CN109412431A - Lamination copper bar and Three-phase high-power inverter - Google Patents
Lamination copper bar and Three-phase high-power inverter Download PDFInfo
- Publication number
- CN109412431A CN109412431A CN201811397283.2A CN201811397283A CN109412431A CN 109412431 A CN109412431 A CN 109412431A CN 201811397283 A CN201811397283 A CN 201811397283A CN 109412431 A CN109412431 A CN 109412431A
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- Prior art keywords
- copper bar
- phase
- lamination
- bus
- negative
- Prior art date
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 354
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 354
- 239000010949 copper Substances 0.000 title claims abstract description 354
- 238000003475 lamination Methods 0.000 title claims abstract description 138
- 238000009413 insulation Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 38
- 238000009434 installation Methods 0.000 claims description 7
- 230000003447 ipsilateral effect Effects 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
Abstract
The embodiment of the invention provides a kind of lamination copper bar and Three-phase high-power inverters, the lamination copper bar includes that the positive copper bar of bus, the negative copper bar of bus, U phase being fixed together by insulating fixing piece export copper bar, V phase exports copper bar, W phase exports copper bar and six insulation boards, and the positive copper bar of the bus, the negative copper bar of bus, U phase export copper bar, V phase exports copper bar and W phase exports copper bar and is sandwiched between two adjacent insulation boards respectively；First side surface of the lamination copper bar has the first terminals subgroup, the second terminals subgroup and third terminals subgroup, and the second side surface of the lamination copper bar has the 4th terminals subgroup, the 5th terminals subgroup and the 6th terminals subgroup.Six half bridge arm high power switch modules of single tube are respectively installed in two planes by the embodiment of the present invention by five layer laminate copper bars, the power density of inverter are substantially increased, so as to use in the industry harsh to space requirement.
Description
Technical field
The present invention relates to inverter fields, more specifically to a kind of lamination copper bar and Three-phase high-power inverter.
Background technique
In low-pressure high-power MW class inverter, the voltage on DC bus is converted by six semiconductor switch pipes
For UVW three-phase alternating current, as shown in Figure 1.
In specific implementation, above-mentioned inverter can be used using two-tube IGBT (Insulated Gate as shown in Figure 2
Bipolar Transistor, insulated gate bipolar transistor) carry out voltage conversion.In the inverter, each two-tube IGBT packet
Bridge arm switching tube and lower bridge arm switching tube are included, and wiring is carried out by the positive and negative two layer laminates copper bar of bus.However, above-mentioned use
The inverter of two-tube IGBT and the positive and negative two layer laminates structure of copper bar of bus are often needed since the power of single two-tube IGBT is smaller
It wants multiple progress parallel connections to meet power requirement, so that the area of the positive and negative two layer laminates copper bar of bus is larger, and causes inverse
The power density for becoming device is relatively small, such as 1.2 megawatts of inverter, the width of cabinet body is in 800mm or more, very much
Using limited in the industry harsh to space requirement.
In addition, half bridge arm high-power IGBT of single tube as shown in Figure 3 also can be used in low-pressure high-power MW class inverter
Carry out voltage conversion, each half bridge arm high-power IGBT of single tube includes three switching tubes in parallel, and using bus+, bus-,
Three layer laminate structure of copper bar of output single-phase.But using in the structure inverter, multiple half bridge arm high-power IGBTs of single tube are located at same
One mounting surface equally exists the lesser problem of power density, and in MW class inverter, cabinet body occupied space is larger.
Summary of the invention
The embodiment of the present invention is for above-mentioned low-pressure high-power MW class inverter power density is smaller, can not want to space
Problem used in harsh industry is sought, a kind of lamination copper bar and Three-phase high-power inverter are provided.
The technical solution that the present invention solves above-mentioned technical problem is to provide a kind of lamination copper bar, including is fixed by insulation
The positive copper bar of the bus that part is fixed together, the negative copper bar of bus, U phase export copper bar, V phase exports copper bar, W phase exports copper bar and six
A insulation board, and the positive copper bar of the bus, the negative copper bar of bus, U phase export copper bar, V phase exports copper bar and exports copper bar difference with W phase
It is sandwiched between two adjacent insulation boards；First side surface of the lamination copper bar has the length direction along the lamination copper bar
It is arranged and is respectively used to the first terminals subgroup, the second terminals subgroup and the third connecting terminal of connection power unit module
Group, and there is the length direction along the lamination copper bar to be arranged and be respectively used to connection function for the second side surface of the lamination copper bar
The 4th terminals subgroup, the 5th terminals subgroup and the 6th terminals subgroup of rate unit module.
