IGCT power equipment

Abstract

The utility model discloses an IGCT power device comprising a housing and a pressing module, the housing is arranged in the housing, the pressing module comprises a pressing module, an upper support plate, a lower support plate, an abutting member and a deformation assembly, the upper support plate and the lower support plate are both arranged in the housing, the pressing module is arranged between the upper support plate and the lower support plate, and the deformation assembly is arranged between the upper support plate and the lower support plate. The pressing module comprises an IGCT assembly, a liquid cooling assembly and a diode assembly which are stacked with one another, a first insulating part is arranged between the pressing module and the upper supporting plate, a second insulating part is arranged between the pressing module and the lower supporting plate, and the abutting part is connected with the upper supporting plate and the deformation assembly through a movable locking structure. The abutting piece can move on the upper supporting plate so as to be close to and abut against the first insulating piece or away from the first insulating piece, and the abutting piece can drive the deformation assembly to deform when moving on the upper supporting plate. According to the design, the pressing degree of the IGCT assembly is visually presented, and the production efficiency and the production quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronic equipment, in particular to an IGCT power device. Background Art

[0002] IGCT (Integrated Gate Commutated Thyristor) is a semiconductor device widely used in power electronics and power transmission systems. IGCT is a thyristor that combines the characteristics of GTO (Gate Turn Off) thyristor and MOSFET (Metal Oxide Semiconductor Field Effect Transistor), integrating the advantages of these two devices to improve the overall efficiency and performance of high-power applications.

[0003] With the rapid development of new energy sources such as wind energy and solar energy and large-scale energy storage, flexible DC transmission technology based on voltage source converter (VSC) has developed rapidly in recent years. Flexible DC transmission technology is increasingly used in the field of long-distance, large-capacity, and high-voltage transmission. The power unit is the smallest component of the system. In recent years, after IGCT was applied to the commutation device, IGCT devices benefited from their special advantages such as high withstand voltage, low loss, large current, low cost, and high safety, and have broad application prospects in the field of flexible DC transmission. In the current commutation device, it can replace conventional thyristor power electronic switching devices and be used in high-power commutation devices. It has the characteristics of fewer devices and high withstand voltage.

[0004] However, power units using IGCT are still in the development stage, and there are various problems that need to be optimized and solved. For example, in terms of installation structure, IGCT components usually need to be installed in conjunction with diode components, liquid cooling components, etc. The degree of pressing has a certain impact on the IGCT components. In the past, staff could not simply judge the degree of pressing. They needed to use professional instruments to measure or establish a professional pressing production line. The installation production efficiency was low and the cost was high. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an IGCT power device, which intuitively presents the pressing degree of the IGCT component and improves the production efficiency and production quality.

[0006] According to an IGCT power device of the first aspect of the utility model, the embodiment comprises: a shell; a pressing module group, which is placed in the shell, wherein the pressing module group comprises a pressing module, an upper support plate, a lower support plate, an abutment and a deformation assembly, the upper support plate and the lower support plate are both arranged in the shell, the pressing module is arranged between the upper support plate and the lower support plate, the pressing module comprises an IGCT assembly, a liquid cooling assembly and a diode assembly stacked on each other, a first insulating member is arranged between the pressing module and the upper support plate, a second insulating member is arranged between the pressing module and the lower support plate, the abutment is respectively connected to the upper support plate and the deformation assembly through a movable locking structure, the abutment can move on the upper support plate to approach or move away from the first insulating member, and the abutment can drive the deformation assembly to deform when it moves on the upper support plate.

