CN220527897U - Novel four-quadrant power module structure - Google Patents
Novel four-quadrant power module structure Download PDFInfo
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- CN220527897U CN220527897U CN202321593867.3U CN202321593867U CN220527897U CN 220527897 U CN220527897 U CN 220527897U CN 202321593867 U CN202321593867 U CN 202321593867U CN 220527897 U CN220527897 U CN 220527897U
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Abstract
A novel four-quadrant power module structure comprising: the power module assembly comprises an external frame, a diode string, an IGCT string, an anode reactance, a unit controller and a water cooling pipeline; the outer frame comprises a first frame welding, a second frame welding, an epoxy support beam and a panel; the diode string and the IGCT string are respectively connected with the first frame welding piece through M10 bolts, and the diode string and the IGCT string are connected through copper bars; the anode reactance is connected with a radiator of the diode string through a copper bar; the unit controller is positioned at the front side of the power module structure, and the board card indicator lamp of the unit controller faces to the front side; the capacitor assembly comprises a first capacitor copper bar, a second capacitor copper bar and an insulating partition plate made of sheet molding compound materials, and the problems of heating of elements in the module and heating of a metal frame are solved by the epoxy support beam and the water cooling pipeline reasonably in layout.
Description
Technical Field
The utility model belongs to new energy storage power electronic equipment, and particularly relates to a novel four-quadrant power module structure.
Background
The four-quadrant power regulating device can realize active and reactive compensation to the power grid, and the four-quadrant power regulating device mainly depends on the four-quadrant power module. The four-quadrant power module is one type of power module and is used for converting unidirectional alternating current into direct current so as to supply power for a subsequent inverter circuit. The four-quadrant power module can complete bidirectional energy flow of the energy storage part and the power grid part, can also realize reactive power regulation of the power grid, and can compensate randomness of new energy and low density of energy.
The existing four-quadrant power module has more devices, and meanwhile, the space inside the four-quadrant power module structure is limited, so that the heat dissipation problem exists in the four-quadrant power module structure; in addition, the existing four-quadrant power module structure generally uses a metal frame, a large amount of heat can be generated in the operation process of the power device, and the metal frame can generate heat and cannot rapidly dissipate heat when in use; in addition, when a part or a certain device of the power unit breaks down, the whole power unit is detached from the four-quadrant power module structure for maintenance, so that the maintenance is difficult and the installation is difficult.
In addition, insulation treatment is needed among a plurality of capacitors of the four-quadrant power module, the existing insulation scheme cannot achieve the effects of high strength, good toughness, long service life and good electrical insulation performance when the electric insulation distance between two poles of the capacitors is met, and meanwhile, the insulation component of the four-quadrant power module adopting the water cooling pipeline also needs to meet the effects of water resistance and moisture resistance.
Therefore, based on the above-mentioned shortcomings of the prior art, a new four-quadrant power module structure is needed.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a novel four-quadrant power module structure which is convenient to install and good in heat dissipation.
In order to achieve the above design objective, the present utility model adopts the following scheme:
a novel four-quadrant power module structure comprising: the power module assembly comprises an external frame, a diode string, an IGCT string, an anode reactance, a unit controller and a water cooling pipeline; the outer frame comprises a first frame welding, a second frame welding, an epoxy support beam and a panel; the diode string and the IGCT string are respectively connected with the first frame welding piece through M10 bolts, and the diode string and the IGCT string are connected through copper bars; the anode reactance is connected with a radiator of the diode string through a copper bar; the unit controller is positioned at the front side of the power module structure, and the board card indicator lamp of the unit controller faces to the front side; the capacitor assembly comprises a first capacitor copper bar, a second capacitor copper bar and an insulating partition plate made of sheet molding compound materials.
Preferably, the first frame welding is arranged at the top of the four-quadrant power module structure, the second frame welding is arranged at the top of the four-quadrant power module structure, and the first frame welding and the second frame welding are fixedly connected and supported through four epoxy support beams.
Preferably, the first frame welding and the second frame welding adopt 3mm cold-rolled Q235-A materials.
Preferably, the epoxy support beam is made of 22mm by 50mm epoxy SMC material.
Preferably, the outer frame is peripherally covered with a panel, wherein the panel is an aluminium zinc-coated sheet having a thickness of.mm.
Preferably, the second frame is welded with the bottom bearing part, and the bearing is fixed by adopting a wheel seat, a shaft sleeve, a flat washer and a spring washer; wherein the wheel seat and the shaft sleeve are made of stainless steel.