Preferably, the first terminals subgroup includes the first positive input terminal being conductively connected with the positive copper bar of the bus
And the first U phase output terminals of copper bar conductive connection are exported with the U phase；
The second terminals subgroup include the second positive input terminal being conductively connected with the positive copper bar of the bus and with
The V phase exports the first V phase output terminals of copper bar conductive connection；
The third terminals subgroup include the third positive input terminal being conductively connected with the positive copper bar of the bus and with
The W phase exports the first W phase output terminals of copper bar conductive connection；
The 4th terminals subgroup include the first negative input terminal being conductively connected with the negative copper bar of the bus and with
The U phase exports the 2nd U phase output terminals of copper bar conductive connection；
The 5th terminals subgroup include the second negative input terminal being conductively connected with the negative copper bar of the bus and with
The V phase exports the 2nd V phase output terminals of copper bar conductive connection；
The 6th terminals subgroup include the third negative input terminal being conductively connected with the negative copper bar of the bus and with
The W phase exports the 2nd W phase output terminals of copper bar conductive connection.
Preferably, one of long edge position of the lamination copper bar has first capacitor terminal plate and the second capacitor wiring
Plate, and the first capacitor terminal plate and the second capacitor terminal plate be not towards the ipsilateral of the stack bus bar；The first capacitor
Terminal plate is connected perpendicularly to the long side of the positive copper bar of the bus, the second capacitor terminal plate is connected perpendicularly to the negative copper of the bus
The long side of row；The first capacitor terminal plate and the second capacitor terminal plate are respectively provided with multiple for connecting the capacitor of capacitor pin
Connecting terminal.
Preferably, there is positive direct-current input board and negative direct current input board, and described at the first short side of the lamination copper bar
Positive direct-current input board and negative direct current input board be not towards the ipsilateral of the stack bus bar；The positive direct-current input board is connected perpendicularly to
The first short side, the negative direct current input board of the positive copper bar of bus are connected perpendicularly to the first short side of the negative copper bar of the bus.
Preferably, the V phase exports copper bar and is located at the U phase and exports copper bar exports between copper bar with W phase, the lamination copper
There is U phase output board, V phase output board and W phase output board, and the U phase output board is connected perpendicularly at the second short side of row
The U phase exports the second short side of copper bar, the W phase output board is connected perpendicularly to the W phase and exports the second short side of copper bar, institute
It states V phase output board and is connected to the V phase and exports the second short side of copper bar and export copper bar with the V phase and be in the same plane；
The U phase output board and W phase output board be not towards the ipsilateral of the stack bus bar.
Preferably, the positive copper bar of the bus, the negative copper bar of bus, U phase export copper bar, V phase exports copper bar, W phase exports copper bar
It is arranged successively from the first side to second side of the lamination copper bar, and the V phase exports the length of the long side of copper bar less than the U
The mutually length of the long side of output copper bar, the length that the W phase exports the long side of copper bar are less than the long side that the V phase exports copper bar
Length.