[0007] An IGCT power device according to an embodiment of the utility model has at least the following beneficial effects:

[0008] In the IGCT power equipment of the utility model, when the pressing module is assembled, the IGCT component, the liquid cooling component and the diode component are stacked on each other to form a pressing module, and the pressing module is placed in the second insulating member located on the lower support plate, and then the abutment member is pressed against the top of the pressing module through the first insulating member. The staff acts on the abutment member, and the abutment member can move on the upper support plate to approach and press the first insulating member, thereby pressing the pressing module. In the process of the abutment member moving, the deformation component will also be deformed. The staff can detect the deformation amount of the deformation component by naked eyes or a simple distance measuring instrument, and can judge the pressure applied to the pressing module, thereby meeting the production requirements. No special pressing equipment is required to perform the pressing operation, which saves costs. The design intuitively presents the pressing degree of the IGCT component, improves production efficiency and production quality.

[0009] According to some embodiments of the utility model, the deformation component includes a mounting pressure plate and an elastic member, the abutment member is connected to the mounting pressure plate through the movable locking structure, the elastic member is located between the mounting pressure plate and the upper support plate, and when the abutment member moves on the upper support plate, it can drive the mounting pressure plate to approach or move away from the upper support plate to press the elastic member to cause the elastic member to deform.

[0010] According to some embodiments of the utility model, the abutment member is in the shape of an elongated strip, and the movable locking structure includes an external thread structure arranged on the abutment member, a first connecting hole arranged on the upper support plate, and a second connecting hole arranged on the mounting pressure plate, the abutment member is passed through the first connecting hole and the second connecting hole, and the external thread structure is connected to the second connecting hole.

[0011] According to some embodiments of the present invention, the end of the abutting member is an arc-shaped surface, the first insulating member is provided with an arc-shaped groove, and the end of the abutting member is inserted into the arc-shaped groove to press the first insulating member.

[0012] According to some embodiments of the utility model, a first liquid storage tank is arranged on the upper surface of the lower support plate below the pressing module, a second liquid storage tank is arranged on the bottom surface of the outer shell, and a guide structure is arranged on the lower support plate, and the guide structure is used to direct the liquid in the first liquid storage tank to flow toward the second liquid storage tank.

[0013] According to some embodiments of the present invention, the guide structure includes a guide port disposed on a side edge of the first liquid storage tank and connected to the first liquid storage tank, and the guide port is located above the second liquid storage tank.

[0014] According to some embodiments of the present invention, the IGCT component includes a first IGCT component and a second IGCT component, the liquid cooling component includes a plurality of liquid cooling heat exchange components, the diode component includes a first diode component and a second diode component, the first IGCT component, the second IGCT component, the first diode component and the second diode component are stacked in sequence from top to bottom, and the liquid cooling heat exchange component is arranged between the first insulating component and the first IGCT component, between the first IGCT component and the second IGCT component, between the second IGCT component and the first diode component, between the first diode component and the second diode component, and between the second diode component and the second insulating component.

[0015] According to some embodiments of the utility model, each of the liquid-cooled heat exchange components is provided with a liquid inlet and a liquid outlet, a liquid inlet main pipe and a liquid outlet main pipe are provided in the shell, the liquid inlet main pipe is connected to a plurality of liquid inlet branches, the liquid inlet branches are docked with the liquid inlets one-to-one, the liquid outlet main pipe is connected to a plurality of liquid outlet branches, the liquid outlet branches are docked with the liquid outlets one-to-one, and the connection position of the liquid inlet main pipe and the liquid inlet branches and the projection of the connection position of the liquid outlet main pipe and the liquid outlet branches toward the second liquid storage tank are both located in the second liquid storage tank.

[0016] According to some embodiments of the utility model, a control board assembly, a bypass switch assembly, a bus capacitor assembly and an absorption circuit assembly are further provided in the casing, the IGCT assembly, the diode assembly, the bus capacitor assembly and the absorption circuit assembly are connected through a busbar assembly, the control board assembly and the bypass switch assembly are connected to the IGCT assembly, the casing is in the shape of an elongated strip, the control board assembly and the bypass switch assembly are located at the front end of the casing, the bus capacitor assembly is located at the rear end of the casing, and the pressing module and the absorption circuit assembly are located between the bus capacitor assembly and the control board assembly.

