CN213027840U - I-type three-level structure direct parallel power module of energy storage converter - Google Patents
I-type three-level structure direct parallel power module of energy storage converter Download PDFInfo
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- CN213027840U CN213027840U CN202022256318.XU CN202022256318U CN213027840U CN 213027840 U CN213027840 U CN 213027840U CN 202022256318 U CN202022256318 U CN 202022256318U CN 213027840 U CN213027840 U CN 213027840U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 31
- 238000013461 design Methods 0.000 claims abstract description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 239000010409 thin film Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a three level structure of energy storage converter I type are directly connected power module, when power module system considers enough radiating, the design is a simple structure's three level module of high-power, realize the energy storage converter design of 1.5-2MW level, and structural ingenious design makes the small and exquisite compactness of module design, the female circuit design of arranging of IGBT parallel structure and unique stromatolite of two mirror images, solve complicated return circuit trend when reaching flow equalizing, planar design makes the assembly succinct, it occupies to reduce the modular structure volume, copper bar subassembly front maintenance design is convenient after sale. The technical problems of complex module structure, high cost and difficult maintenance in the prior art are solved.
Description
Technical Field
The utility model relates to a new forms of energy technical field such as energy storage converter especially relates to a three level structure of energy storage converter I type is straight and power module.
Background
In the prior art energy storage converter product, as shown in fig. 1. When the circuit with the three-level structure needs to be connected in parallel, the IGBTs are generally connected in parallel after passing through the reactor, the requirement on the design of the current-sharing property of the parallel IGBTs is low, but the reactor and the control system with the same number are needed, the circuit structure is complex, the control system is complex, and the cost is higher. Meanwhile, the number of I-type three-level module assemblies is large, the number of thin film capacitors is large compared with that of common modules, the market demand of the compactness of the energy storage converter is met, and the module design difficulty is high. Therefore, how to meet the IGBT direct current parallel requirement through the structure current sharing design and change the traditional circuit structure; if the design size of the power module is reduced, how to more conveniently maintain and the like is a technical problem which needs to be solved urgently.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a three level structure of energy storage converter I type is directly connected power module, and it is complicated to aim at solving the circuit topology and the modular structure that exist among the prior art, and the cost is higher, maintains the technical problem of difficulty.
In order to achieve the above object, the present invention provides an energy storage converter I-type three-level structure direct combining power module, which includes two single power modules, each single power module includes a single-sided recess-shaped casing without a side wall, an IGBT fixing platform disposed inside the recess-shaped casing, a power module assembly disposed inside the recess-shaped casing, and a cover plate for sealing the top of the recess-shaped casing; wherein: the power module assembly comprises an IGBT power assembly, an IGBT driving board, a radiator and a direct current filtering assembly; the direct current filter component comprises a thin film capacitor and a laminated busbar, the bottom layer busbar is arranged between the thin film capacitor and a cover plate, the IGBT power component and the IGBT drive board are fixedly arranged on an IGBT fixed platform, the thin film capacitor and the IGBT fixed platform are arranged side by side, and the heat dissipation efficiency of the single power module is improved through a radiator arranged at the position of the shell without a side wall.
Preferably, the energy storage converter I-type three-level structure direct-parallel power module is characterized in that an IGBT power assembly adopts an I-type three-level structure, the two single power modules are directly connected in parallel through the I-type three-level structure in the IGBT power assembly, and the two single power modules containing the IGBT power assembly are directly connected in parallel.
Preferably, the upper contact surface of the thin film capacitor, the upper contact surface of the IGBT power assembly, the upper contact surface of the IGBT driving assembly and the upper contact surface of the radiator are on the same plane.
Preferably, the I-type three-level structure direct parallel power module of the energy storage converter adopts a five-path four-layer-stacked planar structure, and is matched with an IGBT parallel structure, so that the IGBT current sharing design is realized.
Preferably, the I-type three-level structure direct parallel power module of the energy storage converter is characterized in that a support plate is connected between the IGBT fixing platform and the bottom surface of the shell, the support plate is arranged on two sides of the inner side wall of the shell, and the support plate and the IGBT fixing platform form a cavity space convenient for heat dissipation.
Preferably, the radiator is arranged on the side of the shell of the cavity space without the side wall direction and used for radiating the power module assembly through the cavity space.
Preferably, the single power module further comprises a copper bar group attached to the IGBT drive board, so as to improve the heat dissipation efficiency of the power module assembly.
Preferably, the cover plate is provided with heat dissipation holes.
