Device capable of being used for aging capacitor inner core

Abstract

The invention discloses a device for aging a capacitor inner core, and belongs to the technical field of electronic component aging equipment. Comprising first metal mounting plates and second metal mounting plates, the second metal mounting plates are arranged between the upper ends and the lower ends of the first metal mounting plates respectively, second insulating plates are arranged on the rear sides of the second metal mounting plates, and the edges of the opposite sides of the second metal mounting plates form assembling plates; a plurality of first bolt fastening assemblies are arranged on the upper assembly plate, a first electrode leading-out end is arranged on the upper assembly plate, a second bolt fastening assembly is arranged on the lower assembly plate, a second electrode leading-out end is arranged on the lower assembly plate, each first bolt fastening assembly comprises a first bolt, and each second bolt fastening assembly comprises a second bolt. The second bolt fastening assembly comprises a second bolt, the capacitor inner core is connected between the first bolt and the second bolt, and the side portion of the capacitor inner core is supported in the limiting opening. The device has the advantages that batch aging experiments of capacitor inner cores with different sizes and specifications can be met, the inner cores can be quickly mounted, and the operation is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic component aging equipment, and in particular relates to a device that can be used for aging the inner core of a capacitor. Background Art

[0002] Film capacitors are widely used in the power electronics industry, and they play supporting, filtering, and absorbing roles in converters, inverters, and other circuits. In order to meet the application requirements of film capacitors in various circuits, film capacitors often use multiple capacitor cores in series to improve the withstand voltage performance and in parallel to increase the capacity. This type of capacitor is called a combined capacitor.

[0003] For modular capacitors, the quality of each capacitor core affects the quality of the capacitor. Like other electronic components, aging is an effective means to screen out early failure products of modular capacitors. Modular capacitors usually use a secondary aging method to improve product reliability, that is, aging is performed after the capacitor core is made and after the product is produced. Modular capacitors age the capacitor core and make products with quality risks fail in advance to ensure product reliability. If the capacitor core with quality problems can be eliminated, it is not only one of the key factors to ensure the quality of modular capacitors, but also has a very important significance for reducing costs and improving production efficiency.

[0004] Capacitor aging usually involves applying an aging voltage higher than the calibrated voltage value to the capacitor under a certain temperature environment, so that the capacitor can "self-heal" under the action of temperature and electric field, such as dielectric weaknesses and other defective areas, and various evaluation methods are used to determine whether the "self-healing" is "excessive self-healing". If a capacitor core "excessively self-heals", it will be eliminated. With the increasing demand for modular capacitors, the current aging fixtures can no longer meet the requirements. Traditional aging devices require a lot of manual operations to install and disassemble capacitors one by one, which is cumbersome to operate, inefficient, and cannot meet the needs of large-scale production.

[0005] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0006] The purpose of the present invention is to provide a device that can be used for capacitor core aging, which can meet the needs of batch aging experiments of capacitor cores of different sizes and specifications, and can quickly install capacitor cores and is easy to operate.

[0007] The object of the present invention is achieved in this way. A device that can be used for aging the inner core of a capacitor includes a pair of first metal mounting plates and a pair of second metal mounting plates. The pair of first metal mounting plates are arranged parallel and symmetrically on the left and right. The first metal mounting plates are provided with modular holes. The pair of second metal mounting plates are respectively arranged between the upper ends and lower ends of the pair of first metal mounting plates. The two ends of the second metal mounting plates in the length direction are respectively connected to the first metal mounting plates through a first insulating plate. A second insulating plate is arranged on the rear side of the second metal mounting plate. The second insulating plate extends outwardly toward the edges of the opposite sides of the pair of second metal mounting plates, and a limited position opening is formed at the end interval of the extended end. The edges of the opposite sides of the pair of second metal mounting plates are bent outward to form an assembly plate, wherein a plurality of first bolt fastening assemblies are arranged on the assembly plate on the upper side corresponding to the limited position opening of the second insulating plate, and the upper A first electrode lead-out terminal is provided at one end of the assembly plate in the length direction, and a second bolt fastening assembly is provided on the assembly plate on the lower side corresponding to the first bolt fastening assembly, and a second electrode lead-out terminal is provided on the assembly plate on the lower side corresponding to the first electrode lead-out terminal, the first bolt fastening assembly includes a first bolt, the second bolt fastening assembly includes a second bolt, a spring and an insulating cap, the spring is sleeved on the second bolt, the lower end of the second bolt passes through the assembly plate and is connected to the insulating cap, a connecting wire is led out from the first electrode lead-out terminal and the second electrode lead-out terminal respectively, wherein the connecting wire on the first electrode lead-out terminal is connected and conducted to each first bolt in sequence, and the connecting wire on the second electrode lead-out terminal is connected and conducted to each second bolt in sequence, the capacitor core is connected between the first bolt and the second bolt, and the side support of the capacitor core is fixed by the limiting opening.

