CN112701877A

CN112701877A - Converter module and converter

Info

Publication number: CN112701877A
Application number: CN201911008133.2A
Authority: CN
Inventors: 李超; 范伟; 黄南; 黄长强; 彭凯; 蒋云富
Original assignee: CRRC Zhuzhou Institute Co Ltd
Current assignee: CRRC Zhuzhou Institute Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2021-04-23
Anticipated expiration: 2039-10-22
Also published as: CN112701877B

Abstract

The invention discloses a converter module, which comprises a supporting seat and an air duct, wherein the supporting seat is provided with an accommodating groove and a first through hole communicated with the accommodating groove, the first through hole is positioned on the top wall of the supporting seat, the air duct is positioned in the accommodating groove and is connected with the supporting seat, the air duct is provided with a second through hole communicated with the first through hole, a radiator is fixed on the supporting seat, the first through hole and the second through hole are used for avoiding the installation surface of a power device on the radiator, and the air duct is used for accommodating fins of the radiator and is connected with an external radiator fan and an air outlet for radiating the power device. Meanwhile, due to the combination of the radiator and the air duct, the distance between the air duct and the fins of the radiator is reduced, the air quantity loss is reduced, and the radiating efficiency is improved. The invention also discloses a converter.

Description

Converter module and converter

Technical Field

The invention relates to the technical field of electronic equipment, in particular to a converter module and a converter.

Background

The converter module is a core component of the converter, and basically, heat dissipation of semiconductor devices in the converter module needs to be provided with a radiator. With the continuous increase of the power of the converter module, a measure of forced air cooling is often adopted to ensure the heat dissipation requirement of the module. At present, the requirements of light weight and low noise are increasingly emphasized by the current transformer. However, the noise of the fan used in a high power forced air cooled inverter is likely to exceed the noise requirements of the inverter. Therefore, the air duct design of the converter module not only ensures the heat dissipation effect of the radiator, but also needs to have better shock absorption and noise reduction functions.

The current transformer module generally comprises a semiconductor device, a heat sink and other elements, wherein the heat sink comprises a heat sink base plate and heat sink fins. The air duct of converter module sets up in converter module rear side, and the radiator fin sets up in interior, and the fan sets up in air duct one end, forces the air current to flow and take away the heat in the air duct through the fan, guarantees the heat dissipation needs.

The air duct of the existing converter module is directly installed in the cabinet body, and the converter module and the air duct are installed for multiple times, so that the air duct is deformed due to contact with the radiator fins of the converter module, the installed hole positions deviate, and the heat radiation performance of the air duct and the installation reliability can be reduced in the using process. And the air duct is too far away from the radiator fins of the converter module, so that part of air quantity in the air duct does not pass through the radiator fins, the air quantity is wasted, and the heat radiation performance is reduced.

In addition, the existing aluminum air duct is arranged on the radiator of the converter module, the air duct is directly connected with the radiator, and the problem that the aluminum air duct is soft in material and cannot bear the weight of the module and the vibration impact on the locomotive in the running process to cause deformation is not considered. However, the air duct is made of steel materials, so that the converter module is heavy and weak in heat dissipation capacity.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a converter module and a converter, so as to solve the problems of low heat dissipation performance, heavy weight and weak air duct strength of the converter module in the prior art.

The purpose of the invention is realized by the following technical scheme:

the invention provides a converter module, which comprises a supporting seat and an air duct, wherein the supporting seat is provided with an accommodating groove and a first through hole communicated with the accommodating groove, the first through hole is positioned on the top wall of the supporting seat, the air duct is positioned in the accommodating groove and is connected with the supporting seat, the air duct is provided with a second through hole communicated with the first through hole, the air duct is of a hollow structure and is used for accommodating a fin of a radiator, a power device on the converter module penetrates through the first through hole and the second through hole and is connected with the radiator, and the power device is connected with the supporting seat through the radiator.

Further, the converter module also comprises a support beam, the support beam is connected with the support seat, and the support beam is used for mounting a capacitor assembly on the converter module.

Further, this a supporting beam includes left beam, right beam and connects at the upper end of this left beam and the crossbeam of the upper end of this right beam, and the both ends at this roof are connected respectively to the lower extreme of this left beam and the lower extreme of this right beam.

Further, all be equipped with the first mounting hole that is used for installing this electric capacity subassembly on this left beam and this right beam, the both ends of this electric capacity subassembly are connected with this left beam and this right beam respectively.

Furthermore, the support seat is made of stainless steel, and the air duct and the support beam are made of aluminum.

Furthermore, flanges are arranged on two side walls of the supporting seat, and the flanges are turned over towards one side far away from the air duct.