The utility model discloses in, when the power module system considers enough heat dissipation, the design is a simple structure's three level module of high-power, realize the energy storage converter design of 1.5-2MW level, and structural ingenious design makes the small and exquisite compactness of module design, the female circuit design of arranging of IGBT parallel structure and unique stromatolite of two mirrors images, solve complicated return circuit trend when reaching flow equalizing, planar design makes the assembly succinct, it occupies to reduce the modular structure volume, copper bar subassembly front maintenance design is convenient after sale. The technical problems of complex module structure, high cost and difficult maintenance in the prior art are solved.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an electrical schematic diagram of a parallel circuit of a three-level structure of a conventional energy storage converter;
fig. 2 is an electrical schematic diagram of an I-type tri-level structural direct parallel power module of an energy storage converter according to the present invention;
fig. 3 is a schematic diagram of a single module structure of an I-type tri-level structural direct parallel power module of an energy storage converter according to the present invention;
fig. 4 is a schematic structural diagram of a direct combining module of an energy storage converter I-type three-level structure direct combining power module according to the present invention;
fig. 5 is a schematic structural diagram illustrating the decomposition of an I-type tri-level structural direct parallel power module of an energy storage converter according to the present invention;
fig. 6 is a schematic structural diagram of a planar direct laying five-way stacked four-layer design scheme of an I-type three-level structure direct parallel power module of an energy storage converter provided by the present invention;
fig. 7 is the utility model provides a structural schematic diagram of the copper bar front maintenance design of three level structure of energy storage converter I type direct parallel power module.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In this embodiment, an energy storage converter I-type three-level structure direct combining power module includes two single power modules, each single power module includes a groove-shaped casing with a single surface without a side wall, an IGBT fixing platform arranged inside the groove-shaped casing, a power module assembly arranged inside the groove-shaped casing, and a cover plate 1 used for packaging the top of the groove-shaped casing; wherein: the power module assembly comprises an IGBT power assembly 3, an IGBT driving board 4, a radiator 5 and a direct current filtering assembly; the direct current filter component comprises a thin film capacitor 7 and a laminated busbar, a bottom layer busbar 2 is arranged between the thin film capacitor 7 and a cover plate 1, an IGBT power component 3 and an IGBT drive board 4 are fixedly arranged on an IGBT fixed platform, the thin film capacitor 7 and the IGBT fixed platform are arranged side by side, and the heat dissipation efficiency of a single power module is improved through a radiator 5 arranged at the position where the shell does not have a side wall.
It should be noted that the IGBT power assembly 3 adopts an I-type three-level structure, the two single power modules are directly connected in parallel through the I-type three-level structure in the IGBT power assembly, and the two single power modules including the IGBT power assembly 3 are directly connected in parallel. And the upper contact surface of the thin-film capacitor 7, the upper contact surface of the IGBT power assembly 3, the upper contact surface of the IGBT driving assembly and the upper contact surface of the radiator 5 are positioned on the same plane. The IGBT parallel structure of two mirror images and the unique laminated busbar circuit design realize the IGBT current sharing design.
Furthermore, a support plate is connected between the IGBT fixed platform and the bottom surface of the shell, the support plate is arranged on two sides of the inner side wall of the shell, and the support plate and the IGBT fixed platform form a cavity space convenient for heat dissipation. The radiator 5 is arranged on the side of the shell without the side wall direction in the cavity space and used for radiating the power module assembly through the cavity space. The single power module further comprises a copper bar group 6 attached to the IGBT drive board 4 and used for improving the heat dissipation efficiency of the power module assembly. The cover plate 1 is provided with heat dissipation holes.
The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings:
as shown in fig. 2, the electrical principle of a direct parallel power module based on an I-type three-level structure according to a first embodiment of the present invention is schematically illustrated.
As shown in fig. 3 and 4, the utility model discloses a straight and power module overall structure schematic diagram based on three level structure of I type of first embodiment, the utility model discloses structural two modules of adoption are straight and for the design of the same kind, annotate the associativity of heavy structure on film capacitor 7 and 5 lectotypes of radiator, accomplish 5IGBT contact surfaces of radiator and electric capacity positive and negative contact surface on the coplanar for the female row of stromatolite can accomplish planar design, and five ways of recombination four layers's scheme is reunited, accomplishes the structural compactness of single module and small and exquisite.
As shown in fig. 4, the structure of the power module system according to the third embodiment of the present invention is schematically illustrated; the power module system comprises a radiator 5, an IGBT power component 3, a copper bar group 6, a shell, a laminated busbar, a thin film capacitor 7 and an IGBT drive board 4 which are all key components of the new energy product
As shown in fig. 5, the structure of the design scheme of the power module system of the fourth embodiment of the present invention is a planar direct-laying five-way four-layer stacked design scheme; the IGBT parallel structure with two mirror images and the unique laminated busbar circuit design achieve the aim of solving the trend of a complex circuit while achieving current sharing, the planar design scheme enables assembly to be simple, and the occupied modular structure volume is reduced.