Preferably, the water cooling pipeline comprises six water pipes I, two water pipes II, seven water pipes III, four water pipes IV, five water pipes V, six water pipes V, two water pipes seven, a water pipe assembly I and a water pipe assembly II, wherein the water pipe assembly I and the water pipe assembly II are arranged at the top of an external frame in parallel, and the outer side joints of the water pipe assembly I and the water pipe assembly II extend to the outer side of the four-quadrant power module structure.
Preferably, the pipeline material of the first water pipe, the second water pipe, the third water pipe, the fourth water pipe, the fifth water pipe, the sixth water pipe and the seventh water pipe is FEP.
Preferably, PVDF is selected as the material of the first water pipe assembly and the second water pipe assembly.
Preferably, the capacitor assembly comprises two 12.5mf capacitors, a first capacitor copper bar and a second capacitor copper bar are arranged at the terminals of the capacitor assembly, and an insulating partition plate is arranged between the first capacitor copper bar and the second capacitor copper bar;
the four-quadrant power module structure also comprises a second module direct current side copper bar and a first module direct current side copper bar; one end of the module direct current side copper bar is connected with the capacitor copper bar I, and the other end of the module direct current side copper bar extends to the outer side of the four-quadrant power module structure; one end of the second copper bar on the direct current side of the module is connected with the second copper bar on the capacitor, and the other end of the second copper bar extends to the outer side of the four-quadrant power module structure.
Compared with the prior art, the utility model has the beneficial effects that the problems of heating of the internal elements of the module and heating of the metal frame are solved by the epoxy support beams and the water cooling pipelines in reasonable layout.
The beneficial effects of the utility model also include:
1. the panel is processed by adopting a 1.2mm aluminum-zinc-coated plate, the aluminum-zinc-coated plate has excellent performances of corrosion resistance, higher heat reflectivity, conductivity and the like, can meet the consistency of the potentials of the upper and lower frames of the module, reduces the influence of external radiation on the internal temperature of the module, and prolongs the service life of the module;
2. the frame is made of 3mm cold-rolled Q235-A material, has good molding appearance, and has certain mechanical strength, thereby playing a role in protecting the internal structure;
3. the copper bars between the valve strings are connected by double bolts, so that the valve strings are convenient to mount and dismount, are suitable for quick electric mounting connection of the four-quadrant power adjusting device, and are convenient to maintain; the unit controller is located whole module front side, is convenient for test, and the integrated circuit board pilot lamp of unit controller is towards the front side, and the test of being convenient for and maintainer look over the integrated circuit board condition.
Drawings
FIG. 1 is a schematic diagram of a novel four-quadrant power module architecture;
FIG. 2 is a cross-sectional view of a novel four-quadrant power module structure of the present utility model;
FIG. 3 is a rear cross-sectional view of the novel four-quadrant power module architecture of the present application;
FIG. 4 is a schematic diagram of a rear view of a novel four-quadrant power module structure of the present utility model;
FIG. 5 is a schematic diagram of the connection relationship between the copper bars of the novel four-quadrant power module structure;
FIG. 6 is a schematic view of a first frame weld in accordance with a preferred embodiment of the present utility model;
fig. 7 is a schematic structural view of a second frame welding member according to a preferred embodiment of the present utility model.
The reference numerals are:
1. a unit module; 2. a capacitor; 3. an outer frame; 4. a diode string; 5. IGCT strings; 6. an anode reactance; 7. a unit controller; 8. an epoxy support beam; 9. a first frame weldment; 10. a second frame weldment; 11. a panel; 12. a first water pipe; 13. a second water pipe; 14. a third water pipe; 15. a water pipe IV; a water pipe 16; 17. a water pipe six; 18. a water pipe seven; 19. a first water pipe assembly; 20. a second water pipe assembly; 21. a first capacitor copper bar; 22. an insulating separator; 23. a second capacitor copper bar; 24. a second module direct current side copper bar; 25. and a first copper bar on the direct current side of the module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described herein are merely some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are within the scope of the present utility model.
A novel four-quadrant power module structure comprising: a power module assembly 1 and a capacitor assembly 2, wherein the power module assembly 1 comprises an external frame 3, a diode string 4, an IGCT string 5, an anode reactance 6, a unit controller 7 and a water cooling pipeline; the outer frame 3 comprises a first frame weld 9, a second frame weld 10, an epoxy support beam 8 and a panel 11; the diode string 4 and the IGCT string 5 are respectively connected with the first frame welding piece 9 through M10 bolts, and the diode string 4 and the IGCT string 5 are connected through copper bars; the anode reactance 6 is connected with a radiator of the diode string 4 through a copper bar; the unit controller 7 is positioned at the front side of the power module structure, and the board card indicator lamp of the unit controller 7 faces to the front side; the capacitor assembly 2 comprises a first capacitor copper bar 21, a second capacitor copper bar 23 and an insulating partition 22 made of sheet molding compound.