[0008] In a specific embodiment of the present invention, the first bolt fastening assembly also includes a first nut and a first metal cap, the first metal cap is arranged at the bottom of the assembly plate located above, and the first bolt passes through the first metal cap and the assembly plate from bottom to top and is tightened by the first nut; the second bolt fastening assembly also includes a second metal cap, and the second metal cap is arranged between the head of the second bolt and the spring. After the capacitor core is installed, the two side end faces in the length direction are respectively in contact and conductive with the first metal cap and the second metal cap.

[0009] In another specific embodiment of the present invention, a plurality of metal washers are provided on the connecting wire, the metal washer led out from the first electrode lead-out terminal is sleeved on the first bolt above the first metal cap and is in contact and conduction with the first bolt, and a first fixing nut is screwed on the upper end of the metal washer on the first bolt to fix the metal washer; the metal washer led out from the second electrode lead-out terminal is sleeved on the second bolt below the second metal cap and is in contact and conduction with the second bolt, and a second fixing nut is screwed on the second bolt below the metal washer to fix the metal washer, and the upper end of the spring abuts against the second fixing nut.

[0010] In another specific embodiment of the present invention, one end of the first insulating plate is fixed to the second metal mounting plate by an insulating plate screw, and the other end is connected and fixed to the modular holes on the first metal mounting plate by a pair of insulating plate bolts spaced apart vertically; the spacing between the first bolt and the second bolt is adjusted by the corresponding different modular holes of the first insulating plate.

[0011] In another specific embodiment of the present invention, the distance between two adjacent modular holes is 20-30 mm.

[0012] In yet another specific embodiment of the present invention, the spacing between two adjacent first bolts and the spacing between two adjacent second bolts are both 51-55 mm.

[0013] In a further specific embodiment of the present invention, the first electrode lead-in terminal and the second electrode lead-in terminal are both bolt and nut structures.

[0014] Due to the adoption of the above structure, the present invention has the following beneficial effects compared with the prior art: the capacitor core can be quickly installed and removed; it is suitable for simultaneous aging of multiple capacitor cores of multiple specifications and sizes, and can realize batch aging experiments of combined capacitors, improve aging efficiency, and reduce labor costs; the device structure is simple and reasonable, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the front side of the present invention; Figure 2 It is a structural schematic diagram of the back side of the present invention; Figure 3 A schematic diagram of an embodiment of the present invention; Figure 4 It is a schematic diagram of another embodiment of the present invention.

[0016] In the figure: 1. first metal mounting plate, 11. modular hole; 2. second metal mounting plate, 21. assembly plate; 3. first insulating plate, 31. insulating plate screw, 32. insulating plate bolt; 4. second insulating plate, 41. limiting opening; 5. first bolt fastening assembly, 51. first bolt, 52. first nut, 53. first metal cap, 54. first fixing nut; 6. second bolt fastening assembly, 61. second bolt, 62. spring, 63. insulating cap, 64. second metal cap, 65. second fixing nut; 7. first electrode lead-out terminal; 8. second electrode lead-out terminal 9. connecting wire, 91. metal washer. DETAILED DESCRIPTION

[0017] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0018] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are referring to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solution provided by the present invention.

[0019] See also Figure 1 and Figure 2The present invention relates to a device that can be used for aging the inner core of a capacitor, which is composed of a pair of first metal mounting plates 1 arranged in parallel and spaced apart from each other, and a pair of second metal mounting plates 2 arranged at the upper and lower ends of the pair of first metal mounting plates 1 to form a rectangular frame structure. The first metal mounting plate 1 is provided with a modular hole 11, and the spacing between two adjacent modular holes 11 is 20-30 mm, preferably 25 mm in this embodiment. The two ends of the second metal mounting plate 2 in the length direction are respectively connected to the first metal mounting plate 1 through a first insulating plate 3, and the first insulating plate 3 plays an insulating role. One end of the first insulating plate 3 is fixed to the second metal mounting plate 2 through an insulating plate screw 31, and the other end is connected and fixed to the modular hole 11 on the first metal mounting plate 1 through a pair of insulating plate bolts 32 spaced apart from each other. A second insulating plate 4 is arranged on the rear side of the second metal mounting plate 2, and the second insulating plate 4 extends outward toward the edge of the opposite side of the pair of second metal mounting plates 2, and a limited position opening 41 is formed at the end of the extension end. The edges of the opposite sides of a pair of second metal mounting plates 2 are bent outward to form an assembly plate 21, wherein the upper assembly plate 21 is provided with a first electrode lead-out terminal 7 at one end in the length direction, and the lower assembly plate 21 is provided with a second electrode lead-out terminal 8 corresponding to the first electrode lead-out terminal 7. The first electrode lead-out terminal 7 and the second electrode lead-out terminal 8 are used for external power supply. The first electrode lead-out terminal 7 and the second electrode lead-out terminal 8 are both bolt and nut structures, and a pair of electrode bolts pass through a pair of assembly plates 21 back to back and are fixed by a pair of electrode nuts.

