CN218387246U

CN218387246U - Converter power module

Info

Publication number: CN218387246U
Application number: CN202222820438.7U
Authority: CN
Inventors: 冯晓军; 刘克城; 梁艳召; 温海平; 马建召
Original assignee: Dunshi Magnetic Energy Technology Co ltd
Current assignee: Dunshi Magnetic Energy Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-24
Anticipated expiration: 2032-10-25

Abstract

The utility model provides a converter power module, which comprises a module frame, three groups of capacitors, a heat dissipation assembly, a protective cover, a composite busbar, three groups of power devices, three alternating current interphase copper bars and three drive circuit boards; the three groups of capacitors respectively correspond to the phase A, the phase B and the phase C of the converter power module, and are connected with the module frame; the heat dissipation assembly is connected with the module frame; the protective cover is covered on the composite busbar and is connected with the module frame; the composite bus bar is connected with the module frame and is in conductive connection with the three groups of capacitors, and the composite bus bar is provided with a direct current positive terminal and a direct current negative terminal; three groups of power devices are arranged on the radiating surface of the radiating assembly and connected with the module frame, the three groups of power devices respectively correspond to the phase A, the phase B and the phase C of the converter power module, and the output sides of the power devices are in conductive connection with the composite busbar; the three alternating-current interphase copper bars are respectively and electrically connected with the input side conductors of the three groups of power devices; and the three driving circuit boards are respectively connected with the three groups of power devices in a conducting way.

Description

Converter power module

Technical Field

The utility model belongs to the technical field of the electric energy meter label, concretely relates to converter power module.

Background

The converter is equipment for realizing the function of electric energy alternating current-direct current bidirectional conversion, and has wide application in the industries of energy, chemical engineering and the like. In the context of electrification, the demand for converters continues to increase, and power modules are the core elements of the functional implementation of converters.

The power module of the existing high-power converter is generally single-phase, each phase passes through the copper bar again, and the busbar is connected, so that the structure is complex, the number of parts is large, the assembly is not easy, and the relative cost is high.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a converter power module aims at solving above-mentioned technical problem.

In order to achieve the purpose, the utility model adopts the technical proposal that: there is provided a converter power module comprising:

a module frame;

the three groups of capacitors respectively correspond to the phase A, the phase B and the phase C of the converter power module, and are connected with the module frame;

a heat dissipation assembly connected with the module frame;

the protective cover is covered on the composite busbar and connected with the module frame;

the composite busbar is connected with the module frame and is in conductive connection with the three groups of capacitors, and the composite busbar is provided with a direct-current positive terminal and a direct-current negative terminal;

the three groups of power devices are arranged on the radiating surface of the radiating assembly and connected with the module frame, the three groups of power devices respectively correspond to the phase A, the phase B and the phase C of the converter power module, and the output sides of the power devices are electrically connected with the composite busbar;

the three alternating-current interphase copper bars are respectively in conductive connection with the input sides of the three groups of power devices;

and the three driving circuit boards are connected with the protective cover and are respectively in conductive connection with the three groups of power devices.

In a possible implementation mode, the module frame comprises a shell and two partition plates, the shell is in a columnar shape, the upper end and the lower end of the shell are arranged in an open mode, the two partition plates are arranged in the vertical space in the shell, the inside of the shell is divided into three chambers, and the three chambers respectively correspond to an A phase, a B phase and a C phase of the converter power module.

In one possible implementation, the housing includes a bottom plate and a cover plate in the shape of a letter "21274.

In a possible implementation manner, three groups of capacitors are respectively arranged in the three cavities, and each group of capacitors is three, and a positive terminal and a negative terminal of each capacitor protrude out of the cover plate and are electrically connected with the composite busbar.

In a possible implementation manner, the heat dissipation assembly includes three heat sinks, and the three heat sinks are respectively disposed in the three cavities and are in heat conduction connection with the cover plate.

In a possible implementation manner, three groups of the power devices are respectively in heat conduction connection with the heat dissipation surfaces of the three heat sinks, and each group of the power devices includes four power devices.