Preferably, the first frame welding 9 is arranged at the top of the four-quadrant power module structure, the second frame welding 10 is arranged at the top of the four-quadrant power module structure, and the first frame welding 9 and the second frame welding 10 are fixedly connected and supported through four epoxy support beams 8.
Preferably, the first frame welding 9 and the second frame welding 10 are made of 3mm cold-rolled Q235-A materials.
Preferably, the epoxy support beam 8 is made of 22mm by 50mm epoxy SMC material.
Preferably, the outer frame 3 is peripherally covered with a panel 11, wherein the panel 11 is an aluminium-zinc-coated plate having a thickness of 1.2 mm.
Preferably, the second frame is welded 10 at the bottom bearing part, and the bearing is fixed by adopting a wheel seat, a shaft sleeve, a flat washer and a spring washer; wherein the wheel seat and the shaft sleeve are made of 304 stainless steel.
Preferably, the water cooling pipeline comprises six first water pipes 12, second water pipes 13, seven third water pipes 14, fourth water pipes 15, fifth water pipes 16, sixth water pipes 17, two seventh water pipes 18, first water pipe assemblies 19 and second water pipe assemblies 20, wherein the first water pipe assemblies 19 and the second water pipe assemblies 20 are arranged on the top of the outer frame 3 in parallel, and the outer side joints of the first water pipe assemblies 19 and the second water pipe assemblies 20 extend to the outer side of the four-quadrant power module structure.
Preferably, the pipeline materials of the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15, the fifth water pipe 16, the sixth water pipe 17 and the seventh water pipe 18 are FEP.
Preferably, PVDF is selected as the material of the first water pipe assembly 19 and the second water pipe assembly 20.
Preferably, the capacitor assembly 2 comprises two 12.5mf capacitors, a first capacitor copper bar 21 and a second capacitor copper bar 23 are arranged at the terminals of the capacitor assembly, and an insulating partition 22 is arranged between the first capacitor copper bar 21 and the second capacitor copper bar 23;
the four-quadrant power module structure further comprises a second module direct current side copper bar 25 and a first module direct current side copper bar 25; one end of the first module direct current side copper bar 25 is connected with the first capacitor copper bar 21, and the other end of the first module direct current side copper bar extends to the outer side of the four-quadrant power module structure; one end of the second copper bar 24 on the direct current side of the module is connected with the second copper bar 23 on the capacitor, and the other end of the second copper bar extends to the outer side of the four-quadrant power module structure.
The water cooling pipeline comprises 6 first water pipes 12, 1 second water pipes 13, 7 third water pipes 14, 1 fourth water pipe 15, 1 fifth water pipe 16, 1 sixth water pipe 17, 2 seventh water pipes 18, a first water pipe assembly 19 and a second water pipe assembly 20, wherein the first water pipe assembly 19 and the second water pipe assembly 20 are arranged at the top of the outer frame 3 in parallel, and the outer joints of the first water pipe assembly 19 and the second water pipe assembly 20 extend to the outer side of the four-quadrant power module structure.
The unit controller 7 is located on the front side of the whole module, and the board card indicator lamp of the unit controller 7 is directed to the front side. The pipeline materials of the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15, the fifth water pipe 16, the sixth water pipe 17 and the seventh water pipe 18 are FEP. One end of the first water pipe 12 is connected with the first water pipe assembly 19, and the other end of the first water pipe is connected with the IGCT string; one end of the first water pipe 12 is connected with the second water pipe assembly 20, and the other end is connected with the IGCT string; one end of the first water pipe 12 is connected with the second water pipe assembly 20, and the other end is connected with the diode string 4; the second water pipe 13 is connected with the anode reactor and the second water pipe assembly 20; the third water pipe 14 is connected with different radiators inside the IGCT string or the diode string 4; the fourth water pipe 15 is connected with an anode reactor and a diode string; the fifth water pipe 16 is connected with two radiators of the IGCT string; the sixth water pipe is 17 connected with the first water pipe assembly 19 and the diode string 4; one end of the water pipe seven 18 is connected with the water pipe assembly one 19, and the other end of the water pipe seven is connected with the diode string 4.
Referring to fig. 1-7, the overall structure of a four-quadrant power module according to the present utility model is schematically shown.
