阅读说明：本技术 一种逆导模块 (Reverse conducting module ) 是由 刘胜弟 于 2020-12-11 设计创作，主要内容包括：一种逆导模块,包括壳体、壳体上盖、壳体底板和若干个逆导组件,所述逆导组件包括管芯,所述管芯为一只晶闸管和一只快速整流管反并联封装,所述逆导组件还包括位于所述管芯上方的阴极电极柱,阴极电极柱上端穿出壳体上盖,所述阴极电极柱上套有绝缘套管,所述阴极电极柱与绝缘套管的下端分别具有第一凸缘和第二凸缘,所述绝缘套管上套有碟簧,所述碟簧上端设有压板,压板与壳体底板之间通过第一螺钉进行固定连接,所述管芯上部与阴极电极柱下端之间设有管芯压块,所述管芯下部设有公共极板,所述公共极板与壳体底板之间设有陶瓷垫片。本发明可以替代逆导晶闸管(RCT),大幅降低直流斩波装置和各种逆变器的成本。(The utility model provides a reverse-conducting module, includes casing, casing upper cover, casing bottom plate and a plurality of reverse-conducting subassembly, reverse-conducting subassembly includes the tube core, the tube core is the anti-parallelly connected encapsulation of a thyristor and a quick rectifier tube, reverse-conducting subassembly is still including being located the cathode electrode post of tube core top, the casing upper cover is worn out to cathode electrode post upper end, the cover has insulation support on the cathode electrode post, cathode electrode post has first flange and second flange respectively with insulation support's lower extreme, the cover has the dish spring on the insulation support, dish spring upper end is equipped with the clamp plate, carries out fixed connection through first screw between clamp plate and the casing bottom plate, be equipped with the tube core briquetting between tube core upper portion and the cathode electrode post lower extreme, the tube core lower part is equipped with public polar plate, be equipped with ceramic pad between public polar plate and the casing bottom plate. The invention can replace a Reverse Conducting Thyristor (RCT), and greatly reduces the cost of a direct current chopper and various inverters.)

1. The utility model provides a reverse-conducting module, includes casing (1), casing upper cover (2), casing bottom plate (3) and a plurality of reverse-conducting subassembly (4), reverse-conducting subassembly (4) include tube core (41), tube core (41) are the anti-parallel package of a thyristor and a fast rectifier tube, characterized by: the reverse conducting assembly (4) further comprises a cathode electrode column (42) positioned above the tube core (41), the upper end of the cathode electrode column (42) penetrates out of the upper cover (2) of the shell, an insulating sleeve (43) is sleeved on the cathode electrode column (42), the lower ends of the cathode electrode column (42) and the insulating sleeve (43) are respectively provided with a first flange (421) and a second flange (431), a disc spring (44) is sleeved on the insulating sleeve (43), a pressing plate (45) is arranged at the upper end of the disc spring (44), the pressing plate (45) is fixedly connected with the bottom plate (3) of the shell through a first screw (451), a gasket (441) is arranged between the lower end of the disc spring (44) and the upper end of the second flange (431), the tube core (41) is arranged above the bottom plate (3) of the shell, a tube core pressing block (46) is arranged between the upper part of the tube core (41) and the lower end of the cathode electrode, the utility model discloses a thyristor, its structure is characterized in that tube core (41) lower part is equipped with public polar plate (5), be equipped with ceramic gasket (6) between public polar plate (5) and casing bottom plate (3), be equipped with connecting plate (47) between first flange (421) and second flange (431), be equipped with negative pole lead wire (48) on connecting plate (47), negative pole lead wire (48) with the negative pole of thyristor is connected, be equipped with gate pole lead wire subassembly (411) on tube core (41), gate pole lead wire subassembly (411) with the gate pole of thyristor is connected, both sides are equipped with positive pole electrode post (11) and terminal seat (12) respectively about casing (1), public polar plate (5) are connected the positive pole of thyristor with positive pole electrode post (11), be equipped with control terminal (121) of a plurality of pairs on terminal seat (12), control terminal (121) negative pole lead wire (48) and gate pole lead wire subassembly (411) are connected to a pair respectively through connecting wire (13) control terminal (13 A terminal (121).