[0017] According to some embodiments of the utility model, a liquid inlet connection port and a liquid outlet connection port are provided on the front end surface of the shell, the liquid inlet main pipe is connected to the liquid inlet connection port, and the liquid outlet main pipe is connected to the liquid outlet connection port.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a three-dimensional schematic diagram of one embodiment of the IGCT power device of the utility model;

[0021] Figure 2 This is a left side internal structure diagram of one embodiment of the IGCT power device of the utility model;

[0022] Figure 3 This is a right side internal structure diagram of one embodiment of the IGCT power device of the utility model;

[0023] Figure 4 It is a three-dimensional schematic diagram of the pressing module;

[0024] Figure 5 A cross-sectional view of the press-fit die set.

[0025] Reference numerals:

[0026] Shell 100; upper panel 110; middle panel 120; lower panel 130; front frame shell 140; middle frame shell 150; rear frame shell 160; liquid inlet connection port 170; liquid outlet connection port 180; second liquid storage tank 190; press-fit module 200; press-fit module 210; first IGCT component 211; second IGCT component 212; liquid cooling heat exchange component 213; first diode component 214; second diode component 215; upper support plate 220; lower support plate 230; first storage tank Liquid tank 231; guide port 232; abutment member 240; arc surface 241; deformation component 250; mounting plate 251; elastic member 252; first insulating member 260; arc groove 261; second insulating member 270; power module 300; liquid inlet main pipe 410; liquid inlet branch pipe 420; liquid outlet main pipe 430; liquid outlet branch pipe 440; control board assembly 510; bypass switch assembly 520; bus capacitor assembly 530; absorption circuit assembly 540; busbar assembly 550. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "liquid level", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-5 As shown, according to an embodiment of the first aspect of the utility model, an IGCT power device includes a housing 100 and a pressing module 200, the housing 100 is placed in the housing 100, wherein the pressing module 200 includes a pressing module 210, an upper support plate 220, a lower support plate 230, an abutment 240 and a deformation component 250, the upper support plate 220 and the lower support plate 230 are both arranged in the housing 100, the pressing module 210 is arranged between the upper support plate 220 and the lower support plate 230, and the pressing module 210 includes IGCT components stacked on each other. , liquid cooling components and diode components, a first insulating member 260 is arranged between the pressing module 210 and the upper support plate 220, a second insulating member 270 is arranged between the pressing module 210 and the lower support plate 230, the abutment member 240 is respectively connected to the upper support plate 220 and the deformation component 250 through a movable locking structure, the abutment member 240 can move on the upper support plate 220 to approach or move away from the first insulating member 260, and the abutment member 240 can drive the deformation component 250 to deform when moving on the upper support plate 220.

[0032] Among them, in order to improve the explosion-proof level of the IGCT power equipment, the housing 100 adopts a fully enclosed design. The housing 100 can be in a long strip shape, such as a regular shape such as a cuboid, or a long strip-shaped special-shaped structure can also be adopted. The front of the housing 100 is respectively provided with an upper panel 110, a middle panel 120 and a lower panel 130 spliced ​​in sequence from top to bottom, and a bottom plate is provided at the middle bottom of the housing 100. The front frame shell 140, the middle frame shell 150 and the rear frame shell 160 are spliced ​​in sequence from the front to the rear end of the middle position of the housing 100. The front frame shell 140, the middle frame shell 150 and the rear frame shell 160 are all connected to the bottom plate, and the rear end of the housing 100 is provided with a back plate connected to the rear frame shell 160 and the bottom plate. The fully enclosed design can effectively isolate even if an explosion occurs, reducing the damage and harm to other equipment adjacent to the IGCT power equipment.

[0033] The pressing module 200 is placed vertically near the middle of the shell 100. A power module 300 can be arranged above the pressing module 200. The power module 300 can be connected to an external power supply and convert the electric energy provided by the external power supply, and then provide driving power for the IGCT component to meet the power demand of the IGCT.

