Online detection device for pulse capability of thin-film capacitor

Abstract

The utility model discloses a thin film capacitor pulse capability on-line detection device, which comprises a detection table, a detection box is fixedly arranged on the surface of the detection table, and a fixing mechanism is arranged in the detection box to fix the position of a thin film capacitor, and relates to the technical field of detection devices. According to the on-line detection device for the pulse capability of the thin-film capacitor, a fixing groove for detecting the pulse capability of the thin-film capacitor is formed in an independent area on the surface of the detection table, a slidable fixing block and a slidable power connection block are arranged in the fixing groove, and pins of the thin-film capacitor are fixed through elastic blocks on the surfaces of the fixing block and the power connection block; after the position of the thin-film capacitor is fixed by the elastic block, the position of the fixed block can be limited by the limiting assembly, so that the position of the thin-film capacitor to be detected during pulse capability detection is further guaranteed, and the capacitor with external pins of multiple sizes can be fixed with the detection table by the power connection block capable of moving; and multi-model capacitor pulse capability detection can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to an online detection device for the pulse capability of a film capacitor. Background Art

[0002] The pulse capability test of film capacitors is usually to verify their performance and reliability under specific pulse current conditions. During the test, the film capacitor is usually fixed with devices such as a pulse generator and an oscilloscope to compare the data generated by the film capacitor under different pulses.

[0003] The reference patent name is: Thin film capacitor detection device (patent announcement number: CN207408500U, patent announcement date: 2018-05-25), including an insulating panel, two wires are fixed inside the insulating panel, and a plurality of through holes are arranged at intervals on the insulating panel. The wires are fixed on both sides of the through holes, and a clamping device is fixed on the through holes. The clamping device is provided with a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are respectively connected to the insulating panel axis, which improves the test efficiency. When the test content needs to be changed, the voltage or current at both ends of the wire can be changed. There is no need to adjust the lead-out end of the film capacitor or repeatedly connect the lead-out end to the test instrument to avoid damage to the lead-out end.

[0004] However, when implementing the above technical scheme, the following problems exist: the above scheme can realize rapid detection of relevant data of capacitors under different voltage pulses, but the device for fixing the thin film capacitor in the above scheme has strict requirements on the outer dimensions of the thin film capacitor. In the above scheme, the thin film capacitor and the device are fixed by a groove of a certain size and an elastic conductive structure fixed in the groove and a retractable structure under the action of a spring. Therefore, the external distance of the pins of the internally fixed thin film capacitor needs to be within the moving range of the spring elastic conductive structure, and the requirements for the model of the thin film capacitor to be tested are relatively high. For this reason, the utility model provides an online detection device for the pulse capability of a thin film capacitor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an online detection device for the pulse capability of a film capacitor, which solves the problem that the capacitor fixing structure for the pulse capability detection of the film capacitor is limited in the size of the capacitor that can be fixed on its surface and can only be adapted to certain types of film capacitors.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an online detection device for the pulse capability of a film capacitor, comprising a detection table, a detection box is fixedly arranged on the surface of the detection table, and a fixing mechanism is arranged inside the detection box to fix the position of the film capacitor, and the fixing mechanism includes:

[0007] A fixing component is arranged inside the test bench to fix the position of the capacitor, including a fixing groove provided on the surface of the test bench, a power connection block and a fixing block are slidably arranged inside the fixing groove, a sliding component is arranged between the power connection block and the test bench to realize sliding drive, elastic blocks are fixedly arranged on the surfaces of the power connection block and the fixing block, an elastic component is arranged between the fixing blocks to realize position movement and restoration, and a limiting component is arranged between the fixing block and the test bench to realize position limitation;

[0008] The sliding assembly is arranged between the detection platform and the power connection block to realize sliding control, and comprises a sliding rod rotating inside the detection platform, and a synchronization assembly is arranged between the sliding rods to realize rotation synchronization.

[0009] Preferably, the limiting assembly comprises a limiting column rotatably connected to the inside of the detection platform, one end of the limiting column is rotatably connected to a transfer rod, and a limiting assembly is provided between the limiting column and the detection platform to achieve rotation limitation.

[0010] Preferably, the limiting component includes a limiting column that slides inside the detection platform, and a limiting groove is formed on the surface of the limiting column.

[0011] Preferably, the elastic component comprises an elastic rod that slides inside the fixed block, a spring is fixedly connected between the elastic rods, and a replacement block is slidably connected inside the detection table.

[0012] Preferably, the surface of the elastic rod is slidably connected to the surface of the replacement block, and the surface of the replacement block is slidably connected to a blocking block.

[0013] Preferably, the synchronization component comprises synchronization wheels fixed on the surface of the sliding rod, and a synchronization belt is transmission-connected between the synchronization wheels.