Furthermore, the bottom of the supporting seat is provided with a reinforcing beam, and the reinforcing beam is respectively connected with the flanges at two sides of the supporting seat.

Furthermore, a plurality of second mounting holes are further formed in the top wall of the supporting seat, and are located on the periphery of the first through hole and used for mounting the air duct, the fins of the radiator and the power device.

Further, this wind channel includes casing, lower casing and sets up the strengthening rib on this casing and this casing down, and this casing and this inferior valve body coupling form the ventilation hole on should going up, are equipped with the wind-break piece in this ventilation hole, and this wind-break piece is used for controlling the wind direction in this ventilation hole.

The invention also provides a current transformer, which comprises the current transformer module.

The invention has the beneficial effects that: the converter module includes supporting seat and wind channel, the supporting seat be equipped with the holding tank and with the first through-hole of holding tank intercommunication, first through-hole is located the roof of supporting seat, the wind channel is located the holding tank and with supporting connection, be equipped with the second through-hole with first through-hole intercommunication on the wind channel, the wind channel is hollow structure and is used for holding the fin of radiator, the last power device of converter module passes first through-hole, the second through-hole is connected with the radiator, power device passes through radiator and supporting connection. According to the invention, the air duct is arranged in the accommodating groove of the supporting seat, and the whole weight of the converter module is borne by the supporting seat, so that the deformation and the installation position deviation of the air duct after bearing the weight are avoided, and the reliability of the air duct is ensured. Meanwhile, due to the combination of the radiator and the air duct, the distance between the air duct and the fins of the radiator is reduced, the air quantity loss is reduced, and the radiating efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of a current transformer module according to the present invention;

FIG. 2 is a schematic view of a three-dimensional split structure of the support base of the present invention;

FIG. 3 is a schematic diagram of a front view of a converter module according to the present invention;

FIG. 4 is a left side view of the current transformer module of the present invention;

fig. 5 is a schematic top view of a current transformer module according to the present invention;

FIG. 6 is a schematic bottom view of a current transformer module according to the present invention;

fig. 7 is a schematic front view of a current transformer module with a heat sink, power device and capacitor assembly according to the present invention.

In the figure: the support comprises a support seat 10, a receiving groove 101, a first through hole 102, a top wall 103, a side wall 104, a second mounting hole 105, a flange 11, a reinforcing beam 12 and a mounting bracket 13; the air duct 20, the second through hole 201, the vent hole 202, the upper shell 21, the lower shell 22, the reinforcing ribs 23 and the wind-blocking sheets 24; the support beam 30, the first mounting hole 301, the left beam 31, the right beam 32, and the cross beam 33; a heat sink 40; a power device 50; a capacitive component 60.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the converter module and the converter according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:

fig. 1 is a schematic perspective view of a converter module according to the present invention, fig. 2 is a schematic perspective exploded view of a support base according to the present invention, fig. 3 is a schematic front view of the converter module according to the present invention, fig. 4 is a schematic left view of the converter module according to the present invention, fig. 5 is a schematic top view of the converter module according to the present invention, fig. 6 is a schematic bottom view of the converter module according to the present invention, and fig. 7 is a schematic front view of the converter module according to the present invention, in which a heat sink, a power device, and a.

As shown in fig. 1 to 7, the converter module provided by the present invention includes a supporting base 10, an air duct 20 and a supporting beam 30, wherein the supporting base 10 is provided with an accommodating groove 101 and a first through hole 102 communicated with the accommodating groove 101, the first through hole 102 is located on a top wall 103 of the supporting base 10, the air duct 20 is located in the accommodating groove 101 and connected with the supporting base 10, the air duct 20 is provided with a second through hole 201 communicated with the first through hole 102, the supporting beam 30 is connected with the supporting base 10, the supporting beam 30 is used for mounting a capacitor assembly 60 on the converter module, the air duct 20 is a hollow structure and is used for accommodating a fin of a heat sink 40 (fig. 7), a power device 50 (e.g. an insulated gate bipolar transistor, an IGBT, an insulated gate bipolar transistor) on the converter module passes through the first through hole 102 and the second through hole 201 and is connected with the heat sink 40, the power device 50 is, that is, the heat sink 40 is connected to the support base 10, the power device 50 is connected to the heat sink 40, and the power device 50 may not be connected to the support base 10. Preferably, the preparation material of supporting seat 10 includes the stainless steel, and the preparation material of wind channel 20 and supporting beam 30 includes aluminium, and wind channel 20 and supporting beam 30 adopt aluminium preparation, can improve heat-sinking capability to reduce weight, and supporting seat 10 adopts the stainless steel preparation, and intensity is big, and the supporting effect is better, has effectively avoided the problem that wind channel 20 warp. Of course, in other embodiments, the capacitor assembly 60 on the current transformer module can be installed at other positions of the current transformer module, and the support beam 30 is not required to be provided, and the support base 10 is used to bear the weight of the power device 50 and the heat sink 40, which is not limited to this.