In a possible implementation manner, each driving circuit board is provided with four communication interfaces, and the four communication interfaces are respectively in communication connection with four power devices in a group of power devices.

In a possible implementation manner, the module frame further includes two handles, and the two handles are respectively connected to two ends of the cover plate.

In a possible implementation manner, the module frame further includes a plurality of installation screw holes, and the installation screw holes are respectively connected with two ends of the cover plate.

In a possible implementation manner, the composite busbar comprises a positive copper bar, a negative copper bar and a plurality of insulating plates, the positive copper bar is electrically connected with positive terminals of the three groups of capacitors and with positive terminals of the three groups of power devices, and is provided with one direct current positive terminal; the negative copper bar is electrically connected with the negative terminals of the capacitors and the negative terminals of the power devices, and is provided with two direct current negative terminals and a plurality of insulation plates which are respectively attached to the two sides of the positive copper bar and the two sides of the negative copper bar.

The utility model provides a converter power module's beneficial effect is: compared with the prior art, the utility model provides a converter power module integrates electric capacity, power device and the circuit drive plate that the three-phase corresponds simultaneously on a module frame to through compound female arranging the electric capacity that corresponds the three-phase link together, link together the power device that the three-phase corresponds, link together electric capacity and power device simultaneously, functionally be equivalent to three single-phase power module, the part quantity that has significantly reduced makes the structure simpler, compact, easy to assemble uses.

Drawings

Fig. 1 is a schematic perspective view of a converter power module according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a three-dimensional structure of a converter power module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an explosion structure of a composite busbar in a converter power module according to an embodiment of the present invention;

description of reference numerals:

10. a module frame; 11. a base plate; 12. a cover plate; 13. a partition plate;

14. a handle; 15. mounting a screw hole; 20. a capacitor; 30. a composite busbar;

31. a positive copper bar; 32. a negative copper bar; 33. an insulating plate; 34. a direct current positive terminal;

35. a DC negative terminal; 40. a protective cover; 50. a power device; 60. alternating-current interphase copper bars;

70. a drive circuit board; 80. a heat sink.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously positioned and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Referring to fig. 1 to fig. 3, a power module of a converter according to the present invention will now be described.

The converter power module comprises a module frame 10, three groups of capacitors 20, a heat dissipation assembly, a protective cover 40, a composite busbar 30, three groups of power devices 50, three alternating-current interphase copper bars 60 and three driving circuit boards 70; the three groups of capacitors 20 respectively correspond to the phase A, the phase B and the phase C of the converter power module, and the three groups of capacitors 20 are connected with the module frame 10; the heat dissipation assembly is connected with the module frame 10; the protective cover 40 covers the composite busbar 30 and is connected with the module frame 10; the composite busbar 30 is connected with the module frame 10 and is in conductive connection with the three groups of capacitors 20, and the composite busbar 30 is provided with a direct current positive terminal 34 and a direct current negative terminal 35; the three groups of power devices 50 are arranged on the radiating surface of the radiating assembly and connected with the module frame 10, the three groups of power devices 50 respectively correspond to the A phase, the B phase and the C phase of the converter power module, and the output sides of the power devices 50 are electrically connected with the composite busbar 30; the three alternating-current interphase copper bars 60 are respectively electrically connected with the input side conductors of the three groups of power devices 50; the three driving circuit boards 70 are all connected to the protective cover 40 and are respectively connected to the three groups of power devices 50 in an electrically conductive manner.

Specifically, the power device 50 is an IGBT, which is also called an insulated gate bipolar transistor, and is a composite fully-controlled voltage-driven power semiconductor device composed of a bipolar transistor and an insulated gate field effect transistor, and has the advantages of both high input impedance of a metal oxide semiconductor field effect transistor and low on-state voltage drop of a power transistor.

The direct current positive terminal 34 and the direct current negative terminal 35 on the composite busbar 30 are the output side of the converter power module, and the three alternating current interphase copper bars 60 are the input side of the converter power module.

