal.

[0010] Optionally, the male terminal is provided with a pin header on the side near the female terminal, and the female terminal is provided with a pin groove that matches the pin header on the side near the male terminal.

[0011] Optionally, the clamping assembly includes a metal clamp and a rubber sleeve, the metal clamp being connected to the first ribbon cable, and the rubber sleeve being fitted over the handle of the metal clamp.

[0012] Optionally, the connection assembly includes an insulating sheath and a four-hole connector, the four-hole connector being disposed at the end of the second cable for connection to a test device, and the insulating sheath surrounding the outside of the four-hole connector.

[0013] Optionally, a grounding ring is provided on the four-hole connector, and the inner wall of the grounding ring is fixedly connected to the outer wall of the four-hole connector.

[0014] Optionally, the outer wall of the grounding ring is provided with anti-slip texture.

[0015] Optionally, a fuse assembly is provided between the second ribbon cable and the connection assembly. The fuse assembly includes an interface socket, a fuse tube, and a resettable fuse. The second ribbon cable is connected to the interface socket, the interface socket is connected to the resettable fuse, the resettable fuse is connected to the connection assembly, and the fuse tube is disposed around the outside of the resettable fuse.

[0016] Optionally, the fuse tube is provided with a vent hole.

[0017] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0018] This utility model provides a capacitor testing fixture. By adding this fixture between the capacitor under test and the testing equipment, the connection of the test circuit is achieved by inserting a male terminal into a female terminal. The capacitor under test is connected to the testing equipment via a first and a second cable. The first and second cable bundle sleeves can respectively bundle and insulate the first and second cable bundles, thereby facilitating the connection or disconnection of the circuit. This fixture structure is easy to assemble and disassemble. When measuring a capacitor before it is discharged, even if the current of the capacitor under test is too large, the fixture can be quickly disconnected to prevent damage to internal components of the testing equipment, reduce the risk of electric shock and fire, and effectively ensure the safety and reliability of the test. This effectively solves the problem of low testing safety in existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram showing the male and female terminals of this utility model working together in an embodiment;

[0022] Figure 3 This is a schematic diagram showing the engagement and disengagement of the male and female terminals provided in this embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the clamping component structure provided in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the connection component and the safety component provided in an embodiment of the present utility model.

[0025] In the diagram: 1-First cable; 11-First hub sleeve; 2-Second cable; 21-Second hub sleeve; 3-Clamping assembly; 31-Metal clip; 32-Rubber sleeve; 4-Male terminal; 41-Second hook; 42-Pin header; 5-Connecting assembly; 51-Insulating protective sleeve; 52-Four-hole connector; 53-Grounding ring; 54-Anti-slip texture; 6-Female terminal; 61-Fixing base; 62-Card; 63-First hook; 64-Spring; 65-Pin groove; 7-Fuse assembly; 71-Interface base; 72-Fuse; 73-Resettable fuse; 74-Ventilation hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the male and female terminals of this utility model working together in an embodiment; Figure 3 This is a schematic diagram showing the engagement and disengagement of the male and female terminals provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the clamping component structure provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the connection component and safety component provided in an embodiment of this utility model. Figures 1 to 5 The capacitor testing fixture shown includes: a first cable 1 and a second cable 2. The first cable 1 is externally wrapped with a first hub sheath 11. One end of the first cable 1 is provided with a clamping component 3 for clamping the capacitor under test, and the other end is provided with a male terminal 4. The second cable 2 is externally wrapped with a second hub sheath 21. One end of the second cable 2 is provided with a connecting component 5 for connecting to the testing equipment, and the other end is provided with a female terminal 6 that matches the male terminal 4.

[0028] Exemplarily, in this embodiment of the invention, a fixture for measuring a supercapacitor is provided. The first cable 1 and the second cable 2 are both composed of four wires bundled together. Four clamping components 3 are also provided, each connected to one of the four electrodes of the supercapacitor. Two electrodes are used to provide the test current, and the other two electrodes are used to measure the battery voltage. The first cable sleeve 11 and the second cable sleeve 12 can bundle and insulate the first cable 1 and the second cable 2 respectively, making it easier for operators to connect or disconnect the circuit. The clamping component 3 clamps the capacitor under test. The first cable 1 and the second cable 2 are connected via the male terminal 4 and the female terminal 6. Finally, the connecting component 5 is connected to the testing equipment. This structure enables conduction between the capacitor under test and the testing equipment. After the circuit is connected, if an excessive instantaneous current is observed on the measuring equipment, the power can be immediately cut off by disconnecting the male terminal 4 and the female terminal 6 to prevent damage to the internal components of the testing equipment due to excessive current in the capacitor under test.

