CN212461670U - Turn-off thyristor device with split gate drive - Google Patents
Turn-off thyristor device with split gate drive Download PDFInfo
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- CN212461670U CN212461670U CN202021457402.1U CN202021457402U CN212461670U CN 212461670 U CN212461670 U CN 212461670U CN 202021457402 U CN202021457402 U CN 202021457402U CN 212461670 U CN212461670 U CN 212461670U
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Abstract
The utility model discloses a can turn off thyristor device with disconnect-type gate drive, include: the turn-off thyristor shell and the accessory interface board, the gate drive board and the connection structure; the turn-off thyristor shell and the auxiliary interface board are connected in a low-inductance integrated connection mode; the gate pole driving board comprises a driving circuit module; the auxiliary interface board and the gate drive board are detachably connected through the connecting structure, so that the separation or combination between the turn-off thyristor tube shell and the gate drive board is realized.
Description
Technical Field
The utility model relates to the field of semiconductor technology, in particular to can turn off thyristor device with disconnect-type gate drive.
Background
The turn-off thyristor is used as a novel high-capacity power electronic switching device, has the advantages of reduced on-state voltage, large surge current and the like, and has important application in the fields of solid-state circuit breakers, current converters, power electronic transformers and the like. IGCT and ETO are two different driving methods commonly used for the turn-off thyristor, and their electrical topology structures are respectively shown in fig. 1a and fig. 1b, which include two parts, a turn-off thyristor element and an integrated gate drive, when the turn-on is triggered, the driving circuit injects a few hundred amperes of trigger current into the gate (G), and the trigger current needs to have higher di/dt to ensure the uniform turn-on of the chip; when the circuit is turned off, the IGCT drive circuit rapidly converts the current of the emitter (E) to the gate pole turn-off circuit (QG and COFF, the typical conversion time is about 1 us) through the pre-charged negative voltage capacitor, and the ETO drive circuit rapidly converts the current of the emitter (E) to the gate pole turn-off circuit (QG, the typical conversion time is about 1 us) through the switching (QE turning off and QG turning on) between the two groups of MOSFETs so as to realize the drive condition of hard turn-off.
Because of the need to rapidly commutate the emitter current to the gate when switching off, a small parasitic inductance (typically on the order of nH) of the commutation loop between the gate drive turn-off circuit and the turn-off thyristor element is required. In order to achieve the purpose, the IGCT and the ETO both adopt an integrated close connection mode of a driving circuit board and a tube shell of a turn-off thyristor element at present, if a gate drive fails in the using process, the gate drive cannot be directly disassembled or replaced, the turn-off thyristor device is required to be integrally disassembled from a press-fitting assembly, and the maintenance cost of the assembly is greatly increased. In addition, the relative position of the gate drive with the turn-off thyristor shell is fixed, which is not beneficial to the design flexibility of the press mounting assembly of the turn-off thyristor device and influences the design of a radiator, a copper bar, a water cooling system and the like.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a can turn off thyristor device with disconnect-type gate drive, wherein, include:
the turn-off thyristor tube shell and the auxiliary interface board are connected by adopting a low-inductance integrated connection mode;
the gate pole driving board comprises a driving circuit module;
and the auxiliary interface board and the gate pole driving board are detachably connected through the connecting structure so as to realize the separation or combination of the turn-off thyristor case and the gate pole driving board.
The turn-off thyristor device is characterized in that the connection structure is a rigid connection structure.
In the above turn-off thyristor device, the first connection holes are respectively formed in the overlapping portions of the accessory interface board and the gate driver board, and the rigid connection structure includes: and one end of the screw penetrates through the first connecting hole and then is connected with the nut.
The turn-off thyristor device described above, wherein the rigid connection structure comprises:
an upper fastener disposed above the gate driver plate;
the lower fastening piece is arranged below the auxiliary interface board;
two fixing pieces connecting the upper fastening piece and the lower fastening piece.
In the above turn-off thyristor device, the auxiliary interface and the gate driver board are respectively provided with at least one first positioning hole in an aligned manner, and the upper fastening member and/or the lower fastening member are further provided with at least one positioning portion, and the positioning portions correspondingly penetrate through the first positioning holes.