[0034] In the IGCT power device of the present invention, when the pressing module 200 is assembled, the IGCT component, the liquid cooling component and the diode component are stacked on each other to form a pressing module 210. The pressing module 210 is placed in the second insulating member 270 located on the lower support plate 230, and then the abutment member 240 is pressed against the top of the pressing module 210 through the first insulating member 260. The staff acts on the abutment member 240, and the abutment member 240 can move on the upper support plate 220 to approach and press the first insulating member 260, thereby pressing the pressing module 210. In the process of the movement of the abutment member 240, the deformation component 250 will also be deformed. The staff can detect the deformation amount of the deformation component 250 by the naked eye or a simple distance measuring instrument, and can judge the pressure applied to the pressing module 210, thereby meeting the production requirements. No special crimping equipment is required to perform the crimping operation, which saves costs. The design intuitively presents the degree of crimping of the IGCT component, improves production efficiency and production quality.

[0035] In some embodiments of the present invention, Figure 4 , 5 As shown, the deformation assembly 250 includes a mounting pressure plate 251 and an elastic member 252. The abutment member 240 is connected to the mounting pressure plate 251 through the movable locking structure. The elastic member 252 is located between the mounting pressure plate 251 and the upper support plate 220. When the abutment member 240 moves on the upper support plate 220, it can drive the mounting pressure plate 251 to approach or move away from the upper support plate 220 to press the elastic member 252 to deform the elastic member 252.

[0036] When the abutment member 240 applies force toward the first insulating member 260, the abutment member 240 also applies force to the mounting plate 251 through the movable locking structure. The mounting plate 251 squeezes the elastic member 252, causing the elastic member 252 to undergo elastic deformation. The staff can roughly determine the pressure by observing the deformation of the elastic member 252.

[0037] Specifically, the elastic member 252 can be a spring, a rubber column or a disc spring. For example, when the elastic member 252 is a disc spring, the abutment member 240 drives the mounting pressure plate 251 to squeeze the disc spring. The pressure size can be roughly determined by measuring the moving distance of the abutment member 240 and combining the parameters of the disc spring. When the abutment member 240 moves away from the first insulating member 260, the elastic member 252 can automatically restore the elastic deformation.

[0038] In some embodiments of the utility model, the abutment 240 is in the shape of an elongated strip, and the movable locking structure includes an external thread structure arranged on the abutment 240, a first connecting hole arranged on the upper support plate 220, and a second connecting hole arranged on the mounting pressure plate 251, the abutment 240 is passed through the first connecting hole and the second connecting hole, and the external thread structure is connected to the second connecting hole.

[0039] Specifically, the abutment 240 can be a conventional adjusting bolt, which is connected to the second connecting hole through a threaded structure. The mounting pressure plate 251 is provided with a limiting column, which is also passed through the first connecting hole. The first connecting hole limits the movement of the mounting pressure plate 251, so that the mounting pressure plate 251 can also move along the hole direction of the first connecting hole but will not rotate. The mounting pressure plate 251 is used to install the receiving disc spring. Therefore, when the staff rotates the adjusting bolt, the end of the adjusting bolt used to press the first insulating member 260 will extend, and the mounting pressure plate 251 will move toward the upper support plate 220 to squeeze the elastic member 252.

[0040] In some embodiments of the present invention, Figure 5 As shown, the end of the abutting member 240 is an arc-shaped surface 241 , and the first insulating member 260 is provided with an arc-shaped groove 261 , and the end of the abutting member 240 is inserted into the arc-shaped groove 261 to press the first insulating member 260 .

[0041] The first insulating member 260 and the second insulating member 270 can both be selected from materials with good insulating properties and processed into a gasket shape. The end of the abutment 240 is made into an arc surface 241, and the end of the abutment 240 is inserted into the arc groove 261. During the rotation of the abutment 240, the arc surface 241 is adapted to the arc groove 261, reducing the probability of damage to the abutment 240 and the first insulating member 260.