Preferably, in this embodiment, the capacitor part includes two 12.5mf electric capacities, two copper bars and an insulating partition board are installed to terminal department, and the effect of copper bars is to make two electric capacities parallel processing in order to satisfy engineering demand, and insulating partition board is made by epoxy material SMC, and SMC has dampproofing and waterproofing, high, the toughness is good, long service life, and electrical insulation can be good, can satisfy the electric insulation distance between electric capacity dipolar.
Referring to fig. 2, the overall structure of the four-quadrant power module structure according to the present utility model is schematically shown. The power module part is composed of an external frame 3, a diode string 4, an IGCT string 5, an anode reactance 6, and a cell controller 7.
The outer frame part comprises a first frame welding piece 9, a second frame welding piece 10, an epoxy vertical beam 8 and a panel 11. The periphery of the outer frame 3 is covered with a panel 11, wherein the panel 11 at the front side of the four-quadrant power module structure is provided with a plurality of heat dissipation holes for reducing the internal temperature of the four-quadrant power module structure; the front side of the panel 11 is also provided with anode reactance holes.
In the utility model, preferably, the whole materials of the first frame welding piece 9 and the second frame welding piece 10 are welded by 3mm cold-rolled Q235-A materials, wherein the 3mm cold-rolled Q235-A materials have better molding appearance and certain mechanical strength.
Preferably, the epoxy vertical beam is formed by adopting 22mm of 50mm SMC, the phenomenon that the inside of the four-quadrant power module structure heats due to overlarge current at two ends of a capacitor is effectively avoided, and the temperature inside the four-quadrant power module structure is far lower than that of a metal frame after the epoxy vertical beam is adopted through experimental comparison.
Preferably, the panel is formed by processing a 1.2mm aluminum-zinc-coated plate, and the aluminum-zinc-coated plate has excellent performances of corrosion resistance, higher heat reflectivity, conductivity and the like, can meet the consistency of the potentials of the upper and lower frames of the module, reduces the influence of external radiation on the internal temperature of the module, and prolongs the service life of the module.
Preferably, the bearing part at the bottom of the second frame welding part is fixed by adopting a wheel seat, a shaft sleeve, a flat gasket and a spring gasket, so that the whole module can stably move, and the bottom is uniformly stressed. Wherein the wheel seat and the shaft sleeve are made of 304 stainless steel, and the 304 stainless steel has good wear resistance and thermal expansion coefficient and can run for a long time.
Preferably, the IGCT string is fixed and supported by an epoxy frame, so that stress on the device caused by dead weight sinking of the IGCT string is reduced, and the service life of the device is prolonged.
Preferably, the PC work piece, i.e. the polycarbonate work piece, is fixed inside the epoxy vertical beam for secondary routing.
Preferably, the copper bar connection between the diode string 4 and the IGCT string 5 adopts double-bolt connection, so that the installation and the disassembly are convenient.
Preferably, a water pipe connector and a water pipe plug are arranged below the first water pipe assembly 19, so that water is conveniently discharged from a water cooling pipeline inside the module.
Preferably, the outside joints of the first water pipe assembly 19 and the second water pipe assembly 20 are extended to the outside of the module, so that other devices in the module are prevented from being damaged due to water leakage.
Preferably, the unit controller is located whole module front side, is convenient for test, and the integrated circuit board pilot lamp is towards the front side, and test and maintainer of being convenient for look over the integrated circuit board condition.
Compared with the prior art, the utility model has the beneficial effects that the problems of heating of the internal elements of the module and heating of the metal frame are solved by the epoxy support beams and the water cooling pipelines in reasonable layout.