In the above turn-off thyristor device, the fixing member is a bolt, one of the two bolts is connected to one end of the upper fastening member and one end of the lower fastening member, and the other of the two bolts is connected to the other end of the upper fastening member and the other end of the lower fastening member.
In the above-mentioned turn-off thyristor device, the fixing member is a snap, one of the two snaps is connected to one end of the upper fastening member and one end of the lower fastening member, and the other of the two snaps is connected to the other end of the upper fastening member and the other end of the lower fastening member.
In the above-mentioned turn-off thyristor device, the fixing member is an eccentric wheel, one of the two eccentric wheels is connected to one end of the upper fastening member and one end of the lower fastening member, and the other of the two eccentric wheels is connected to the other end of the upper fastening member and the other end of the lower fastening member.
In the above turn-off thyristor device, the connection structure is a flexible connection structure.
In the above turn-off thyristor device, the auxiliary interface board includes a first portion and a second portion, second connection holes are respectively formed in the overlapping portions of the first portion and the gate driving board, and the flexible connection structure includes:
a flexible printed board connecting the first portion and the second portion;
and one end of the screw penetrates through the second connecting hole and then is connected with the nut.
The turn-off thyristor device, wherein the auxiliary interface board includes a first portion and a second portion, and the flexible connection structure includes:
an upper fastener disposed above the gate driver plate;
the lower fastening piece is arranged below the auxiliary interface board;
a flexible printed board connecting the first portion and the second portion;
and a fixing member connecting the upper fastening member and the lower fastening member.
The turn-off thyristor device described above, wherein the flexible connection structure comprises:
the flexible printed board compaction interface is arranged on the gate pole driving board and is electrically connected with the gate pole driving board;
the pressing device is arranged on the pressing interface of the flexible printed board;
one end of the flexible printed board is connected to the accessory interface board, the other end of the flexible printed board is pressed on the gate electrode driving board through the pressing device, and the flexible printed board is electrically connected with the accessory interface board and the gate electrode driving board in a low-impedance mode.
The turn-off thyristor device described above, wherein the flexible connection structure comprises:
one end of the composite row is connected to the gate pole driving board, and the other end of the composite row is connected to the auxiliary interface board.
In the above turn-off thyristor device, the accessory interface board and the gate driver board are both multilayer PCBs, and the copper-laying structures of the accessory interface board and the gate driver board are: the gate pole and the emitter electrode are distributed at intervals, through-flow is realized by mutual contact of corresponding exposed metal areas, and a plurality of through holes are arranged between layers near the copper-paving area.
To sum up, compared with the prior art, the utility model has the advantages that: the utility model discloses can turn-off thyristor device (containing IGCT and ETO etc.) utensil rigid contact and two kinds of connected modes of flexible contact with disconnect-type gate pole driven, gate pole commutation return circuit low parasitic inductance when satisfying the turn-off, can realize can turn-off thyristor device tube and gate pole driven separation, only dismantle gate pole drive alone when needing to be changed the drive, be convenient for realize on-line maintenance and change. The gate drive and the envelope may be connected in a variety of low impedance connections to suit different applications.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1a is an IGCT electrical topology;
FIG. 1b is an ETO electrical topology;
FIG. 2 is a schematic view of the rigid connection structure of the present invention;
FIG. 3 is a schematic diagram of a copper-clad structure with low parasitic inductance;
FIG. 4 is a schematic structural diagram of the first embodiment;
FIG. 5 is a schematic structural diagram of a second embodiment;
FIG. 6 is a schematic structural diagram of a third embodiment;
FIG. 7 is a schematic structural diagram of a fourth embodiment;
FIG. 8 is a schematic view of the flexible connection structure of the present invention;
FIG. 9 is a schematic structural view of the fifth embodiment;
FIG. 10 is a schematic structural view of a sixth embodiment;
fig. 11 is a schematic structural diagram of the seventh embodiment.