2. The inversion module of claim 1, wherein: the lower side of the die pressing block (46) is provided with a lead groove (461), one end of the lead groove (461) is communicated with the side wall of the die pressing block (46), and the gate lead assembly (411) is positioned in the lead groove (461).

3. The inversion module of claim 1, wherein: the shell upper cover (2) is fixedly connected with the pressure plate (45) through paired second screws (21), and the paired second screws (21) are respectively positioned at the front side and the rear side of the cathode electrode column (42).

4. The inversion module of claim 1, wherein: the left end of public polar plate (5) is equipped with riser (51), and riser (51) and the inner wall laminating of casing (1), riser (51) upper end are equipped with connection polar plate (52) that are connected with positive pole electrode post (11).

5. The inversion module of claim 1, wherein: and an insulating gasket (452) is arranged on the upper side of the pressure plate (45).

6. The inversion module of claim 1, wherein: and a limiting hole (453) in clearance fit with the insulating sleeve (43) is formed in the pressure plate (45).

7. The inversion module of claim 1, wherein: the cathode lead piece (48) is sandwiched between the first flange (421) and the connecting plate (47).

8. The inversion module of claim 1, wherein: the bottom of casing (1) is equipped with fixed part (15), and fixed part (15) upside passes through third screw (16) fixed connection casing bottom plate (3), casing (1) bottom is equipped with cavity (17), cavity (17) are located anode electrode post (11) under, casing bottom plate (3) extend to the opening part of cavity (17) and form buckle (31), the four corners of casing (1) is equipped with fixed foot (14).

Technical Field

The invention relates to the field of inverter circuit design, in particular to a reverse conducting module.

Background

A Reverse conducting thyristor RCT (Reverse-conducting thyristor) is also called a Reverse conducting thyristor. It features that a diode is connected between anode and cathode of thyristor in parallel in reverse direction to make emitter junctions of both anode and cathode in short circuit state. Due to the special circuit structure, the high-voltage-resistant high-temperature-resistant high-voltage-resistant. For example, a thyristor with a turn-off time of only a few microseconds and an operating frequency of tens of kilohertz is preferred over a fast thyristor (FSCR). The device is suitable for a switching power supply and a UPS uninterrupted power supply, one RCT can replace a thyristor and a freewheeling diode respectively, the use is convenient, and the circuit design can be simplified. A typical product of the thyristor is S3900MF, produced by Radio Corporation of America (RCA). The three leading-out ends are respectively a gate G, an anode A and a cathode K. S3900MF is not suitable for being applied to high-power direct-current chopper devices and various inverter circuits of subways, motor cars, urban trackless trolleybuses and industrial and mining electric locomotives due to the limitation of the packaging structure, small on-state average current and poor heat dissipation capability. Products similar to the reverse conducting thyristor RCT are developed abroad, devices of the same type are lacked at home, capital investment for developing the devices of the same type is very large, investment period is long, and products for replacing the devices are urgently needed in the market.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a reverse conducting module which is simple in structure, good in insulating property and firm in chip fixation.

The invention adopts the technical scheme for solving the technical problems that: a reverse conducting module comprises a shell, a shell upper cover, a shell bottom plate and a plurality of reverse conducting components, wherein each reverse conducting component comprises a tube core, the tube core is formed by reversely connecting and packaging a thyristor and a quick rectifier tube in parallel, each reverse conducting component also comprises a cathode electrode post positioned above the tube core, the upper end of the cathode electrode post penetrates out of the shell upper cover, an insulating sleeve is sleeved on the cathode electrode post, the lower ends of the cathode electrode post and the insulating sleeve are respectively provided with a first flange and a second flange, a disc spring is sleeved on the insulating sleeve, a pressing plate is arranged at the upper end of the disc spring, the pressing plate and the shell bottom plate are fixedly connected through a first screw, a gasket is arranged between the lower end of the disc spring and the upper end of the second flange, the tube core is arranged above the shell bottom plate, a pressing block is arranged between the upper part of the tube core and the lower end of the cathode electrode, the utility model discloses a thyristor's structure, including public polar plate and casing bottom plate, be equipped with the control terminal on the terminal seat, be equipped with ceramic gasket between public polar plate and the casing bottom plate, be equipped with the connecting plate between first flange and the second flange, be equipped with the negative pole lead wire piece on the connecting plate, the negative pole lead wire piece with the negative pole of thyristor is connected, be equipped with gate pole lead wire assembly on the tube core, gate pole lead wire assembly with the gate pole of thyristor is connected, both sides are equipped with positive pole electrode post and terminal seat respectively about the casing, public polar plate is connected the positive pole of thyristor with positive pole electrode post, be equipped with a plurality of pairs of control terminal on the.