Preferably, first positive input terminal, the second positive input terminal, third positive input terminal are respectively by being welded in
The first hollow stud for stating the positive copper bar of bus is constituted, and the first end of first hollow stud is through the of the lamination copper bar
Side simultaneously has for overlapped the stud plane of the binding post with power unit module, second end through the of the lamination copper bar
Two sides are simultaneously fixedly connected with the first nut；
First negative input terminal, the second negative input terminal, third negative input terminal are respectively by being welded in the bus
Second hollow stud of negative copper bar is constituted, and the first end of second hollow stud through the lamination copper bar the first side with
Second nut is fixedly connected, second end through the lamination copper bar second side and have for the wiring with power unit module
Column overlapped stud plane；
The first U phase output terminals and the 2nd U phase output terminals are hollow by being welded on the third that the U phase exports copper bar
Stud is constituted, the first end of the third hollow stud through first side of lamination copper bar and have for power cell mould
The binding post of block overlapped stud plane, second end through the lamination copper bar second side and have and power unit module
Binding post overlapped stud plane；
The first V phase output terminals and the 2nd V phase output terminals export the 4th hollow of copper bar by being welded on the V phase
Stud is constituted, the first end of the 4th hollow stud through first side of lamination copper bar and have for power cell mould
The binding post of block overlapped stud plane, second end through the lamination copper bar second side and have for power cell mould
The binding post of block overlapped stud plane；
The first W phase output terminals and the 2nd W phase output terminals export the 5th hollow of copper bar by being welded on the W phase
Stud is constituted, the first end of the 5th hollow stud through first side of lamination copper bar and have for power cell mould
The binding post of block overlapped stud plane, second end through the lamination copper bar second side and have for power cell mould
The binding post of block overlapped stud plane.
Preferably, first hollow stud, the second hollow stud, third hollow stud, the 4th hollow stud, the 5th sky
Have between heart stud and the copper bar of non-solder and keeps away safety felt pad.
The embodiment of the present invention also provides a kind of Three-phase high-power inverter, including cabinet body and six big function of half bridge arm of single tube
Rate switch module, the Three-phase high-power inverter further includes lamination copper bar as described above, and the lamination copper bar is described
Vertical installation in cabinet body；Wherein, three half bridge arm high power switch modules of single tube are installed on the first side of the lamination copper bar, and
It is conductively connected respectively with the first terminals subgroup, the second terminals subgroup and third terminals subgroup；The other three list
Half bridge arm high power switch module of pipe is installed on second side of the lamination copper bar, and respectively with the 4th terminals subgroup,
5th terminals subgroup and the 6th terminals subgroup are conductively connected.
Preferably, the lamination copper bar is installed in the cabinet body in a manner of perpendicular to the door-plate of the cabinet body, described
There is blower, the first air duct and the second air duct in cabinet body, each half bridge arm high power switch module of single tube includes shell,
And there are the first opening and the second opening on the shell；Wherein:
The blower is located at the lower section of the lamination copper bar, second air duct is disposed adjacent with the backboard of the cabinet body,
First air duct is disposed adjacent with second air duct；
The air inlet in first air duct is located at the air outlet of the blower, and first air duct includes multiple air outlets,
And the first opening of each air outlet in first air duct and the shell of a half bridge arm high power switch module of single tube
Connection；
The air outlet in second air duct is located at the back or top of the cabinet body, and second air duct includes multiple air inlets
Mouthful, and each air inlet in second air duct is opened with the second of the shell of a half bridge arm high power switch module of single tube
Mouth connection.
Lamination copper bar and Three-phase high-power inverter provided in an embodiment of the present invention have the advantages that by five layers
Six half bridge arm high power switch modules of single tube are respectively installed in two planes by lamination copper bar, substantially increase inverter
Power density, so as to be used in the industry harsh to space requirement.
Also, in above-mentioned inverter, each half bridge arm high power switch module of single tube forms an independent power module
Unit, only with separately maintaining when maintenance, weight is lighter.
In addition, making cabinet body module hot by five layer laminate copper bars in the Three-phase high-power inverter of the embodiment of the present invention
Amount is more dispersed, to only need a blower that heat dissipation can be realized.