Wherein the reference numerals are;
prior art fig. 1 a:
1: turn-off thyristor element portion 7: IGCT cathode K
2: integrated gate driving portion 8: turn off capacitor pre-charge power supply
3: turn-off thyristor chip 9: off control MOSFET QG
4: turn-off thyristor emitter E10: switch off the capacitor COFF
5: gate of turn-off thyristor G11: switching on trigger current source
6: IGCT anode A
Prior art fig. 1 b:
1: turn-off thyristor element portion 6: ETO Anode A
2: integrated gate driving portion 7: ETO cathode K
3: turn-off thyristor chip 8: turn-off emitter control MOSFET QE
4: turn-off thyristor emitter E9: turn-off gate control MOSFET QG
5: gate G10 of turn-off thyristor: switching on trigger current source
The utility model discloses:
p1: top a-plate (gate potential) P11: b plate top layer (gate pole potential)
P2: a plate interlayer 1 (emitter potential) P12: b plate intermediate layer 1 (emitter potential)
P3: plate a interlayer 2 (gate potential) P13: b plate middle layer 2 (gate pole potential)
P4: plate a underlayer (emitter potential) P14: b plate bottom layer (emitter potential)
P5: a plate insulating layer P15: b plate insulating layer
P6: emitter potential via P16: emitter potential via
P7: gate potential via P17: gate potential via
P8: a-plate gate bare metal region P18: b-plate door pole bare metal area
P9: bare metal region P19 of the a plate emitter: bare metal region of B plate emitter
P10: plate a (gate drive PCB plate) P20: b board (PCB interface board attached to the pipe shell)
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
References to "a plurality" herein include "two" and "more than two".
Please refer to fig. 2, fig. 2 is a schematic diagram of the rigid connection structure of the present invention. As shown in fig. 2, the present invention provides a turn-off thyristor device with split gate drive, comprising: the turn-off thyristor comprises a turn-off thyristor case 11, an auxiliary interface board 12, a gate drive board 13 and a rigid connection structure 14; the turn-off thyristor shell 11 and the auxiliary interface board 12 are connected in a low-inductance integrated connection mode; the gate driver board 13 includes a driver circuit module 131; the accessory interface board 12 and the gate driver board 13 are detachably connected through the connection structure 14, so that the turn-off thyristor case 11 and the gate driver board 13 are separated or combined.
Specifically, the connection between the turn-off thyristor tube shell 11 and the accessory interface board 12 adopts a low-inductance integrated connection structure in the prior art, the turn-off thyristor tube shell and the accessory interface board are fixed when the turn-off thyristor device is mounted on the component and are not detached any more, an interface specially used for connection is processed at one end of the accessory interface board 12, and the board does not contain any circuit element; the gate driver board comprises all circuit function modules driven by the traditional method, and one end of the gate driver board is provided with a special interface for connection; the rigid connection structure 14 directly contacts the accessory interface board 12 and the gate driver board 13 and ensures a reliable low impedance connection.
Referring to fig. 3, fig. 3 is a schematic diagram of a copper-clad structure with low parasitic inductance. In this embodiment, the accessory interface board 12 and the gate driver board 13 are both PCBs, two PCBs share two strong electric potentials to be connected, which are the gate (G) and the emitter (E), and typical electrical parameters are tens of amperes of continuous current capacity, thousands of amperes of microsecond-level instantaneous current capacity, and tens of volts of insulation and withstand voltage. To achieve low parasitic inductance at the junction, special design of the PCB circuit and the copper-laid structure is required. As shown in fig. 3, the PCB boards on both sides of fig. 3 are multi-layer boards (taking four-layer boards as an example), and the gate and emitter potentials are distributed alternately; the two plates are overlapped, through-flow is realized by mutual contact of corresponding exposed metal areas, and different exposed metal areas are respectively connected with the gate electrode potential and the emitter electrode potential of the PCB. The bare metal area can be realized by tin plating or gold immersion and other processes. Enough space is reserved between the two electrode copper-laying areas so as to realize insulation and meet mechanical positioning errors; a large number of through holes are processed near the copper paving area between each layer, so that the mutual through-current capacity between different layers of the PCB multi-layer board is ensured, and short circuit is avoided by staggering the through holes. The distance between each layer of copper layers of the structure is small, obvious current convergence (different from connection modes of wires, cables and the like) does not exist at the connection position, the area enclosed by a loop between a gate pole, an emitter and a turn-off negative voltage capacitor (or a turn-off MOSFET group) is not obviously increased due to direct contact of a PCB, and therefore parasitic inductance can be lower than dozens of pH values to hundreds of pH values.