[0014] Beneficial Effects

[0015] The utility model provides an online detection device for the pulse capability of a film capacitor. Compared with the prior art, it has the following beneficial effects:

[0016] (1) The device for online testing the pulse capability of a film capacitor is provided with a fixed groove for testing the pulse capability of the film capacitor in a separate area on the surface of a testing platform. A slidable fixed block and a power connection block are provided inside the fixed groove. The pins of the film capacitor are fixed by elastic blocks on the surfaces of the two blocks. After the elastic block fixes the position of the film capacitor, the position of the fixed block can be limited by a limit assembly, thereby further ensuring the position of the film capacitor to be tested during the pulse capability test. The movable power connection block can facilitate the fixing of capacitors with external pins of various sizes to the testing platform, thereby realizing the pulse capability test of capacitors of various models.

[0017] (2) The on-line detection device for the pulse capability of the film capacitor is characterized by arranging a slidable limiting column between the limiting column rotating inside the detection platform and the detection platform. Through the shape of one end of the limiting column and the shape of the groove provided on the surface of the limiting column, the limiting column can contact the inner surface of the limiting groove on the surface of the limiting column after sliding, thereby achieving a locking, limiting the rotation of the limiting column inside the detection platform, and further limiting the sliding of the fixed block inside the detection platform. After the elastic block fixes the position of the film capacitor pin, the position of the fixed block can be limited, thereby further ensuring the stability of the position of the film capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural stereogram of the utility model;

[0019] Figure 2 It is a three-dimensional structural cross-sectional view of the fixing mechanism of the utility model;

[0020] Figure 3 It is a three-dimensional structural cross-sectional view of the elastic component of the utility model;

[0021] Figure 4 It is a three-dimensional structural exploded view of the limiting component of the utility model.

[0022] In the figure: 1-testing table, 2-testing box, 3-fixing mechanism, 31-fixing slot, 32-power connection block, 33-fixing block, 34-elastic block, 35-sliding rod, 4-elastic component, 41-elastic rod, 42-spring, 43-replacement block, 44-blocking block, 5-limiting component, 51-limiting column, 52-transfer rod, 53-limiting component, 531-limiting column, 532-limiting slot, 6-synchronizing component, 61-synchronizing wheel, 62-synchronizing belt. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 , the utility model provides two technical solutions:

[0025] Embodiment 1

[0026] An online detection device for the pulse capability of a film capacitor comprises a detection platform 1, a pulse generator and an oscilloscope are fixedly provided on the surface of the detection platform 1, a detection box 2 is fixedly provided on the surface of the detection platform 1, one side of the detection box 2 is a rotatable transparent material, the pulse generator and the oscilloscope are electrically connected to the corresponding positions of the detection box, and a fixing mechanism 3 is provided inside the detection box 2 to fix the position of the film capacitor, and the fixing mechanism 3 comprises:

[0027] A fixing component is arranged inside the test platform 1 to fix the position of the capacitor, including a fixing groove 31 provided on the surface of the test platform 1, a power connection block 32 and a fixing block 33 are slidably arranged inside the fixing groove 31, a sliding component is arranged between the power connection block 32 and the test platform 1 to realize sliding drive, elastic blocks 34 are fixedly arranged on the surfaces of the power connection block 32 and the fixing block 33, and the elastic blocks 34 are made of conductive material, an elastic component 4 is arranged between the fixing blocks 33 to realize position movement and restoration, and a limiting component 5 is arranged between the fixing block 33 and the test platform 1 to realize position limitation;

[0028] The sliding assembly is arranged between the detection platform 1 and the power connection block 32 to realize sliding control, and includes a sliding rod 35 that rotates inside the detection platform 1. The partial surface of the sliding rod 35 is provided with threads. The thread position of the sliding rod 35 is connected with the internal thread of the power connection block 32. The rotation of the sliding rod 35 can cause the power connection block 32 to slide toward each other. A synchronization assembly 6 is arranged between the sliding rods 35 to realize rotation synchronization;

[0029] A separate area is provided on the surface of the test bench 1 to open a fixed groove 31 for testing the pulse capacity of the film capacitor. A slidable fixed block 33 and a power connection block 32 are provided inside the fixed groove 31. The pins of the film capacitor are fixed by elastic blocks 34 on the surfaces of the two. After the elastic block 34 fixes the position of the film capacitor, the position of the fixed block 33 can be limited by the limit assembly 5, so as to further ensure the position of the film capacitor to be tested when the pulse capacity test is performed. The movable power connection block 32 can enable capacitors with external pins of various sizes to be fixed to the test bench 1, so as to realize the pulse capacity test of capacitors of various models.

[0030] Embodiment 2

[0031] The main difference from the first embodiment is:

[0032] A device for online detection of the pulse capacity of a film capacitor, wherein the limit component 5 includes a limit column 51 rotatably connected to the inside of a detection platform 1, one end of the limit column 51 is rotatably connected to a transfer rod 52, one end of the transfer rod 52 is rotatably connected to the surface of a fixed block 33, a limit component 53 is arranged between the limit column 51 and the detection platform 1 to realize rotation limitation, the limit component 53 includes a limit column 531 sliding with the inside of the detection platform 1, a limit groove 532 is provided on the surface of the limit column 51, and the limit column 531 can be engaged with the inner surface of the limit groove 532 by sliding, the elastic component 4 includes an elastic rod 41 sliding with the inside of the fixed block 33, a spring 42 is fixedly connected between the elastic rods 41, a replacement block 43 is slidably connected to the inside of the detection platform 1, the surface of the elastic rod 41 is slidably connected to the surface of the replacement block 43, and the sliding elastic rods 41 between the surfaces of the replacement blocks 43 at different positions The compression degree of the spring 42 is different. The position of the replacement block 43 and the detection table 1 is fixed by the limiting component 53. The surface of the replacement block 43 is slidably connected with the blocking block 44. The synchronization component 6 includes a synchronization wheel 61 fixed on the surface of the sliding rod 35. The synchronization belt 62 is transmission-connected between the synchronization wheels 61. A slidable limiting column 531 is arranged between the limiting column 51 rotating inside the detection table 1 and the detection table 1. Through the shape of one end of the limiting column 531 and the shape of the groove provided on the surface of the limiting column 51, the limiting column 531 can contact the inner surface of the limiting groove 532 on the surface of the limiting column 51 after sliding, so as to achieve carding, limit the rotation of the limiting column 51 inside the detection table 1, and further limit the sliding of the fixed block 33 inside the detection table 1. The position of the fixed block 33 can be limited after the elastic block 34 fixes the position of the film capacitor pin, so as to further ensure the stability of the position of the film capacitor.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] During operation, firstly, the distance between the connecting blocks 32 is adjusted according to the external distance of the pins of the film capacitor and the springs 42 between the appropriate fixing blocks 33 are selected. Firstly, the distance and the spring between the fixing blocks 33 are changed, and the replacement block 43 is slid to cause the appropriate elastic block 34 inside the replacement block 43 to slide through the groove to the surface of the fixing block 33 to limit the position of the replacement block 43. Then, the blocking block 44 on the surface of the replacement block 43 is slid. At this time, the elastic rod 41 will change its position under the action of the spring 42, thereby driving the fixing block 33 to change its position. Then, the sliding rod 35 is rotated. The rotation of the sliding rod 35 will drive the connecting blocks 32 to slide toward each other. After the position of the power block 32 is determined, stop rotating the sliding rod 35. At this time, the pin of the film capacitor can be inserted between the elastic block 34 between the fixed block 33 and the power block 32. The fixed block 33 will move under the action of the spring 42 and fit tightly against the surface of the pin. The sliding of the fixed block 33 can drive the limiting column 51 to rotate through the transfer rod 52. After the elastic block 34 fixes the position of the film capacitor, the limiting column 531 is slid. The contact between the limiting column 531 and the limiting groove 532 limits the rotation of the limiting column 51 again, so that the position of the fixed block 33 is fixed. At this time, the pulse capacity of the film capacitor can be tested by a pulse generator and an oscilloscope.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online detection device for the pulse capability of a film capacitor, comprising a detection platform (1), characterized in that: A test box (2) is fixedly arranged on the surface of the test platform (1), and a fixing mechanism (3) is arranged inside the test box (2) to fix the position of the film capacitor, wherein the fixing mechanism (3) comprises: A fixing component is arranged inside the test platform (1) to fix the position of the capacitor, comprising a fixing groove (31) provided on the surface of the test platform (1), a power connection block (32) and a fixing block (33) being slidably arranged inside the fixing groove (31), a sliding component being arranged between the power connection block (32) and the test platform (1) to realize sliding drive, elastic blocks (34) being fixedly arranged on the surfaces of the power connection block (32) and the fixing block (33), an elastic component (4) being arranged between the fixing blocks (33) to realize position movement and restoration, and a limiting component (5) being arranged between the fixing block (33) and the test platform (1) to realize position limitation; The sliding assembly is arranged between the detection platform (1) and the power connection block (32) to realize sliding control, and comprises a sliding rod (35) rotating inside the detection platform (1), and a synchronization assembly (6) is arranged between the sliding rods (35) to realize rotation synchronization.

2. The online detection device for pulse capability of a film capacitor according to claim 1, characterized in that: The limiting assembly (5) comprises a limiting column (51) rotatably connected to the inside of the detection platform (1); one end of the limiting column (51) is rotatably connected to a transfer rod (52); and a limiting assembly (53) is provided between the limiting column (51) and the detection platform (1) to achieve rotation limitation.

3. The online detection device for pulse capability of a film capacitor according to claim 2, characterized in that: The limiting component (53) comprises a limiting column (531) which slides inside the detection platform (1), and a limiting groove (532) is formed on the surface of the limiting column (51).

4. The device for online detection of pulse capability of a film capacitor according to claim 1, characterized in that: The elastic component (4) comprises an elastic rod (41) which slides inside the fixed block (33), a spring (42) is fixedly connected between the elastic rods (41), and a replacement block (43) is slidably connected inside the detection platform (1).

5. The online detection device for pulse capability of a film capacitor according to claim 4, characterized in that: The surface of the elastic rod (41) is slidably connected to the surface of the replacement block (43), and the surface of the replacement block (43) is slidably connected to a blocking block (44).

6. The online detection device for pulse capability of a film capacitor according to claim 1, characterized in that: The synchronization component (6) comprises a synchronization wheel (61) fixed on the surface of the sliding rod (35), and a synchronization belt (62) is connected between the synchronization wheels (61) for transmission.

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