Detailed description of the invention
Fig. 1 is the circuit topology figure of three-phase inverter；
Fig. 2 is the circuit topology figure of two-tube IGBT；
Fig. 3 is the circuit topology figure of half bridge arm high-power IGBT of single tube；
Fig. 4 is the schematic diagram of lamination copper bar provided in an embodiment of the present invention；
Fig. 5 is the decomposition diagram of lamination copper bar provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of the installation capacitor of lamination copper bar provided in an embodiment of the present invention；
Fig. 7 is the side schematic view of the installation capacitor of lamination copper bar provided in an embodiment of the present invention；
Fig. 8 is the partial cutaway schematic of lamination copper bar provided in an embodiment of the present invention；
Fig. 9 is another partial cutaway schematic of lamination copper bar provided in an embodiment of the present invention；
Figure 10 is the schematic diagram of Three-phase high-power inverter provided in an embodiment of the present invention；
Figure 11 is half bridge arm high power switch module of single tube in Three-phase high-power inverter provided in an embodiment of the present invention
Scheme of installation；
Figure 12 is half bridge arm high power switch module of single tube in Three-phase high-power inverter provided in an embodiment of the present invention
Schematic diagram；
Figure 13 is another half bridge arm high power switch mould of single tube in Three-phase high-power inverter provided in an embodiment of the present invention
The schematic diagram of block；
Figure 14 is the schematic diagram of radiator portion in Three-phase high-power inverter provided in an embodiment of the present invention；
Figure 15 is the side schematic view of radiator portion in Three-phase high-power inverter provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It as shown in figs. 4-7, is the structural schematic diagram of lamination copper bar provided in an embodiment of the present invention, which can apply
In inverter, input and output wiring is realized.The lamination copper bar of the present embodiment includes the positive copper bar 10 of bus, the negative copper bar 20 of bus, U
Mutually output copper bar 30, V phase exports copper bar 40, W phase exports copper bar 50 and six insulation boards 60, the positive copper bar 10 of above-mentioned bus, female
The negative copper bar 20 of line, U phase export copper bar 30, V phase exports copper bar 40, W phase exports copper bar 50 and six insulation boards 60 pass through insulation
Fixing piece 70 is fixed together, and the positive copper bar 10 of bus, the negative copper bar 20 of bus, U phase exports copper bar 30, V phase exports copper bar 40 and W
Mutually output copper bar 50 is sandwiched between two adjacent insulation boards 60 that (i.e. the positive copper bar 10 of bus, the negative copper bar 20 of bus, U phase are defeated respectively
Copper bar 30, V phase export copper bar 40 out, W phase exports copper bar 50 and is located in Different Plane).First side surface of above-mentioned lamination copper bar
It is arranged with the length direction along the lamination copper bar and is respectively used to the first terminals subgroup of connection power unit module, second
Terminals subgroup and third terminals subgroup, and the second side surface of lamination copper bar has the length direction along the lamination copper bar
It is arranged and is respectively used to the 4th terminals subgroup, the 5th terminals subgroup and the 6th connecting terminal of connection power unit module
Group.
First terminals subgroup, the second terminals subgroup and third terminals subgroup can be separately connected the upper bridge of inverter
Three of inverter upper bridge arm power unit modules can be installed to the first of above-mentioned lamination copper bar by arm power unit module
Side；4th terminals subgroup, the 5th terminals subgroup and the 6th terminals subgroup can then be separately connected the lower bridge arm of inverter
Three lower bridge arm power unit modules of inverter can be installed to second side of above-mentioned lamination copper bar by power unit module.
The above-mentioned lamination structure of copper bar with five layers of copper bar, since lamination quantity is more, not only overall stiffness is very good, can meet Gao Zhen
Dynamic occasion uses, and the dispersion of six and half bridge arm power unit modules is installed to two planes by above-mentioned lamination copper bar, is mentioned significantly
The high power density of inverter, so as to be used in the industry harsh to space requirement.In addition, opposite upper and lower bridge arm one
Power module for, half bridge arm power unit module is lighter, more easy to maintain.
Specifically, above-mentioned first terminals subgroup specifically may include the first positive input being conductively connected with the positive copper bar 10 of bus
Terminal 103 and the first U phase output terminals 302 that the conductive connection of copper bar 30 is exported with U phase.Second terminals subgroup includes and mother
Second positive input terminal 104 of the positive conductive connection of copper bar 10 of line and the first V phase for exporting the conductive connection of copper bar 40 with V phase export
Terminal 402.Third terminals subgroup include the third positive input terminal 105 being conductively connected with the positive copper bar 10 of bus and with W phase
Export the first W phase output terminals 502 that copper bar 50 is conductively connected.4th terminals subgroup includes conductive even with the negative copper bar 20 of bus
The first negative input terminal 203 for connecing and the 2nd U phase output terminals 303 that the conductive connection of copper bar 50 is exported with U phase.5th wiring
Terminal group includes the second negative input terminal 204 being conductively connected with the negative copper bar 20 of bus and exports 40 conduction of copper bar even with V phase
The 2nd V phase output terminals 403 connect.6th terminals subgroup includes the third negative input end being conductively connected with the negative copper bar 20 of bus
Son 205 and the 2nd W phase output terminals 503 that the conductive connection of copper bar 50 is exported with W phase.