Referring to fig. 4, fig. 4 is a schematic structural diagram of the first embodiment. As shown in fig. 4, the first connection holes K1 are respectively formed on the overlapping portions of the accessory interface board 12 and the gate driver board 13, and the rigid connection structure 14 includes: and one end of the screw 141 passes through the first connection hole K1 and then is connected with the nut 142, wherein J1 is a bare metal area gate contact of the two PCB plates, and J2 is a bare metal area emitter contact of the two PCB plates.
Specifically, the accessory interface board 12 and the gate driver board 13 are provided with first connection holes K1 for direct fastening with screws 141, and the nuts 142 may be machined directly into the external protective structure of the driver board or may be separate fasteners with threaded structures. Screw quantity, diameter, material all can adjust according to actual fastening force demand in this embodiment, guarantee that contact resistance is less than acceptable value can.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a second embodiment. As shown in fig. 5, the rigid connection structure includes: an upper fastener 143, a lower fastener 144 and two fasteners 145; upper fasteners 143 are disposed above the gate driver plate 13; the lower fastener 144 is disposed below the accessory interface board 12; two fixing members 145 connect the upper fixing member 143 and the lower fixing member 144. Specifically, the accessory interface board and the gate driver board are placed in an up-and-down overlapping manner, strip-shaped fasteners are respectively applied to the upper side and the lower side of the accessory interface board 12 and the gate driver board 13, the two fasteners are fixed with each other, the two fasteners can be high-strength insulating materials or high-strength metals subjected to surface insulation treatment, or conductive metals, the metal and the cathode of the device keep the same potential, and J3 is formed by contacting exposed metal areas of the two PCB boards.
It should be noted that, although the present invention is described by way of example that the fastening member 143 is provided above the gate driving board 13 and the fastening member 144 is provided below the attachment interface board 12, the present invention is not limited thereto, and in practice, the attachment interface board 12 and the gate driving board 13 may be provided between the upper fastening member and the lower fastening member, for example, the upper fastening member 143 may be provided above the attachment interface board 12, and the lower fastening member 144 may be provided below the gate driving board 13.
In order to facilitate the positioning of the PCB, the upper fastening piece in the figure can be processed with a protruding positioning part which is matched with the positioning holes on the two PCBs, thus realizing higher precision. Specifically, the accessory interface board 12 and the gate driver board 13 are respectively provided with at least one first positioning hole K2, in this embodiment, the upper fastening member 143 is further provided with at least one positioning portion 1431, the lower fastening member 144 is also provided with a first positioning hole K2 corresponding to the positioning portion 1431, and the positioning portion 1431 is correspondingly inserted in the first positioning hole K2.
It should be noted that, in this embodiment, the positioning portion 1431 is provided on the upper fastening member 143, but the present invention is not limited thereto, and in another embodiment of the present invention, the positioning portion may be provided on the lower fastening member 144, and then the first positioning hole K2 is provided on the upper fastening member 143, and in yet another embodiment of the present invention, the positioning portions which are all provided for alignment may be provided on the lower fastening member 144 and the upper fastening member 143, and in addition, the present invention is not limited to the shape of the positioning portion.
In this embodiment, the fixing member 145 is a bolt, one of the two bolts is connected to one end of the upper fastening member and one end of the lower fastening member, and the other of the two bolts is connected to the other end of the upper fastening member and the other end of the lower fastening member, wherein the diameter and material of the bolt can be adjusted according to the actual fastening force.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a third embodiment. The turn-off thyristor device shown in fig. 6 is substantially the same as the turn-off thyristor device shown in fig. 5, and therefore the same parts are not described herein again, and different parts will now be described below. As shown in fig. 6, the fixing member 145 is a buckle, one of the two buckles is connected to one end of the upper fastening member 143 and one end of the lower fastening member 144, and the other of the two buckles is connected to the other end of the upper fastening member 143 and the other end of the lower fastening member 144, wherein the shape and material of the buckle can be adjusted according to actual fastening force requirements.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a fourth embodiment. The turn-off thyristor device shown in fig. 7 is substantially the same as the turn-off thyristor device shown in fig. 5, and therefore the same parts are not described herein again, and different parts will now be described below. As shown in fig. 7, the fixing member 145 is an eccentric, one of the two eccentrics is connected to one end of the upper fastening member 143 and one end of the lower fastening member 144, and the other of the two eccentrics is connected to the other end of the upper fastening member 143 and the other end of the lower fastening member 144, wherein the diameter, material and fixing manner of the eccentrics can be adjusted according to actual fastening force requirements.