For further improvement, a lead groove is arranged on the lower side of the die pressing block, one end of the lead groove is communicated with the side wall of the die pressing block, and the gate lead assembly is positioned in the lead groove.

Further perfecting, the shell upper cover is fixedly connected with the pressing plate through paired second screws, and the paired second screws are respectively positioned at the front side and the rear side of the cathode electrode post.

Further perfect, the left end of public polar plate is equipped with the riser, and the riser is laminated with the inner wall of casing, and the riser upper end is equipped with the connection polar plate that is connected with the positive pole electrode post.

Further perfection, the clamp plate upside is equipped with insulating gasket.

Further perfection, be equipped with the spacing hole with insulation support clearance fit on the clamp plate.

Further perfected, the cathode lead sheet is clamped between the first flange and the connecting plate.

Further perfect, the bottom of casing is equipped with the fixed part, and the fixed part upside passes through third screw fixed connection casing bottom plate, the casing bottom is equipped with the cavity, the cavity is located the anode electrode post under, the opening part that the casing bottom plate extends to the cavity forms the buckle, the four corners of casing is equipped with fixed foot.

Compared with the prior art, the invention has the beneficial effects that: 1. the reverse conducting module adopts a modular design, the tube core has a simple structure, the production cost is low, the reverse conducting component is convenient to assemble, the reverse conducting module is convenient to use integrally, and the circuit design can be simplified; the technical parameters such as on-state average current and the like are higher than those of a general S3900MF product, and the method can be applied to direct-current chopping devices and various inverter circuits of subways, motor cars, urban trolley buses and industrial and mining electric locomotives, so that the cost of the direct-current chopping devices and various inverters is greatly reduced. 2. The invention is provided with the disc spring and the tube core pressing block, the tube core is elastically fixed, the fixation is firm, the damping effect is good, and the position of the tube core is not easy to loosen; 3. the shell bottom plate is made of a ceramic copper-clad plate, and a welding layer is guaranteed to have no holes and good heat-conducting property through a unique welding process. The thermal cycle load times are approximately 10 times higher than the national standard. The ceramic gasket is arranged between the public polar plate and the shell bottom plate, the core pipe, the public polar plate and the shell bottom plate are mutually isolated, the shell bottom plate is uncharged in heat conduction, high in insulating strength and capable of guaranteeing personal safety. The insulating and moisture-proof performance is excellent, 4, an insulating sleeve and a core tube pressing block are arranged in the reverse conducting module, an imported high-grade heat conduction insulating packaging material is adopted, and the adjacent cathode electrode columns and the cathode electrode columns are mutually isolated from the core tube, so that the insulating and moisture-proof performance is excellent.

Drawings

FIG. 1 is a schematic front view of the present embodiment;

FIG. 2 is a schematic top view of the present embodiment;

FIG. 3 is a schematic diagram of the circuit connection of the present embodiment;

description of reference numerals: 1. the cathode lead comprises a shell, 11, an anode electrode column, 12, a terminal seat, 121, a control terminal, 13, a connecting lead, 14, a fixing pin, 15, a fixing part, 16, a third screw, 17, a cavity, 31, a buckle, 2, a shell upper cover, 21, a second screw, 3, a shell bottom plate, 4, a reverse conducting component, 41, a tube core, 411, a lead component, 42, a cathode electrode column, 421, a first flange, 43, an insulating sleeve, 431, a second flange, 44, a disc spring, 441, a gasket, 45, a pressing plate, 451, a first screw, 452, an insulating gasket, 453, a limiting hole, 46, a tube core pressing block, 461, a lead groove, 47, a connecting plate, 48, a cathode lead sheet, 5, a common electrode plate, 51, a vertical plate, 52, a connecting electrode plate, 6 and a ceramic gasket.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