As shown in fig. 6, the structure of the power module system copper bar front maintenance design of the fifth embodiment of the present invention is schematically illustrated; the copper bar group 6 is designed at the front end of the cabinet, so that the test is convenient for sampling, the assembly is convenient for detection, and the after-sale module maintenance is also convenient.
The utility model discloses in, when the power module system considers enough heat dissipation, the design is a simple structure's three level module of high-power, realize the energy storage converter design of 1.5-2MW level, and structural ingenious design makes the small and exquisite compactness of module design, the female circuit design of arranging of unique stromatolite, it moves towards to reach the complicated return circuit of solution when flow equalizing, planar design makes the assembly succinct, it occupies to reduce the modular structure volume, the convenient after-sale of 6 preceding maintenance designs of copper bar group. The technical problems of complex module structure, high cost and difficult maintenance in the prior art are solved.
The methods, systems, and modules disclosed herein may be implemented in other ways. For example, the above-described embodiments are merely illustrative, and for example, the division of the modules may be merely a logical division, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be referred to as an indirect coupling or communication connection through some interfaces, systems or modules, and may be in an electrical, mechanical or other form.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (8)
1. The I-type three-level structure direct combining power module of the energy storage converter is characterized by comprising two single power modules, wherein each single power module comprises a groove-shaped shell with a single surface without a side wall, an IGBT (insulated gate bipolar transistor) fixed platform arranged in the groove-shaped shell, a power module assembly arranged in the groove-shaped shell and a cover plate (1) used for packaging the top of the groove-shaped shell; wherein: the power module assembly comprises an IGBT power assembly (3), an IGBT driving board (4), a radiator (5) and a direct current filtering assembly; the direct current filter assembly comprises a thin film capacitor (7) and a laminated busbar, wherein a bottom layer busbar (2) is arranged between the thin film capacitor (7) and a cover plate (1), an IGBT power assembly (3) and an IGBT drive plate (4) are fixedly arranged on an IGBT fixed platform, the thin film capacitor (7) and the IGBT fixed platform are arranged side by side, and the heat dissipation efficiency of a single power module is improved through a radiator (5) arranged at the position where the shell does not have a side wall.
2. An energy storage converter I-type three-level structure direct-combining power module as claimed in claim 1, wherein the IGBT power module (3) adopts an I-type three-level structure, and the two single power modules are directly and parallelly connected through the I-type three-level structure in the IGBT power module, so that the two single power modules including the IGBT power module (3) are directly and parallelly combined into one path.
3. An energy storage converter type I three-level structure direct-parallel power module as claimed in claim 1, characterized in that the upper contact surface of the thin film capacitor (7), the upper contact surface of the IGBT power module (3), the upper contact surface of the IGBT driving module and the upper contact surface of the heat sink (5) are in the same plane.
4. The I-type three-level structure direct-current power module of the energy storage converter according to claim 3, wherein the laminated busbar adopts a five-path laminated four-layer planar structure and is matched with an IGBT parallel structure to realize an IGBT current sharing design.
5. The I-type three-level structural direct combining power module of the energy storage converter as claimed in claim 1, wherein a support plate is connected between the IGBT fixing platform and the bottom surface of the housing, the support plate is disposed at two sides of the inner side wall of the housing, and the support plate and the IGBT fixing platform form a cavity space for facilitating heat dissipation.
6. The I-type three-level structural direct-combining power module of the energy storage converter as claimed in claim 5, wherein the heat sink (5) is disposed on the housing sidewall-free direction side of the cavity space for dissipating heat of the power module assembly through the cavity space.
7. The I-type three-level structure direct-parallel power module of the energy storage converter as claimed in claim 1, wherein the single power module further comprises a copper bar group (6) attached to the IGBT driving board (4) for improving the heat dissipation efficiency of the power module assembly.
8. An energy storage converter type I tri-level structural direct current power module as claimed in claim 1, characterized in that said cover plate (1) is provided with heat dissipation holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022256318.XU CN213027840U (en) | 2020-10-12 | 2020-10-12 | I-type three-level structure direct parallel power module of energy storage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022256318.XU CN213027840U (en) | 2020-10-12 | 2020-10-12 | I-type three-level structure direct parallel power module of energy storage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213027840U true CN213027840U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022256318.XU Active CN213027840U (en) | 2020-10-12 | 2020-10-12 | I-type three-level structure direct parallel power module of energy storage converter |
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| Country | Link |
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| CN (1) | CN213027840U (en) |
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- 2020-10-12 CN CN202022256318.XU patent/CN213027840U/en active Active
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