Please refer to fig. 8, fig. 8 is a schematic diagram of the flexible connection structure of the present invention. As shown in fig. 8, the present invention provides a turn-off thyristor device with split gate drive, comprising: a turn-off thyristor case 11, an accessory interface board 12, a gate drive board 13 and a flexible connection structure 15. The turn-off thyristor device shown in fig. 8 is substantially the same as the turn-off thyristor device shown in fig. 2, and therefore the same parts are not described herein again, and different parts will now be described below.
The basic structure of the connection mode is divided into a turn-off thyristor tube shell 11, an auxiliary interface board 12, a gate drive board 13 and a flexible connection structure 15, as shown in fig. 8, wherein the connection between the turn-off thyristor tube 11 and the auxiliary interface board 12 adopts a low-inductance integrated connection structure in the prior art, the turn-off thyristor tube and the auxiliary interface board 12 are fixed when the assembly of the turn-off thyristor device is installed and are not detached any more, and the auxiliary interface board 12 does not contain any circuit element; the gate driver board 13 includes a conventional driver module 131, one end of which is provided with an interface specially used for connection; the flexible connection structure 15 realizes reliable low-resistance low-inductance electrical connection of the two PCB boards.
It should be noted that in another embodiment of the present invention, the flexible connection structure 15 can also be formed together with the accessory interface board 12.
The scheme needs to design a fixed structure for the gate drive on an external mechanical component, the fixation and the bearing of the gate drive plate are not provided by the turn-off thyristor shell 11, and the gate drive plate and the turn-off thyristor shell are not required to be positioned on the same horizontal plane. The characteristics that usable flexible structure is convenient for buckle when installation and dismantlement change gate pole driven orientation and position, and very big convenient operation promotes adaptability and flexibility by a wide margin.
The accessory interface board 12 and the gate driver board 13 share two strong electric potentials to be connected, namely a gate (G) and an emitter (E), and typical electrical parameters are continuous current capacity of tens of amperes, microsecond instantaneous current capacity of thousands of amperes, and insulation withstand voltage of tens of volts. To achieve a low parasitic impedance at the connection, the distance between the gate and emitter conductors of the flexible portion is as small as possible and the conductor cross-sectional area is as large as possible. No significant current convergence (as distinguished from connection by wires, cables, etc.) occurs between the accessory interface 12, the gate driver board 13, and the flexible connection, so that the parasitic inductance can be below tens to hundreds of pH.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a fifth embodiment. As shown in fig. 9, the accessory interface board 12 includes a first portion 121 and a second portion 122, a second connection hole K3 is respectively opened on the overlapping portion of the first portion 121 and the gate driving board 13, and the flexible connection structure includes: a flexible printed board 151, a screw 152, and a nut 153; a flexible printed board 151 connecting the first portion 121 and the second portion 122; one end of the screw 152 is connected to the nut 153 after passing through the second connection hole K3.
Specifically, a Flexible Printed Circuit (FPC) comprises an upper layer and a lower layer of copper, wherein the upper layer and the lower layer are respectively used as gate electrode and emitter electrode potentials; the first portion 121, the second portion 122 and the connection portion of the flexible board meet the current flowing requirement through dense vias, and simultaneously achieve lower parasitic impedance. The connection between the flexible printed board and the gate driving board 13 may be achieved in various manners not limited to screw fixation, fastener fixation, dedicated interface fixation, and the like.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a sixth embodiment. The turn-off thyristor device shown in fig. 10 is substantially the same as the turn-off thyristor device shown in fig. 9, and therefore the same parts are not described herein again, and different parts will now be described below. As shown in fig. 10, in the present embodiment, the accessory interface board 12 includes a first portion 121 and a second portion 122, and the flexible connection structure 15 includes: an upper fastener 154, a lower fastener 155, a flexible printed board 151, and a fixing member 156; the top fasteners 154 are disposed above the gate driver board 13 and the accessory interface board 12; lower fasteners 155 are provided below the gate driver board 13 and the accessory interface board 12; a flexible printed board 151 connecting the first portion 121 and the second portion 122; a fastener 156 connects the upper fastener 154 and the lower fastener 155.