For realize inverter in bus capacitor 80 installation, lamination copper bar provided in an embodiment of the present invention one of them
Long edge position has first capacitor terminal plate 102 and the second capacitor terminal plate 202, and (first capacitor terminal plate 102 and the second capacitor connect
Line plate 202 is in the same plane), and first capacitor terminal plate 102 and the second capacitor terminal plate 202 towards lamination copper bar not
It is ipsilateral.Above-mentioned first capacitor terminal plate 102 is connected perpendicularly to a long side of the positive copper bar 10 of bus, the second capacitor terminal plate 202
It is connected perpendicularly to a long side of the negative copper bar 20 of bus, and first capacitor terminal plate 102 and the second capacitor terminal plate 202 difference
With multiple for connecting the capacitor connecting terminal of the pin of bus capacitor 80.By above structure, bus capacitor 80 may make
Mounting surface improve perpendicular to the mounting plane of power unit module to reduce area of the lamination copper bar in same dimension
The power density of inverter.Particularly, when the positive copper bar 10 of bus is located at the first side of the negative copper bar 20 of bus, first capacitor wiring
Plate 102 can be bent to form from the long side of the positive copper bar 10 of bus to the first side of lamination copper bar is vertical, and the second capacitor terminal plate 02 is then
It can be bent to form from the long side of the negative copper bar 20 of bus to second side of lamination copper bar is vertical.
Preferably, above-mentioned lamination copper bar may be accomplished by direct current input: at the first short side of lamination copper bar
(positive direct-current input board 101 and negative direct current input board 201 are positioned at same for setting positive direct-current input board 101 and negative direct current input board 201
In plane), and positive direct-current input board 101 and negative direct current input board 201 be not towards the ipsilateral of lamination copper bar.Above-mentioned positive direct-current input
Plate 101 is connected perpendicularly to the first short side of the positive copper bar 10 of bus, negative direct current input board 201 is connected perpendicularly to the negative copper bar 20 of bus
First short side.In this way, making the direct current importation of lamination copper bar perpendicular to the mounting plane of power unit module, further subtract
Area of the small lamination copper bar in same dimension, improves the power density of inverter.Similarly, when the positive copper bar 10 of bus is located at mother
When the first side of the negative copper bar 20 of line, above-mentioned positive direct-current input board 101 can be from the first short side of the positive copper bar 10 of bus to lamination copper bar
The first side it is vertical be bent to form, negative direct current input board 201 can be from the first short side of the negative copper bar 20 of bus to the of lamination copper bar
Two sides are vertical to be bent to form.
In above-mentioned lamination copper bar, V phase export copper bar 40 be located at U phase export copper bar 30 and W phase export copper bar 50 (copper bar it
Between have insulation board 60) between.Similarly, above-mentioned lamination copper bar may be accomplished by three-phase alternating current output: in lamination
U phase output board 301, V phase output board 401 and W phase output board 501 (U phase output board 301 and W are set at the second short side of copper bar
Phase output board 501 is in the same plane), and U phase output board 301 is connected perpendicularly to the second short side, the W that U phase exports copper bar 30
Phase output board 501 is connected perpendicularly to that W phase exports the second short side of copper bar 50, V phase output board 401 is connected to V phase and exports copper bar 40
The second short side and export copper bar 40 with V phase and be in the same plane.Also, above-mentioned U phase output board 301, W phase output board 501
Towards the not ipsilateral of lamination copper bar.In this way, making the three-phase alternating current output par, c of lamination copper bar perpendicular to power unit module
Mounting plane further decreases area of the lamination copper bar in same dimension, improves the power density of inverter.Particularly, work as U
When mutually output copper bar 30 is located at W phase and exports the first side of copper bar 50, above-mentioned U phase output board 301 can be exported the of copper bar 30 by U phase
First side of two short sides to lamination copper bar is vertical to be bent to form, W phase output board 501 can be exported the second short side of copper bar 50 by W phase
To lamination copper bar second side it is vertical be bent to form, V phase output board 401 can be exported copper bar 40 by V phase and be extended to form (or by welding
The connecting plate for exporting copper bar 40 to V phase is constituted).