The beneficial effects of the utility model also include:
1. the panel is processed by adopting a 1.2mm aluminum-zinc-coated plate, the aluminum-zinc-coated plate has excellent performances of corrosion resistance, higher heat reflectivity, conductivity and the like, can meet the consistency of the potentials of the upper and lower frames of the module, reduces the influence of external radiation on the internal temperature of the module, and prolongs the service life of the module;
2. the frame is made of 3mm cold-rolled Q235-A material, has good molding appearance, and has certain mechanical strength, thereby playing a role in protecting the internal structure;
3. the copper bars between the valve strings are connected by double bolts, so that the valve strings are convenient to mount and dismount, are suitable for quick electric mounting connection of the four-quadrant power adjusting device, and are convenient to maintain; the unit controller is located whole module front side, is convenient for test, and the integrated circuit board pilot lamp of unit controller is towards the front side, and the test of being convenient for and maintainer look over the integrated circuit board condition.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (11)
1. A novel four-quadrant power module structure is characterized in that,
comprising the following steps: the power module assembly (1) and the capacitor assembly (2), wherein the power module assembly (1) comprises an external frame (3), a diode string (4), an IGCT string (5), an anode reactor (6), a unit controller (7) and a water cooling pipeline; the outer frame (3) comprises a first frame welding piece (9), a second frame welding piece (10), an epoxy support beam (8) and a panel (11); the diode string (4) and the IGCT string (5) are respectively connected with the first frame welding piece (9) through M10 bolts, and the diode string (4) and the IGCT string (5) are connected through copper bars; the anode reactance (6) is connected with a radiator of the diode string (4) through a copper bar; the unit controller (7) is positioned at the front side of the power module structure, and a board card indicator lamp of the unit controller (7) faces to the front side; the capacitor assembly (2) comprises a first capacitor copper bar (21), a second capacitor copper bar (23) and an insulating partition plate (22) made of sheet molding plastic.
2. The novel four-quadrant power module structure of claim 1, wherein:
the first frame welding piece (9) is arranged at the top of the four-quadrant power module structure, the second frame welding piece (10) is arranged at the top of the four-quadrant power module structure, and the first frame welding piece (9) and the second frame welding piece (10) are fixedly connected and supported through four epoxy support beams (8).
3. The novel four-quadrant power module structure of claim 2, wherein:
the first frame welding piece (9) and the second frame welding piece (10) adopt 3mm cold-rolled Q235-A materials.
4. The novel four-quadrant power module structure of claim 2, wherein:
the epoxy support beam (8) is made of 22mm 50mm epoxy SMC materials.
5. The novel four-quadrant power module structure of claim 1, wherein:
the periphery of the outer frame (3) is covered with a panel (11), wherein the panel (11) is an aluminum-zinc-coated plate with the thickness of 1.2 mm.
6. A novel four-quadrant power module structure according to claim 3, characterized in that:
the bottom bearing part of the second frame welding piece (10) is provided with a bearing fixed by adopting a wheel seat, a shaft sleeve, a flat washer and a spring washer; wherein the wheel seat and the shaft sleeve are made of 304 stainless steel.
7. The novel four-quadrant power module structure of claim 1, wherein:
the water cooling pipeline comprises six water pipes I (12), a water pipe II (13), seven water pipes III (14), a water pipe IV (15), a water pipe V (16), a water pipe VI (17), two water pipes V (18), a water pipe assembly I (19) and a water pipe assembly II (20), wherein the water pipe assembly I (19) and the water pipe assembly II (20) are arranged at the top of the outer frame (3) in parallel, and the outer side joints of the water pipe assembly I (19) and the water pipe assembly II (20) are prolonged to the outer side of the four-quadrant power module structure.
8. The novel four-quadrant power module structure of claim 7, wherein:
the pipeline materials of the first water pipe (12), the second water pipe (13), the third water pipe (14), the fourth water pipe (15), the fifth water pipe (16), the sixth water pipe (17) and the seventh water pipe (18) are FEP.
9. The novel four-quadrant power module structure of claim 7, wherein:
PVDF is selected as the material of the first water pipe assembly (19) and the second water pipe assembly (20).
10. The novel four-quadrant power module structure of claim 1, wherein:
the capacitor assembly (2) comprises two 12.5mf capacitors, a first capacitor copper bar (21) and a second capacitor copper bar (23) are arranged at the terminals of the capacitor assembly, and an insulating partition plate (22) is arranged between the first capacitor copper bar (21) and the second capacitor copper bar (23).
11. The novel four-quadrant power module structure of claim 10, wherein:
the four-quadrant power module structure further comprises a module direct current side copper bar II (24) and a module direct current side copper bar I (25); one end of the first copper bar (25) on the direct current side of the module is connected with the first copper bar (21) on the capacitor, and the other end of the first copper bar extends to the outer side of the four-quadrant power module structure; one end of the second copper bar (24) on the direct current side of the module is connected with the second copper bar (23) on the capacitor, and the other end of the second copper bar extends to the outer side of the four-quadrant power module structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202321593867.3U CN220527897U (en) | 2023-06-21 | 2023-06-21 | Novel four-quadrant power module structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321593867.3U CN220527897U (en) | 2023-06-21 | 2023-06-21 | Novel four-quadrant power module structure |
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| CN220527897U true CN220527897U (en) | 2024-02-23 |
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| CN202321593867.3U Active CN220527897U (en) | 2023-06-21 | 2023-06-21 | Novel four-quadrant power module structure |
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