[0042] In some embodiments of the present invention, since the coolant in the liquid cooling assembly may leak, the coolant may drip into the device below the pressing module 200, which may cause leakage and short circuit risks. Figure 2 , 4 As shown, a first liquid storage tank 231 is disposed on the upper surface of the lower support plate 230 below the pressing module 210, a second liquid storage tank 190 is disposed on the bottom surface of the housing 100, and the lower support plate 230 is provided with a guide structure for directing the liquid in the first liquid storage tank 231 to flow toward the second liquid storage tank 190.

[0043] A first liquid storage tank 231 is first set below the pressing module 210. When the coolant drips, it will first gather in the first liquid storage tank 231 and will not drip into the devices below the pressing module 200. Then the coolant will flow from the first liquid storage tank 231 through the guide structure to the second liquid storage tank 190 located at the bottom of the shell 100, thereby effectively preventing the coolant from contaminating other devices and reducing the risk of causing leakage short circuits.

[0044] In some embodiments of the present invention, Figure 4 As shown, the guide structure includes a guide port 232 arranged on the side edge of the first liquid storage tank 231 and connected to the first liquid storage tank 231, and the guide port 232 is located above the second liquid storage tank 190. The coolant dripping on the first liquid storage tank 231 can drip from the guide port 232 and fall into the second liquid storage tank 190. It should be noted that in the area from the bottom of the guide port 232 to the second liquid storage tank 190, no other devices that hinder the dripping of the coolant are set.

[0045] A drain port connected to the second liquid storage tank 190 may be provided at the rear end of the housing 100 . The drain port may be connected to a device specifically for collecting coolant through a pipeline, so as to recover the coolant.

[0046] In some embodiments of the present invention, Figure 4 , 5 As shown, the IGCT component includes a first IGCT component 211 and a second IGCT component 212, the liquid cooling component includes a plurality of liquid cooling heat exchange components 213, the diode component includes a first diode component 214 and a second diode component 215, the first IGCT component 211, the second IGCT component 212, the first diode component 214 and the second diode component 215 are stacked in sequence from top to bottom, and the liquid cooling heat exchange component 213 is arranged between the first insulating component 260 and the first IGCT component 211, between the first IGCT component 211 and the second IGCT component 212, between the second IGCT component 212 and the first diode component 214, between the first diode component 214 and the second diode component 215, and between the second diode component 215 and the second insulating component 270.

[0047] The first IGCT component 211 and the second IGCT component 212 can both be thyristors that combine the characteristics of a GTO thyristor and a MOSFET, and the liquid-cooled heat exchange component 213 uses a shell made of a material with good thermal conductivity and insulation properties to form a heat exchange flow channel inside, and the coolant flows in the heat exchange flow channel. The first IGCT component 211, the second IGCT component 212, the first diode component 214 and the second diode component 215 are all close to their respective adjacent liquid-cooled heat exchange components 213 during the pressing process, and the heat dissipated by the first IGCT component 211, the second IGCT component 212, the first diode component 214 and the second diode component 215 is transferred to the coolant through the liquid-cooled heat exchange component 213, and the flowing coolant thereby realizes the heat dissipation function.

[0048] In some embodiments of the present invention, Figure 2 , 3 As shown, each of the liquid-cooled heat exchange components 213 is provided with a liquid inlet and a liquid outlet, and a liquid inlet main pipe 410 and a liquid outlet main pipe 430 are provided in the shell 100, the liquid inlet main pipe 410 is connected to a plurality of liquid inlet branches 420, and the liquid inlet branches 420 are docked with the liquid inlets in a one-to-one correspondence, the liquid outlet main pipe 430 is connected to a plurality of liquid outlet branches 440, and the liquid outlet branches 440 are docked with the liquid outlets in a one-to-one correspondence, and the connection positions of the liquid inlet main pipe 410 and the liquid inlet branches 420 and the connection positions of the liquid outlet main pipe 430 and the liquid outlet branches 440 are projected toward the second liquid storage tank 190, both of which are located in the second liquid storage tank 190.