Specifically, the positive copper bar 10 of above-mentioned bus, the negative copper bar 20 of bus, U phase exports copper bar 30, V phase exports copper bar 40, W phase
Output copper bar 50 is arranged successively from the first side to second side of lamination copper bar, and the length of the positive copper bar 10 of bus, the negative copper bar 20 of bus
The equal length on side, the length that U phase exports the long side of copper bar 30 can be slightly less than the length of the long side of the negative copper bar 20 of bus, and V phase is defeated
The length of the long side of copper bar 40 is less than the length that U phase exports the long side of copper bar 30 out, and the length that W phase exports the long side of copper bar 50 is small
The length of the long side of copper bar 40 is exported in V phase.With this configuration, the material that can save lamination copper bar itself, reduces cost.
As shown in connection with fig. 8, above-mentioned first positive input terminal 103, the second positive input terminal 104, third positive input terminal 105
It can be made of respectively the first hollow stud 71 for being welded in the positive copper bar 10 of bus, and the first end of the first hollow stud 71 is through folded
First side of layer copper bar and have binding post overlapped the stud plane for the power unit module with the first side of lamination copper bar,
Second end through lamination copper bar second side and be fixedly connected with the first nut 77.Above-mentioned first hollow stud 71 not only can be real
Now the bus positive voltage of the upper bridge arm power unit module of the first side of lamination copper bar is exported, and five layers of copper bar can be fastened, is mentioned
The bond strength of high lamination copper bar.To meet safety requirement, copper bar (the i.e. such as bus of above-mentioned first hollow stud 71 and non-solder
Negative copper bar 20, U phase export copper bar 30, V phase exports copper bar 40, W phase exports copper bar 50) between have avoid safety dead ring 76.
Similarly, the first negative input terminal 203, the second negative input terminal 204, third negative input terminal 205 are respectively by welding
The second hollow stud 72 for being connected to the negative copper bar 20 of bus is constituted, and the first end of second hollow stud 72 is through lamination copper bar
First side is fixedly connected with the second nut 78, second end through lamination copper bar second side and have for lamination copper bar second
The binding post of the power unit module of side overlapped stud plane (second end can also be fixedly connected with second nut 78).Together
Sample, the bus of the lower bridge arm power unit module to lamination copper bar second side not only may be implemented in above-mentioned second hollow stud 72
Negative voltage output, and five layers of copper bar can be fastened, improve the bond strength of lamination copper bar.To meet safety requirement, above-mentioned second
(i.e. the positive copper bar 10 of bus, U phase export copper bar 30 to the copper bar of hollow stud 72 and non-solder, V phase exports copper bar 40, W phase exports copper
It arranges to have between 50) and avoids safety dead ring 76.
As shown in connection with fig. 9, the first W phase output terminals 502 can export copper by being welded on W phase with the 2nd W phase output terminals 503
The 5th hollow stud 75 of row 50 is constituted, and the first side and having of the first end of the 5th hollow stud 75 through lamination copper bar is used
In binding post overlapped the stud plane of the power unit module with the first side of lamination copper bar, second end through the of lamination copper bar
Two sides simultaneously have binding post overlapped stud plane for the power unit module with lamination copper bar second side.To meet safety
It is required that (i.e. the positive copper bar 10 of bus, the negative copper bar 20 of bus, U phase export copper bar to the copper bar of above-mentioned 5th hollow stud 75 and non-solder
30, V phase exports copper bar 40) between have avoid safety dead ring 76.
Similarly, the first U phase output terminals 302 can export copper bar 30 by being welded on U phase with the 2nd U phase output terminals 303
Third hollow stud constitute, the first side and having of the first end of the third hollow stud through lamination copper bar is used for and lamination
The binding post of the power unit module of the first side of copper bar overlapped stud plane, second end through lamination copper bar second side and tool
The binding post for having for the power unit module with lamination copper bar second side overlapped stud plane.To meet safety requirement, on
It states between third hollow stud and the copper bar (i.e. the positive copper bar 10 of bus, the negative copper bar 20 of bus) of non-solder to have and avoids safety insulation
Ring.