The embodiment of the utility model provides a converter power module's beneficial effect is: compared with the prior art, the embodiment of the utility model provides a converter power module integrates the electric capacity 20 that the three-phase corresponds simultaneously on a module frame 10, power device 50, and the circuit drive board, and link together electric capacity 20 that corresponds the three-phase through female 30 row of complex, link together power device 50 that corresponds the three-phase, link together electric capacity 20 and power device 50 simultaneously, be equivalent to three single-phase power module in function, the part quantity has significantly reduced, make the structure simpler, compact, easy to assemble uses.

As shown in fig. 1 and fig. 2, in a specific implementation manner of the converter power module provided in this embodiment, the module frame 10 includes a housing and two partition plates 13, the housing is in a cylindrical shape, and the upper and lower ends of the housing are open, the two partition plates 13 are vertically arranged in the housing at intervals, and divide the interior of the housing into three chambers, which correspond to the a phase, the B phase and the C phase of the converter power module respectively.

As shown in fig. 1 and fig. 2, in a specific embodiment of the converter power module provided in this embodiment, the housing includes a bottom plate 11 and a cover plate 12, where the cover plate 12 is in a shape of "21274", and the cover plate 12 is connected to the bottom plate 11 for easy installation and disassembly.

It should be noted that the protection cover 40 and the power device 50 are both connected to the cover plate 12.

As shown in fig. 1 and fig. 2, in a specific implementation manner of the converter power module provided in this embodiment, three sets of capacitors 20 are respectively disposed in three chambers, and each set of capacitors 20 includes three capacitors 20, and a positive terminal and a negative terminal of each capacitor 20 both protrude from the cover plate 12 and are electrically connected to the composite busbar 30.

As shown in fig. 1 and fig. 2, in a specific embodiment of the converter power module provided in this embodiment, the heat dissipation assembly includes three heat sinks 80, and the three heat sinks 80 are respectively disposed in the three cavities and are in heat conduction connection with the cover plate 12.

Specifically, the heat sink 80 is an existing heat sink 80.

As shown in fig. 1 and fig. 2, in a specific embodiment of the converter power module provided in this embodiment, three groups of power devices 50 are respectively in heat conduction connection with the heat dissipation surfaces of three heat sinks 80, and each group of power devices 50 includes four.

It should be understood that each phase on the module frame 10 is separated and distinguished by the partition plate 13, and the whole air duct is divided into three parts, so that ventilation is more uniform, and effective heat dissipation is facilitated. When the power module is used in the converter, the lower air supply, namely the lower fan, or the upper air draft, namely the upper fan, can be adopted according to the structure of the converter so as to meet different structural requirements of the converter.

As shown in fig. 1 and fig. 2, in a specific implementation of the converter power module provided in this embodiment, each driving circuit board 70 is provided with four communication interfaces, the four communication interfaces are respectively in communication connection with four power devices 50 in a group of power devices 50, and driving signals of the driving circuit board 70 are transmitted with the power devices 50 through flat cables.

As shown in fig. 1 and fig. 2, in a specific implementation of the converter power module provided in this embodiment, the module frame 10 further includes two handles 14, and the two handles 14 are respectively connected to two ends of the cover plate 12, so as to facilitate carrying and installation.

As shown in fig. 1 and fig. 2, in a specific implementation of the converter power module provided in this embodiment, the module frame 10 further includes a plurality of mounting screw holes 15, and the mounting screw holes 15 are respectively connected to two ends of the cover plate 12, so as to facilitate mounting with the converter.

As shown in fig. 1 and fig. 3, in a specific embodiment of the converter power module provided in this embodiment, the composite busbar 30 includes a positive copper bar 31, a negative copper bar 32, and a plurality of insulating plates 33, the positive copper bar 31 is electrically connected to positive terminals of the three sets of capacitors 20, and is electrically connected to positive terminals of the three sets of power devices 50, and is provided with a dc positive terminal 34; the negative copper bar 32 is electrically connected with the negative terminals of the three groups of capacitors 20 and the negative terminals of the three groups of power devices 50, and is provided with two direct current negative terminals 35, and a plurality of insulating plates 33 are respectively attached to two sides of the positive copper bar 31 and two sides of the negative copper bar 32.