referring to figures 1-3: in this embodiment 1, a reverse conducting module includes a housing 1, a housing upper cover 2, a housing bottom plate 3, and a plurality of reverse conducting assemblies 4, where the reverse conducting assemblies 4 include a tube core 41, the tube core 41 is a thyristor and a fast rectifier tube packaged in anti-parallel, the reverse conducting assemblies 4 further include a cathode electrode post 42 located above the tube core 41, the upper end of the cathode electrode post 42 penetrates through the housing upper cover 2, an insulating sleeve 43 is sleeved on the cathode electrode post 42, the lower ends of the cathode electrode post 42 and the insulating sleeve 43 respectively have a first flange 421 and a second flange 431, a disc spring 44 is sleeved on the insulating sleeve 43, the upper end of the disc spring 44 is provided with a pressing plate 45, the pressing plate 45 is fixedly connected with the housing bottom plate 3 through a first screw 451, a gasket 441 is disposed between the lower end of the disc spring 44 and the upper end of the second flange 431, the tube core 41 is disposed above the housing bottom plate 3, a tube core pressing block 46 is arranged between the upper part of the tube core 41 and the lower end of the cathode electrode post 42, a common electrode plate 5 is arranged at the lower part of the tube core 41, a ceramic gasket 6 is arranged between the common polar plate 5 and the shell bottom plate 3, a connecting plate 47 is arranged between the first flange 421 and the second flange 431, the connecting plate 47 is provided with a cathode lead sheet 48, the cathode lead sheet 48 is connected with the cathode of the thyristor, a gate lead assembly 411 is arranged on the die 41, the gate lead assembly 411 is connected with the gate of the thyristor, the left side and the right side of the shell 1 are respectively provided with an anode electrode post 11 and a terminal seat 12, the common polar plate 5 is connected with the anode of the thyristor and the anode electrode post 11, the terminal block 12 is provided with a plurality of pairs of control terminals 121, and the cathode lead 48 and the gate lead assembly 411 of the control terminals 121 are respectively connected to a pair of the control terminals 121 through connecting wires 13. A lead groove 461 is arranged at the lower side of the die pressing block 46, one end of the lead groove 461 is communicated with the side wall of the die pressing block 46, and the gate lead assembly 411 is positioned in the lead groove 461. The housing upper cover 2 is fixedly connected with the pressing plate 45 through paired second screws 21, and the paired second screws 21 are respectively positioned at the front side and the rear side of the cathode electrode post 42. The technical parameters of the product of the invention are shown in the following table:

parameter(s)	Symbol	Unit of	MN500-30	Remarks for note
					On-state average current	IT(AV)	A	500
Reverse average current	IR(AV)	A	500
					Off-state repetitive peak voltage	VDRM	V	≥3000
Peak voltage at on state	VTM	V	≤3.0(1500A25℃)
					Peak reverse voltage	VRM	V	≤2.0(1500A25℃)
Off-state repetitive peak current	IDRM	mA	≤1.0
					Gate trigger voltage	VGT	V	≤3.0
Gate trigger current	IGT	mA	≤70
					Commutation off time	tq	μs
Critical rate of rise of off-state voltage	dV/dt	V/μs	＞500(200025℃)
					On-state surge current	ITSM	kA	7.5

In addition, on the basis of embodiment 1, a riser 51 is arranged at the left end of the common polar plate 5, the riser 51 is attached to the inner wall of the shell 1, and a connecting polar plate 52 connected with the anode electrode column 11 is arranged at the upper end of the riser 51. The area of the common polar plate 5 is large, and heat dissipation is fast. The insulating gasket 452 is arranged on the upper side of the pressing plate 45, so that the insulating property of the upper side can be improved. The pressure plate 45 is provided with a limiting hole 453 in clearance fit with the insulating sleeve 43, so that the cathode electrode post 42 can be limited, the anti-seismic performance is improved, and the structural strength is enhanced. The cathode lead sheet 48 is clamped between the first flange 421 and the connecting plate 47, and the cathode lead sheet 48 is firmly fixed and has good contact performance. The bottom of casing 1 is equipped with fixed part 15, and fixed part 15 upside passes through third screw 16 fixed connection casing bottom plate 3, 1 bottom of casing is equipped with cavity 17, cavity 17 is located anode electrode post 11 under, casing bottom plate 3 extends to the opening part of cavity 17 and forms buckle 31, can be used for buckle location and increase heat radiating area. Four corners of the shell 1 are provided with fixing feet 14 for fixing bolts.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.