Similarly, the first V phase output terminals 402 can export copper bar 40 by being welded on V phase with the 2nd V phase output terminals 403
The 4th hollow stud constitute, the first side and having of the first end of the 4th hollow stud through lamination copper bar is used for and lamination
The binding post of the power unit module of the first side of copper bar overlapped stud plane, second end through lamination copper bar second side and tool
The binding post for having for the power unit module with lamination copper bar second side overlapped stud plane.To meet safety requirement, on
It states and has between the 4th hollow stud and the copper bar (i.e. the positive copper bar 10 of bus, the negative copper bar 20 of bus, U phase export copper bar 30) of non-solder
Avoid safety dead ring.
It is above-mentioned first hollow stud 71, the second hollow stud 72, third hollow stud, the 4th hollow stud, the 5th hollow
Stud 75 can be respectively provided with axial thread through-hole, so as to use bolt by the power list of the first side of lamination copper bar and second side
The copper bar stud of element module and above-mentioned first hollow stud 71, the second hollow stud 72, third hollow stud, the 4th hollow spiral shell
Column, the 5th hollow stud 75 are reliably fixed, and guarantee that electrical connection is reliable.
It as shown in Figure 10, is the structural schematic diagram of Three-phase high-power inverter provided in an embodiment of the present invention, the three-phase is big
Power inverter can be applied to heavy-duty motor control.The Three-phase high-power inverter of the present embodiment includes cabinet body 90 and six
A half bridge arm high power switch module of single tube (bridge arm power unit module 81 i.e. in U phase, bridge arm power unit module 82 in V phase,
In W phase under bridge arm power unit module 83, U phase lower bridge arm power unit module 84, V phase lower bridge arm power unit module 85, W phase
Bridge arm power unit module 86), which further includes lamination copper bar as described above, and lamination copper bar is in cabinet
Vertical installation in body 90；Wherein, three half bridge arm high power switch modules of single tube (bridge arm power unit module 81, V i.e. in U phase
Bridge arm power unit module 82 in phase, bridge arm power unit module 83 in W phase) it is installed on the first side of lamination copper bar, and respectively
It is conductively connected with the first terminals subgroup, the second terminals subgroup and third terminals subgroup；Half bridge arm of the other three single tube
High power switch module (i.e. U phase lower bridge arm power unit module 84, V phase lower bridge arm power unit module 85, W phase lower bridge arm function
Rate unit module 86) be installed on second side of lamination copper bar, and respectively with the 4th terminals subgroup, the 5th terminals subgroup and
6th terminals subgroup is conductively connected.
Below by taking bridge arm power unit module 83 in W phase and W phase lower bridge arm power unit module 86 as an example, illustrate single tube half
Bridge arm high power switch module and its structure for being installed to lamination copper bar.
As shown in figure 12, bridge arm power unit module 83 includes shell 830 in W phase, and has air inlet (figure on the shell
In be not shown) and air outlet 8302, the bus just row of connection 831 exports connection row 833 with W phase and is separately fixed on shell, and female
Exporting on connection row 833 in the line just row of connection 831 with the positive mounting hole 8311 of bus, W phase, there is W phase to export mounting hole 8331.U
Bridge arm power unit module 81 in phase, the structure of bridge arm power unit module 82 and bridge arm power cell mould in above-mentioned W phase in V phase
Block 83 is similar.
As shown in figure 13, W phase lower bridge arm power unit module 86 includes shell 860, and has air inlet (figure on the shell
In be not shown) and air outlet 8602, the negative connection row 861 of bus exports connection row 863 with W phase and is separately fixed on shell, and female
Exporting on connection row 863 on the negative connection row 861 of line with the negative mounting hole 8611 of bus, W phase, there is W phase to export mounting hole 8631.U
Structure and the above-mentioned W phase lower bridge arm power cell mould of phase lower bridge arm power unit module 84, V phase lower bridge arm power unit module 85
Block 86 is similar.