The support beam 30 includes a left beam 31, a right beam 32, and a cross beam 33 connected to an upper end of the left beam 31 and an upper end of the right beam 32, a lower end of the left beam 31 and a lower end of the right beam 32 are connected to both ends of the top wall 103, respectively, and the cross beam 33 is connected to the upper end of the left beam 31 and the upper end of the right beam 32 by screws. The left beam 31 and the right beam 32 are both provided with a first mounting hole 301 for mounting the capacitor assembly 60, and two ends of the capacitor assembly 60 are respectively connected with the left beam 31 and the right beam 32. The left beam 31 and the right beam 32 are respectively provided with 4 first mounting holes 301, and the capacitor assembly 60 is connected with the left beam 31 and the right beam 32 through screws. In this embodiment, two mounting brackets 13 (fig. 3) are disposed on the top wall 103 of the supporting seat 10, the two mounting brackets 13 can be welded on the top wall 103, and of course, the mounting brackets 13 can also be connected with the top wall 103 through screws. The two mounting brackets 13 are respectively positioned at the left side and the right side of the first through hole 102, each mounting bracket 13 is provided with 4 through holes, the lower end of the left beam 31 is assembled with the mounting bracket 13 at the left side through screws, and the lower end of the right beam 32 is assembled with the mounting bracket 13 at the right side through screws. Of course, in other embodiments, the lower ends of the left beam 31 and the right beam 32 may be respectively provided with flanges, and the left beam 31 and the right beam 32 are respectively connected with the top wall 103 of the supporting seat 10 through the flanges, but not limited thereto.

The two side walls 104 of the support seat 10 are provided with flanges 11, the flanges 11 are folded towards the side away from the air duct 20, the flanges 11 can be integrally formed with the body of the support seat 10, and of course, the flanges 11 are also welded with the body of the support seat 10. The bottom of the supporting seat 10 is provided with a reinforcing beam 12, the reinforcing beam 12 is respectively connected with the flanges 11 at two sides of the supporting seat 10, two ends of the reinforcing beam 12 are connected with the flanges 11 at two sides through screws or welded, and the middle part of the reinforcing beam 12 can also be connected with the air duct 20. The flanging 11 is provided with a mounting hole, and the converter module is mounted on the converter through the mounting hole of the flanging 11. In this embodiment, the supporting seat 10 forms a receiving groove 101 for receiving the air duct 20 by two side walls 104 and a top wall 103, and the supporting seat 10 is U-shaped as a whole. Of course, in other embodiments, the supporting seat 10 may further include a bottom wall, and the two side walls 104, the top wall 103 and the bottom wall form a receiving cavity for receiving the air duct 20, which is not limited thereto.

As shown in fig. 1, a plurality of second mounting holes 105 are formed in the top wall 103 of the support base 10, the plurality of second mounting holes 105 are located at the periphery of the first through hole 102 and are used for mounting the air duct 20 and the heat sink 40 (fins and the heat sink are integrally processed, and a power device is mounted on the heat sink), the air duct 20 is connected with the top wall 103 of the support base 10 through the mounting holes of the heat sink 40 and the second mounting holes 105, and the power device 50 is placed on the upper surface of the top wall 103 of the support base 10 and fixed through the second mounting holes 105. In this embodiment, the front end and the rear end of top wall 103 respectively are equipped with 5 second mounting holes 105, and the left and right ends of top wall 103 respectively are equipped with 4 second mounting holes 105, and wind channel 20 and radiator 40 pass through the mounting screw in holding tank 101 of supporting seat 10 downside, and preferably, the inner wall of holding tank 101 is the same with the outer wall shape of wind channel 20, just can not form the clearance between the inner wall of holding tank 101 and the outer wall of wind channel 20, avoids the dust to fall into the clearance in, is difficult to the clearance. The two sides of the air duct 20 are respectively connected to the side walls 104 of the support base 10 by 10 screws or rivets, so that the connection between the air duct 20 and the support base 10 is more stable.