[0029] This utility model provides a capacitor testing fixture. By adding this fixture between the capacitor under test and the testing equipment, the connection of the test circuit is achieved by inserting a male terminal 4 into a female terminal 6. The capacitor under test is connected to the testing equipment via a first cable 1 and a second cable 2. A first cable bundle sleeve 11 and a second cable bundle sleeve 12 can respectively bundle and insulate the first cable 1 and the second cable 2, thereby facilitating the connection or disconnection of the circuit. This fixture structure is easy to assemble and disassemble. When the capacitor is not discharged and is measured directly, even if the current of the capacitor under test is too large, it can be quickly pulled out to disconnect the circuit, avoiding damage to the internal components of the testing equipment, reducing the risk of electric shock and fire, and effectively ensuring the safety and reliability of the test. It can effectively solve the problem of low testing safety in the prior art.

[0030] Optionally, a fixing seat 61 is provided on the female terminal 6, and a card 62 is provided on the fixing seat 61. The middle part of the card 62 is hinged to the fixing seat 61. A first hook 63 is provided at the end of the card 62 near the male terminal 4, and a second hook 41 matching the first hook 63 is provided on the male terminal 4.

[0031] Exemplary, in embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first hook 63 and the second hook 41 are inclined protrusion structures. Since the middle of the card 62 is hinged to the fixed base 61, when the card 62 is rotated so that the end of the card 62 near the male terminal 4 descends, the first hook 63 and the second hook 41 engage and lock due to the inclined mating surfaces, preventing the first hook 63 and the second hook 41 from disengaging, thus enhancing the connection stability between the male terminal 4 and the female terminal 6. When it is necessary to disconnect the connection between the male terminal 4 and the female terminal 6, the card 62 is rotated in the opposite direction, causing the first hook 63 and the second hook 41 to disengage, thereby disconnecting the male terminal 4 and the female terminal 6. By setting this structure, the connection stability of this tooling is improved.

[0032] Optionally, a spring 64 is provided on the female terminal 6, and the other end of the spring 64 is connected to the end of the card 62 away from the male terminal 4.

[0033] Exemplary, in embodiments of this utility model, such as Figure 2 and Figure 3 As shown, when the first hook 63 and the second hook 41 are engaged, the spring 64 is in a compressed state. At this time, due to the action of the spring 64, the end of the card 62 away from the male terminal 4 will be lifted up, thereby causing the end of the card 62 close to the male terminal to fall down. This increases the engaging force between the first hook 63 and the second hook 41, thereby further improving the connection stability of this tooling.

[0034] Optionally, the male terminal 4 is provided with a pin header 42 on the side near the female terminal 6, and the female terminal 6 is provided with a pin groove 65 that matches the pin header 42 on the side near the male terminal 4.

[0035] Exemplary, in embodiments of this utility model, such as Figure 3 As shown, by setting the pin header 42 and the pin groove 65 for connection, the contact area of ​​the first ribbon cable 1 and the second ribbon cable 2 can be increased. Furthermore, due to the structural limitation between the pin header 42 and the pin groove 65, the connection between the male terminal 4 and the female terminal 6 can be made more stable, thereby further improving the connection stability of this tooling.

[0036] Optionally, the clamping assembly 3 includes a metal clip 31 and a rubber sleeve 32. The metal clip 31 is connected to the first ribbon cable 1, and the rubber sleeve 32 is fitted over the handle of the metal clip 31.

[0037] Exemplary, in embodiments of this utility model, such as Figure 4 As shown, the metal clip 31 is used to clamp the electrodes of the capacitor to be tested. The tails of multiple metal clips 31 are all fixedly connected to the ends of the first row of wires 1. Rubber sleeves 32 are fixedly connected to the outer sides of the tails of multiple metal clips 31. The rubber sleeves 32 can prevent operators from accidentally touching the metal clips and causing electric shock.

[0038] Optionally, the connection assembly 5 includes an insulating sheath 51 and a four-hole connector 52, the four-hole connector 52 being disposed at the end of the second cable 2 for connection to a test device, and the insulating sheath 51 being disposed around the outside of the four-hole connector 52.

[0039] Exemplary, in embodiments of this utility model, such as Figure 5 As shown, the four-hole connector 52 can be plugged into the measuring equipment to realize the transmission of test signals. The insulating sleeve 51 has a certain degree of flexibility, which allows it to be bent and adjusted at an angle, making it convenient for the connecting components to dock with the measuring equipment. In addition, the insulating sleeve 51 prevents operators from accidentally touching it and getting electric shock, thereby further improving the safety of this tooling.

[0040] Optionally, a grounding ring 53 is provided on the four-hole connector 52, and the inner wall of the grounding ring 53 is fixedly connected to the outer wall of the four-hole connector 52.