The specific arrangement sequence of the anode copper bar 31, the cathode copper bar 32 and the plurality of insulating plates 33 is that the insulating plates 33, the cathode copper bar 32, the insulating plates 33, the anode copper bar 31 and the insulating plates 33 are arranged from inside to outside in sequence.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A converter power module, comprising:

a module frame (10);

the three groups of capacitors (20) respectively correspond to the phase A, the phase B and the phase C of the converter power module, and the three groups of capacitors (20) are connected with the module frame (10);

a heat sink assembly connected to the module frame (10);

the composite busbar (30) is connected with the module frame (10) and is in conductive connection with the three groups of capacitors (20), and the composite busbar (30) is provided with a direct-current positive terminal (34) and a direct-current negative terminal (35);

the protective cover (40) is covered on the composite busbar (30) and connected with the module frame (10);

the three groups of power devices (50) are arranged on the radiating surface of the radiating assembly and connected with the module frame (10), the three groups of power devices (50) respectively correspond to the phase A, the phase B and the phase C of the converter power module, and the output sides of the power devices (50) are in conductive connection with the composite busbar (30);

the three alternating-current interphase copper bars (60) are respectively in conductive connection with the input sides of the three groups of power devices (50); and

and the three driving circuit boards (70) are connected with the protective cover (40) and are respectively in conductive connection with the three groups of power devices (50).

2. The converter power module of claim 1, wherein the module frame (10) comprises a cylindrical housing and two partition plates (13), the upper and lower ends of the cylindrical housing are open, the two partition plates (13) are vertically spaced in the housing, and the interior of the housing is divided into three chambers, which correspond to the phases a, B and C of the converter power module.

3. The converter power module as claimed in claim 2, characterized in that the housing comprises a base plate (11) and a cover plate (12), the cover plate (12) being in the shape of a letter \21274, the cover plate (12) being connected to the base plate (11).

4. The converter power module as claimed in claim 3, wherein three sets of said capacitors (20) are respectively disposed in three said cavities, and each set of said capacitors (20) has three positive and negative terminals of each capacitor (20) protruding from said cover plate (12) and being electrically connected to said composite busbar (30).

5. The converter power module as claimed in claim 4 wherein said heat sink assembly includes three heat sinks (80), three of said heat sinks (80) being disposed in three of said chambers, respectively, and being in thermally conductive connection with said cover plate (12).

6. The converter power module of claim 5, wherein three sets of said power devices (50) are in thermally conductive communication with respective heat dissipating surfaces of three said heat sinks (80), each set of said power devices (50) comprising four.

7. The converter power module as claimed in claim 6 wherein each of said driver boards (70) has four communication ports, each of said four communication ports being communicatively connected to a respective one of four of said power devices (50) in a group of said power devices (50).

8. The converter power module as claimed in claim 7, characterized in that said module frame (10) further comprises two handles (14), said two handles (14) being connected to both ends of said cover plate (12), respectively.

9. The converter power module of claim 8, characterized in that said module frame (10) further comprises a plurality of mounting screw holes (15), said mounting screw holes (15) being connected to both ends of said cover plate (12), respectively.

10. The converter power module according to claim 9, wherein the composite busbar (30) comprises a positive copper bar (31), a negative copper bar (32) and a plurality of insulating plates (33), the positive copper bar (31) is electrically connected with the positive terminals of three groups of capacitors (20) and the positive terminals of three groups of power devices (50), and is provided with one direct current positive terminal (34); negative pole copper bar (32) and three groups the negative pole terminal conductive connection of electric capacity (20), with three groups the negative pole terminal conductive connection of power device (50) is equipped with two direct current negative pole terminal (35), a plurality of insulation board (33) respectively with anodal copper bar (31) with the both sides laminating of negative pole copper bar (32).