In this embodiment, the air duct 20 includes the upper casing 21, the lower casing 22 and the strengthening rib 23 that sets up on the upper casing 21 and the lower casing 22, the strengthening rib 23 can further increase the intensity of air duct 20, avoid the air duct to warp, the upper casing 21 is connected with the lower casing 22 and is formed ventilation hole 202, (the upper casing is sealed glue at the junction, and pass through rivet fixation with supporting seat 10 lateral wall) air duct 20 passes through the upper casing 21 and the lower casing 22, be convenient for installation and reduce stamping forming's technology degree of difficulty, the whole straight tubbiness that is hollow structure of air duct 20, the second through-hole 201 sets up on the upper casing 21, the inside fin that is equipped with a plurality of radiators 40 of air duct 20. Of course, in other embodiments, the air duct 20 may be integrally formed. The wind shielding sheets 24 are arranged in the ventilation holes 202 of the wind channel 20, the wind shielding sheets 24 are used for controlling the wind direction in the ventilation holes 202, two wind shielding sheets 24 are arranged and are respectively positioned at two sides inside the wind channel 20, and the wind shielding sheets 24 are connected with the wind channel 20 through screws. Of course, in other embodiments, the air inlet of the air duct 20 may be designed to be inclined instead of the wind-blocking sheet 24, thereby reducing the installation process.

In the embodiment, the positions of the screw heads at all the connecting positions are coated with the sealant, so that the air tightness is improved, and the reduction of heat dissipation capacity caused by air leakage is prevented.

According to the invention, the air duct 20 is arranged in the accommodating groove 101 at the bottom of the supporting seat 10, the supporting seat 10 is used for bearing the whole weight of the converter module, the deformation and the installation position deviation of the air duct 20 after bearing the weight are avoided, the reliability of the air duct 20 is ensured, the air duct 20 and the supporting beams 10 are made of aluminum materials, the heat dissipation capability can be improved, the weight is reduced, the supporting seat 10 is made of stainless steel, the strength is high, the supporting effect is better, the air duct 20 and the supporting beams 30 are made of aluminum, the heat dissipation capability can be improved, and the weight is reduced.

In this document, the terms upper, lower, left, right, front, rear and the like are used for defining the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The converter module is characterized by comprising a supporting seat (10) and an air duct (20), wherein the supporting seat (10) is provided with an accommodating groove (101) and a first through hole (102) communicated with the accommodating groove (101), the first through hole (102) is positioned on the top wall (103) of the supporting seat (10), the air duct (20) is positioned in the accommodating groove (101) and connected with the supporting seat (10), the air duct (20) is provided with a second through hole (201) communicated with the first through hole (102), the air duct (20) is of a hollow structure and used for accommodating a fin of a radiator (40), a power device (50) on the converter module penetrates through the first through hole (102) and the second through hole (201) and is connected with the radiator (40), and the power device (50) is connected with the supporting seat (10) through the radiator (40).

2. The converter module according to claim 1, characterized in that it further comprises a support beam (30), which support beam (30) is connected to the support base (10), which support beam (30) is used for mounting a capacitor assembly (60) on the converter module.

3. The converter module according to claim 2, characterized in that the support beam (30) comprises a left beam (31), a right beam (32) and a cross beam (33) connected to the upper end of the left beam (31) and the upper end of the right beam (32), the lower end of the left beam (31) and the lower end of the right beam (32) being connected to the two ends of the top wall (103), respectively.

4. The converter module according to claim 3, wherein the left beam (31) and the right beam (32) are each provided with a first mounting hole (301) for mounting the capacitor assembly (60), and two ends of the capacitor assembly (60) are connected to the left beam (31) and the right beam (32), respectively.

5. The converter module according to claim 2, wherein the support base (10) is made of stainless steel and the air duct (20) and the support beam (20) are made of aluminum.

6. Converter module according to claim 1, wherein the support (10) is provided with flanges (11) on both side walls (104), the flanges (11) being folded towards the side remote from the air duct (20).

7. The converter module according to claim 6, characterized in that the bottom of the support (10) is provided with a reinforcement beam (12), and the reinforcement beam (12) is connected to the flanges (11) on both sides of the support (10).

8. The converter module according to claim 1, wherein a plurality of second mounting holes (105) are further formed in the top wall (103) of the support base (10), and the plurality of second mounting holes (105) are located at the periphery of the first through hole (102) and are used for mounting the air duct (20), the heat sink (40) and the power device (50).

9. The converter module according to claim 1, wherein the air duct (20) comprises an upper housing (21), a lower housing (22) and reinforcing ribs (23) arranged on the upper housing (21) and the lower housing (22), the upper housing (21) and the lower housing (22) are connected and form a ventilation hole (202), a wind shielding sheet (24) is arranged in the ventilation hole (202), and the wind shielding sheet (24) is used for controlling the wind direction in the ventilation hole (202).

10. A converter, characterized in that it comprises a converter module according to any of claims 1-9.