[0049] There are multiple liquid-cooled heat exchange components 213, and they are located at different heights. The liquid inlet main pipe 410 and the liquid outlet main pipe 430 can be placed vertically on both sides of the pressing module 210. The liquid inlet branch pipes 420 are distributed at different heights and are connected to the liquid inlet port one by one. Similarly, the liquid outlet branch pipes 440 are distributed at different heights and are connected to the liquid outlet port one by one, so that the cooling efficiency of each liquid path is roughly the same and will not affect each other, which can meet the heat dissipation requirements of the first IGCT component 211, the second IGCT component 212, the first diode component 214 and the second diode component 215.

[0050] Furthermore, the projections of the connection positions of the liquid inlet main pipe 410 and the liquid inlet branch pipe 420 and the connection positions of the liquid outlet main pipe 430 and the liquid outlet branch pipe 440 toward the second liquid storage tank 190 are both located in the second liquid storage tank 190. Even if the coolant leaks, the coolant will drip into the second liquid storage tank 190, reducing the risk of contaminating other devices and causing leakage short circuits.

[0051] In some embodiments of the utility model, a control board assembly 510, a bypass switch assembly 520, a bus capacitor assembly 530 and an absorption circuit assembly 540 are further provided in the housing 100, the IGCT assembly, the diode assembly, the bus capacitor assembly 530 and the absorption circuit assembly 540 are connected via a busbar assembly 550, the control board assembly 510 and the bypass switch assembly 520 are connected to the IGCT assembly, the housing 100 is in a long strip shape, the control board assembly 510 and the bypass switch assembly 520 are located at the front end of the housing 100, the bus capacitor assembly 530 is located at the rear end of the housing 100, and the pressing module 200 and the absorption circuit assembly 540 are located between the bus capacitor assembly 530 and the control board assembly 510.

[0052] Specifically, Figure 2 , 3 As shown, the absorption circuit component 540 includes components such as inductance, resistance, capacitance, and diode. The absorption circuit component 540 is located between the pressing module 200 and the busbar capacitance component 530. The control board component 510 and the bypass switch component 520 can be located directly in front of the pressing module 200. The control board component 510 includes a processor such as an MCU or a CPU and an auxiliary circuit, which can output control instructions to the IGCT component to control the on-off operation of the IGCT. The bypass switch component 520 can include a bypass drive board and a bypass The switch component is connected in parallel with the output end of the IGCT power device. The bypass driving board is used to control the on and off of the bypass switch component. The bypass switch component is arranged below the control board assembly 510 and placed horizontally. There are multiple busbar assemblies 550, including a laminated busbar and a transmission busbar. One end of the transmission busbar is connected to the liquid cooling assembly, and the other end of the transmission busbar extends out of the housing 100 as a power input and output port. The laminated busbar is used to connect the absorption circuit assembly 540, the bus capacitor assembly 530, the IGCT assembly and the diode assembly, etc.

[0053] In some embodiments of the present invention, Figure 1 As shown, the front end surface of the housing 100 is provided with a liquid inlet connection port 170 and a liquid outlet connection port 180, the liquid inlet main pipe 410 is connected to the liquid inlet connection port 170, and the liquid outlet main pipe 430 is connected to the liquid outlet connection port 180, so as to facilitate the access to the cooling liquid supply source and the recovery source.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. An IGCT power device, characterized in that: include: shell; A pressing module is placed in the shell, wherein the pressing module includes a pressing module, an upper support plate, a lower support plate, an abutment and a deformation component, the upper support plate and the lower support plate are both arranged in the shell, the pressing module is arranged between the upper support plate and the lower support plate, the pressing module includes an IGCT component, a liquid cooling component and a diode component stacked on each other, a first insulating component is arranged between the pressing module and the upper support plate, a second insulating component is arranged between the pressing module and the lower support plate, the abutment is respectively connected to the upper support plate and the deformation component through a movable locking structure, the abutment can move on the upper support plate to approach or move away from the first insulating component, and the abutment can drive the deformation component to deform when it moves on the upper support plate.