It should be noted that, although the present invention has been described by taking as an example that the upper fastening member 143 is provided above the gate drive board 13 and the lower fastening member 144 is provided below the first portion of the attachment interface board 12, the present invention is not limited thereto, and in practice, the first portion and the gate drive board 13 may be provided between the upper fastening member and the lower fastening member, for example, the upper fastening member 143 may be provided above the first portion, and the lower fastening member 144 may be provided below the gate drive board 13.
Referring to fig. 11, fig. 11 is a schematic structural diagram of a seventh embodiment. The turn-off thyristor device shown in fig. 11 is substantially the same as the turn-off thyristor device shown in fig. 10, and therefore the same portions are not described herein again, and different portions will now be described below. In this embodiment, the flexible connecting structure 15 includes: a flexible printed board pressing interface 157, a pressing device 158 and a flexible printed board 151; the flexible printed board pressing interface 157 is arranged on the gate electrode driving board 13 and is electrically connected to the gate electrode driving board 13; the pressing device 158 is arranged on the flexible printed board pressing interface 157; one end of the flexible printed board is connected to the accessory interface board 12, and the other end of the flexible printed board 151 is pressed onto the gate driving board 13 through the pressing device 151, wherein the flexible printed board pressing interface 157 has a pin 1571 to electrically connect with the gate driving board 13.
Specifically, in this embodiment, a dedicated interface is adopted to fix a customized double-sided flexible printed board pressing interface, pins are welded on a gate electrode driving PCB, the flexible printed board is inserted into the interface, the flexible printed board is clamped by a pressing device on the interface, and through-flow of the gate electrode and the emitter is realized on the upper and lower surfaces of the flexible printed board respectively. The number and the size of the special interfaces can be adjusted according to practical application occasions, and the operation is convenient on the premise of providing enough pressure.
Referring to fig. 12, fig. 12 is a schematic structural diagram of an eighth embodiment. As shown in fig. 12, in the present embodiment, the flexible connecting structure 15 includes: composite row 159; one end of the composite row 159 is connected to the gate driver board 13 via a fastener 160, and the other end of the composite row 159 is connected to the accessory interface board 12 via a fastener 160. Two PCBs are connected by adopting a double-layer ultrathin composite row with the width close to that of the driving plate. One end of the accessory interface board 12 is interfaced (welded or screwed) with the composite row 159. once secured, the composite row 159 is not removed from the board. The gate drive plate 13 is interfaced at one end with the composite row 159 by a variety of means not limited to screw attachment, fastener attachment, etc., as described in the previous embodiments and will not be repeated here. In this embodiment, the composite row is a double-layer ultrathin composite row, but the present invention is not limited thereto.
To sum up, the utility model has the advantages of it is following:
1. the device is suitable for various occasions requiring replacement and maintenance of the gate drive of the device such as a turn-off thyristor and the like and difficult in device disassembly, and can greatly facilitate the work of designers and maintainers; and can be replaced only for the drive; and meanwhile, the utilization rate of the device is improved.
2. The device structure design modes for providing various gate drive separation respectively have the outstanding advantages that: the rigid contact connection mode has high reliability and low parasitic parameters, and can maximally maintain the original electrical characteristics of the gate drive; the external assembly of flexible connection mode designs in a flexible way, and the dismantlement operation is more convenient.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (14)
1. A turn-off thyristor device having a split gate drive, comprising:
the turn-off thyristor tube shell and the auxiliary interface board are connected by adopting a low-inductance integrated connection mode;
the gate pole driving board comprises a driving circuit module;
and the auxiliary interface board and the gate pole driving board are detachably connected through the connecting structure so as to realize the separation or combination of the turn-off thyristor case and the gate pole driving board.