[0020] Furthermore, a plurality of first bolt fastening assemblies 5 are provided on the upper assembly plate 21 of the pair of assembly plates 21 corresponding to the limiting opening 41 of the second insulating plate 4, and a second bolt fastening assembly 6 is provided on the lower assembly plate 21 corresponding to the first bolt fastening assembly 5. The capacitor core is provided between the first bolt fastening assembly 5 and the second bolt fastening assembly 6, and the side of the capacitor core is supported in the limiting opening 41 and fixed by the limiting opening 41. Specifically, the first bolt fastening assembly 5 includes a first bolt 51, a first nut 52 and a first metal cap 53. The first metal cap 53 is provided at the bottom of the upper assembly plate 21. The first bolt 51 passes through the first metal cap 53 and the assembly plate 21 from bottom to top and is tightened by the first nut 52. The first bolt 51 is in conduction with the first metal cap 53. The second bolt fastening assembly 6 includes a second bolt 61, a spring 62, an insulating cap 63 and a second metal cap 64. The spring 62 is sleeved on the second bolt 61. The lower end of the second bolt 61 passes through the assembly plate 21 and is connected to the insulating cap 63. The second metal cap 64 is arranged between the head of the second bolt 61 and the spring 62. The second bolt 61 is connected to the second metal cap 64.

[0021] The first electrode lead-out terminal 7 and the second electrode lead-out terminal 8 are each led out with a connecting wire 9, wherein the connecting wire 9 on the first electrode lead-out terminal 7 is sequentially connected to and conducted with each first bolt 51, and the connecting wire 9 on the second electrode lead-out terminal 8 is sequentially connected to and conducted with each second bolt 61. The capacitor core is arranged between the first bolt 51 and the second bolt 61, and is fixed by the limiting opening 41. After the capacitor core is installed, the two side end surfaces in the length direction are Figure 1 The upper and lower end surfaces are respectively in contact with the first metal cap 53 and the second metal cap 64 to be connected, and the aging operation begins when electricity is supplied.

[0022] The connecting wire 9 is provided with a plurality of metal washers 91. The metal washers 91 led out from the first electrode lead-out terminal 7 are sleeved on the first bolt 51 above the first metal cap 53 to be in contact with the first bolt 51, and the first fixing nut 54 is screwed on the upper end of the metal washers 91 on the first bolt 51 to fix the metal washers 91; the metal washers 91 led out from the second electrode lead-out terminal 8 are sleeved on the second bolt 61 below the second metal cap 64 to be in contact with the second bolt 61, and the second fixing nut 65 is screwed on the lower end of the metal washers 91 on the second bolt 61 to fix the metal washers 91, and the upper end of the spring 62 abuts against the second fixing nut 65.

[0023] The first insulating plate 3 can adjust the spacing between the first bolt fastening assembly 5 and the second bolt fastening assembly 6 to accommodate capacitor cores of different lengths by matching the insulating plate bolts 32 with holes 11 of different modules.

[0024] In this embodiment, the spacing between two adjacent first bolts 51 and the spacing between two adjacent second bolts 61 are 51-55mm, and in this embodiment, they are preferably 52.5mm. When the diameter of the capacitor core is ≤50mm, place it in sequence from left to right; when the diameter of the capacitor core is >50mm, place it in sequence from left to right. When placing the capacitor core, pull the insulating cap 63, place the capacitor core between the first bolt 51 and the second bolt 61, and fix it by the limiting opening 41, loosen the insulating cap 63, and rely on the spring 62 to ensure good contact between the capacitor core, and start the aging process after the first electrode lead terminal 7 and the second electrode lead terminal 8 are connected to an external power supply. Figure 3 This is a schematic diagram of the flat core installation; Figure 4 Schematic diagram of the installation of the round core. In general, the device is placed horizontally for use, that is, the bottom of the capacitor core is accommodated in the limiting opening 41 to be supported and fixed.

[0025] The present invention can quickly install the capacitor core and can maintain good conductivity and overcurrent capability during the aging process, and can batch age capacitor cores of different lengths and diameters, thereby achieving the purpose of the invention.