[0041] Exemplary, in embodiments of this utility model, such as Figure 5 As shown, by setting a grounding ring 53, the surface of the tooling can be grounded to achieve electrostatic protection. The inner side of the grounding ring 53 is fixedly connected to the outer wall of the four-hole connector 52, realizing the connection between the grounding ring 53 and the four-hole connector 52. By setting this structure, the safety of this tooling is further improved.

[0042] Optionally, the outer wall of the grounding ring 53 is provided with anti-slip texture 54.

[0043] Exemplary, in embodiments of this utility model, such as Figure 5 As shown, by setting anti-slip texture 54, slippage can be prevented when plugging and unplugging the connection component 5, thereby improving the ease of operation of this tooling.

[0044] Optionally, a fuse assembly 7 is provided between the second cable 2 and the connecting assembly 5. The fuse assembly 7 includes an interface socket 71, a fuse tube 72, and a resettable fuse 73. The second cable 2 is connected to the interface socket 71, the interface socket 71 is connected to the resettable fuse 73, the resettable fuse 73 is connected to the connecting assembly 5, and the fuse tube 72 is arranged around the outside of the resettable fuse 73.

[0045] Exemplary, in embodiments of this utility model, such as Figure 5 As shown, by setting up the fuse component 7, the circuit can be automatically broken when the current is too high after the wiring is connected, protecting the test equipment from damage caused by excessive current. The interface socket 71 serves as the connection component between the second row of cables 2 and the resettable fuse 73. The fuse tube 72 has a cylindrical structure that surrounds the resettable fuse 73, providing it with physical protection. By setting up this structure, the measuring equipment can be further prevented from being damaged by excessive current, thus further improving the safety of this fixture.

[0046] Optionally, the fuse 72 is provided with a vent 74.

[0047] Exemplary, in embodiments of this utility model, such as Figure 5 As shown, multiple vent holes 74 are evenly spaced around the fuse tube 72. The vent holes 74 can prevent the self-resetting fuse 73 from overheating and causing the fuse tube 72 to burst, ensuring the safe use of the fuse tube 72 and further improving the safety of this tooling.

[0048] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing fixture for capacitors, characterized in that, include: First row of wires (1) and second row of wires (2). The first ribbon cable (1) is wrapped with a first hub sheath (11). One end of the first ribbon cable (1) is provided with a clamping component (3) for clamping the capacitor to be tested. The other end is provided with a male terminal (4). The second ribbon cable (2) is wrapped with a second hub sheath (21). One end of the second ribbon cable (2) is provided with a connecting component (5) for connecting the test equipment. The other end is provided with a female terminal (6) that matches the male terminal (4).

2. The capacitor testing fixture according to claim 1, characterized in that, A fixing seat (61) is provided on the female terminal (6), and a card (62) is provided on the fixing seat (61). The middle part of the card (62) is hinged to the fixing seat (61). A first hook (63) is provided on one end of the card (62) near the male terminal (4), and a second hook (41) matching the first hook (63) is provided on the male terminal (4).

3. The capacitor testing fixture according to claim 2, characterized in that, A spring (64) is provided on the female terminal (6), and the other end of the spring (64) is connected to the end of the card (62) away from the male terminal (4).

4. The capacitor testing fixture according to claim 1, characterized in that, The male terminal (4) is provided with a pin header (42) on the side near the female terminal (6), and the female terminal (6) is provided with a pin groove (65) that matches the pin header (42) on the side near the male terminal (4).

5. The capacitor testing fixture according to claim 1, characterized in that, The clamping assembly (3) includes a metal clip (31) and a rubber sleeve (32). The metal clip (31) is connected to the first ribbon cable (1), and the rubber sleeve (32) is fitted over the handle of the metal clip (31).

6. The capacitor testing fixture according to claim 1, characterized in that, The connection assembly (5) includes an insulating sheath (51) and a four-hole connector (52), the four-hole connector (52) being disposed at the end of the second cable (2) for connection to the test equipment, and the insulating sheath (51) being disposed around the outside of the four-hole connector (52).

7. A test fixture for capacitors according to claim 6, characterized in that, A grounding ring (53) is provided on the four-hole connector (52), and the inner wall of the grounding ring (53) is fixedly connected to the outer wall of the four-hole connector (52).

8. A test fixture for capacitors according to claim 7, characterized in that, The outer wall of the grounding ring (53) is provided with anti-slip texture (54).

9. A test fixture for capacitors according to claim 1, characterized in that, A fuse assembly (7) is provided between the second cable (2) and the connecting assembly (5). The fuse assembly (7) includes an interface socket (71), a fuse tube (72), and a resettable fuse (73). The second cable (2) is connected to the interface socket (71), the interface socket (71) is connected to the resettable fuse (73), the resettable fuse (73) is connected to the connecting assembly (5), and the fuse tube (72) is arranged around the outside of the resettable fuse (73).

10. A test fixture for a capacitor according to claim 9, characterized in that, The fuse (72) has a vent hole (74).

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