2. An IGCT power device according to claim 1, characterized in that: The deformation component includes a mounting pressure plate and an elastic member, the abutment member is connected to the mounting pressure plate through the movable locking structure, the elastic member is located between the mounting pressure plate and the upper support plate, and when the abutment member moves on the upper support plate, it can drive the mounting pressure plate to approach or move away from the upper support plate to press the elastic member to deform the elastic member.

3. An IGCT power device according to claim 2, characterized in that: The abutment member is in the shape of an elongated strip, and the movable locking structure includes an external thread structure arranged on the abutment member, a first connecting hole arranged on the upper support plate, and a second connecting hole arranged on the mounting pressure plate. The abutment member is passed through the first connecting hole and the second connecting hole, and the external thread structure is connected to the second connecting hole.

4. An IGCT power device according to claim 3, characterized in that: The end of the abutting member is an arc-shaped surface, the first insulating member is provided with an arc-shaped groove, and the end of the abutting member is inserted into the arc-shaped groove to press the first insulating member.

5. The IGCT power device according to claim 1, characterized in that: A first liquid storage tank is arranged on the upper surface of the lower support plate below the pressing module, a second liquid storage tank is arranged on the bottom surface of the shell, and a guide structure is arranged on the lower support plate, and the guide structure is used to direct the liquid in the first liquid storage tank to flow toward the second liquid storage tank.

6. An IGCT power device according to claim 5, characterized in that: The guide structure includes a guide port which is arranged on a side edge of the first liquid storage tank and communicates with the first liquid storage tank, and the guide port is located above the second liquid storage tank.

7. The IGCT power device according to claim 5, characterized in that: The IGCT component includes a first IGCT component and a second IGCT component, the liquid cooling component includes a plurality of liquid cooling heat exchange components, the diode component includes a first diode component and a second diode component, the first IGCT component, the second IGCT component, the first diode component and the second diode component are stacked in sequence from top to bottom, and the liquid cooling heat exchange component is arranged between the first insulating component and the first IGCT component, between the first IGCT component and the second IGCT component, between the second IGCT component and the first diode component, between the first diode component and the second diode component, and between the second diode component and the second insulating component.

8. An IGCT power device according to claim 7, characterized in that: Each of the liquid-cooled heat exchange components is provided with a liquid inlet and a liquid outlet. A liquid inlet main pipe and a liquid outlet main pipe are provided in the shell. The liquid inlet main pipe is connected to a plurality of liquid inlet branches, and the liquid inlet branches are docked with the liquid inlets in a one-to-one correspondence. The liquid outlet main pipe is connected to a plurality of liquid outlet branches, and the liquid outlet branches are docked with the liquid outlets in a one-to-one correspondence. The connection position of the liquid inlet main pipe and the liquid inlet branch pipe and the connection position of the liquid outlet main pipe and the liquid outlet branch pipe are projected toward the second liquid storage tank and are both located in the second liquid storage tank.

9. An IGCT power device according to claim 8, characterized in that: A control board assembly, a bypass switch assembly, a bus capacitor assembly and an absorption circuit assembly are also arranged in the shell. The IGCT assembly, the diode assembly, the bus capacitor assembly and the absorption circuit assembly are connected via a busbar assembly. The control board assembly and the bypass switch assembly are connected to the IGCT assembly. The shell is in the shape of an elongated strip. The control board assembly and the bypass switch assembly are located at the front end of the shell, the bus capacitor assembly is located at the rear end of the shell, and the pressing module and the absorption circuit assembly are located between the bus capacitor assembly and the control board assembly.

10. An IGCT power device according to claim 9, characterized in that: The front end surface of the shell is provided with a liquid inlet connection port and a liquid outlet connection port, the liquid inlet main pipe is butted against the liquid inlet connection port, and the liquid outlet main pipe is butted against the liquid outlet connection port.

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