Claims

1. A device for aging capacitor core, characterized by: The invention comprises a pair of first metal mounting plates (1) and a pair of second metal mounting plates (2), wherein the pair of first metal mounting plates (1) are arranged parallel and symmetrically on the left and right, the first metal mounting plates (1) are provided with a modular hole (11), the pair of second metal mounting plates (2) are arranged between the upper ends and the lower ends of the pair of first metal mounting plates (1), the two ends of the second metal mounting plates (2) in the length direction are respectively connected to the first metal mounting plates (1) through a first insulating plate (3), and the rear side of the second metal mounting plates (2) is provided with a second insulating plate (4 ), the second insulating plate (4) extends outwardly toward the edges of the opposite sides of the pair of second metal mounting plates (2), and a limiting opening (41) is formed at intervals at the end of the extension end, and the edges of the opposite sides of the pair of second metal mounting plates (2) are bent outwardly to form an assembly plate (21), wherein the upper assembly plate (21) is provided with a plurality of first bolt fastening assemblies (5) corresponding to the limiting opening (41) of the second insulating plate (4), and the upper assembly plate (21) is provided with a first electrode lead-out terminal (7) at one end in the length direction, and the lower assembly plate A second bolt fastening assembly (6) is provided on the lower assembly plate (21) corresponding to the first bolt fastening assembly (5), and a second electrode lead-out terminal (8) is provided on the lower assembly plate (21) corresponding to the first electrode lead-out terminal (7). The first bolt fastening assembly (5) includes a first bolt (51), and the second bolt fastening assembly (6) includes a second bolt (61), a spring (62) and an insulating cap (63). The spring (62) is sleeved on the second bolt (61), and the lower end of the second bolt (61) passes through the assembly plate (21). The first electrode lead-out terminal (7) and the second electrode lead-out terminal (8) are connected with a connecting wire (9) respectively, wherein the connecting wire (9) on the first electrode lead-out terminal (7) is sequentially connected to and conducts each first bolt (51), and the connecting wire (9) on the second electrode lead-out terminal (8) is sequentially connected to and conducts each second bolt (61), and the capacitor core is connected between the first bolt (51) and the second bolt (61), and the side of the capacitor core is supported in the limiting opening (41) and is fixed by the limiting opening (41).

2. The device for aging capacitor core according to claim 1, characterized in that: The first bolt fastening assembly (5) further comprises a first nut (52) and a first metal cap (53), wherein the first metal cap (53) is arranged at the bottom of the assembly plate (21) located above, and the first bolt (51) passes through the first metal cap (53) and the assembly plate (21) from bottom to top and is tightened by the first nut (52); the second bolt fastening assembly (6) further comprises a second metal cap (64), wherein the second metal cap (64) is arranged between the head of the second bolt (61) and the spring (62), and after the capacitor core is installed, the two side end surfaces in the length direction are in contact and conduction with the first metal cap (53) and the second metal cap (64) respectively.

3. The device for aging capacitor core according to claim 2, characterized in that: The connecting wire (9) is provided with a plurality of metal washers (91); the metal washers (91) led out from the first electrode lead-out terminal (7) are sleeved on the first bolt (51) above the first metal cap (53) to be in contact and conduction with the first bolt (51); a first fixing nut (54) is screwed on the upper end of the metal washers (91) on the first bolt (51) to fix the metal washers (91); the metal washers (91) led out from the second electrode lead-out terminal (8) are sleeved on the second bolt (61) below the second metal cap (64) to be in contact and conduction with the second bolt (61); a second fixing nut (65) is screwed on the lower end of the metal washers (91) on the second bolt (61) to fix the metal washers (91); the upper end of the spring (62) abuts against the second fixing nut (65).

4. The device for aging capacitor core according to claim 1, characterized in that: One end of the first insulating plate (3) is fixed to the second metal mounting plate (2) via an insulating plate screw (31), and the other end is connected and fixed to the modular hole (11) on the first metal mounting plate (1) via a pair of insulating plate bolts (32) spaced apart from each other; the spacing between the first bolt (51) and the second bolt (61) is adjusted by the first insulating plate (3) corresponding to different modular holes (11).

5. The device for capacitor core aging according to claim 1, characterized in that: The distance between two adjacent modular holes (11) is 20-30 mm.

6. The device for capacitor core aging according to claim 1, characterized in that: The spacing between two adjacent first bolts (51) and the spacing between two adjacent second bolts (61) are both 51-55 mm.

7. The device for capacitor core aging according to claim 1, characterized in that: The first electrode lead-out terminal (7) and the second electrode lead-out terminal (8) are both bolt and nut structures.

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