2. The turn-off thyristor device of claim 1, wherein the connecting structure is a rigid connecting structure.
3. The turn-off thyristor device of claim 2, wherein the accessory interface board and the gate driver board each have a first connection hole formed therein at an overlapping portion thereof, and wherein the rigid connection structure comprises: and one end of the screw penetrates through the first connecting hole and then is connected with the nut.
4. A turn-off thyristor device as claimed in claim 2, wherein the rigid connection structure comprises:
an upper fastener disposed above the gate driver plate;
the lower fastening piece is arranged below the auxiliary interface board;
two fixing pieces connecting the upper fastening piece and the lower fastening piece.
5. The device of claim 4, wherein the accessory interface and the gate driver board are respectively formed with at least a first positioning hole, and the upper fastener and/or the lower fastener are further formed with at least a positioning portion, and the positioning portion is correspondingly formed through the first positioning hole.
6. A turn-off thyristor device as claimed in claim 4 or 5, wherein said fixing members are bolts, one of the two bolts connecting one end of said upper fastening member and one end of said lower fastening member, the other of the two bolts connecting the other end of said upper fastening member and the other end of said lower fastening member.
7. A turn-off thyristor device as claimed in claim 4 or 5, wherein said fixing member is a hasp, one of the two hasps connecting one end of said upper fastening member and one end of said lower fastening member, the other of the two hasps connecting the other end of said upper fastening member and the other end of said lower fastening member.
8. A turn-off thyristor device as claimed in claim 4 or 5, wherein the fixed member is an eccentric, one of the two eccentrics being connected to one end of the upper fastening member and the lower fastening member, the other of the two eccentrics being connected to the other end of the upper fastening member and the lower fastening member.
9. The turn-off thyristor device of claim 1, wherein the connection structure is a flexible connection structure.
10. The turn-off thyristor device of claim 9, wherein said accessory interface board comprises a first portion and a second portion, wherein said first portion and said gate driver board have a second connection hole formed therein, respectively, and wherein said flexible connection structure comprises:
a flexible printed board connecting the first portion and the second portion;
and one end of the screw penetrates through the second connecting hole and then is connected with the nut.
11. The turn-off thyristor device of claim 9, wherein the accessory interface board comprises a first portion and a second portion, the flexible connection structure comprising:
an upper fastener disposed above the gate driver plate;
the lower fastening piece is arranged below the auxiliary interface board;
a flexible printed board connecting the first portion and the second portion;
and a fixing member connecting the upper fastening member and the lower fastening member.
12. The turn-off thyristor device of claim 9, wherein the flexible connection structure comprises:
the flexible printed board compaction interface is arranged on the gate pole driving board and is electrically connected with the gate pole driving board;
the pressing device is arranged on the pressing interface of the flexible printed board;
one end of the flexible printed board is connected to the accessory interface board, the other end of the flexible printed board is pressed on the gate electrode driving board through the pressing device, and the flexible printed board is electrically connected with the accessory interface board and the gate electrode driving board in a low-impedance mode.
13. The turn-off thyristor device of claim 9, wherein the flexible connection structure comprises:
one end of the composite row is connected to the gate pole driving board, and the other end of the composite row is connected to the auxiliary interface board.
14. The turn-off thyristor device of claim 1, wherein said accessory interface board and said gate driver board are each a multi-layer PCB, and wherein said accessory interface board and said gate driver board have a copper-clad structure comprising: the gate pole and the emitter electrode are distributed at intervals, through-flow is realized by mutual contact of corresponding exposed metal areas, and a plurality of through holes are arranged between layers near the copper-paving area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021457402.1U CN212461670U (en) | 2020-07-22 | 2020-07-22 | Turn-off thyristor device with split gate drive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021457402.1U CN212461670U (en) | 2020-07-22 | 2020-07-22 | Turn-off thyristor device with split gate drive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900136A (en) * | 2020-07-22 | 2020-11-06 | 清华大学 | Turn-off thyristor device with split gate drive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900136A (en) * | 2020-07-22 | 2020-11-06 | 清华大学 | Turn-off thyristor device with split gate drive |
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