As shown in figure 11, the W phase of W phase lower bridge arm power unit module 86 exports connection row 863 and exports peace by passing through W phase
Dress hole 8631 is simultaneously threadedly coupled to the bolt 79 of the 5th hollow stud 75 and is fixedly connected with lamination copper bar, and exports with the 2nd W phase
Terminal 503 is conductively connected.Similarly, the negative connection row 861 of the bus of W phase lower bridge arm power unit module 86 passes through negative across bus
The mounting hole 8611 and bolt for being threadedly coupled to the second hollow stud 72 is fixedly connected with lamination copper bar, and with third negative input end
Son 205 is conductively connected.Bridge arm power unit module 81 in U phase, bridge arm power unit module 82 in V phase, bridge arm power list in W phase
Element module 83, U phase lower bridge arm power unit module 84, V phase lower bridge arm power unit module 85 are fixed to lamination in a similar manner
Copper bar.
As shown in figs. 14-15, lamination copper bar is installed in cabinet body 90 in a manner of perpendicular to the door-plate of cabinet body 90, the cabinet body
There is blower 87, the first air duct 91 and the second air duct 92, and blower 87 is located at the lower section of lamination copper bar in 90, the second air duct and
The backboard 93 of cabinet body 90 is disposed adjacent, and the first air duct 91 is disposed adjacent with the second air duct 92.The air inlet in above-mentioned first air duct 91
Positioned at the air outlet of blower 87, which includes multiple air outlets, and each air outlet in first air duct 1 and one
First open communication of the shell of half bridge arm high power switch module of single tube.The air outlet in the second air duct 92 is located at the back of cabinet body 90
Portion or top, the second air duct 92 includes multiple air inlets, and each air inlet in the second air duct 92 and half bridge arm of single tube are big
Second open communication of the shell of power switching modules.
Every group of module needs the structure of a fan in relatively existing inverter, and above-mentioned Three-phase high-power inverter is due to adopting
With five layers of stacking copper bar, so that the module heat in cabinet body 90 more disperses, by independent curved air duct, so that cabinet body
Only need a high-power heat-dissipation blower can be to the radiator heat-dissipation of six half bridge arm high power switch modules of single tube, greatly in 90
Entire Three-phase high-power inverter cabinet body space is improved greatly, and the size of the Three-phase high-power inverter of 1.2MW is reached
High x depth x wide=2000x600x600mm.Compared with the inverter of existing three layer laminates structure of copper bar, the width of cabinet body 90 can subtract
Few 200mm.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of lamination copper bar, which is characterized in that the positive copper bar of bus, bus including being fixed together by insulating fixing piece are negative
Copper bar, U phase export copper bar, V phase exports copper bar, W phase exports copper bar and six insulation boards, and the positive copper bar of the bus, bus
Negative copper bar, U phase export copper bar, V phase exports copper bar and W phase exports copper bar and is sandwiched between two adjacent insulation boards respectively；It is described
There is the length direction along the lamination copper bar to be arranged and be respectively used to connection power cell mould for first side surface of lamination copper bar
The first terminals subgroup, the second terminals subgroup and the third terminals subgroup of block, and second side table of the lamination copper bar
Face have along the lamination copper bar length direction be arranged and be respectively used to connect power unit module the 4th terminals subgroup,
5th terminals subgroup and the 6th terminals subgroup.
2. lamination copper bar according to claim 1, which is characterized in that the first terminals subgroup includes and the bus
The first positive input terminal and export the first U phase output terminals that copper bar is conductively connected with the U phase that positive copper bar is conductively connected；
The second terminals subgroup include the second positive input terminal being conductively connected with the positive copper bar of the bus and with the V
Mutually the first V phase output terminals that output copper bar is conductively connected；
The third terminals subgroup include the third positive input terminal being conductively connected with the positive copper bar of the bus and with the W
Mutually the first W phase output terminals that output copper bar is conductively connected；
The 4th terminals subgroup include the first negative input terminal being conductively connected with the negative copper bar of the bus and with the U
Mutually the 2nd U phase output terminals that output copper bar is conductively connected；
The 5th terminals subgroup include the second negative input terminal being conductively connected with the negative copper bar of the bus and with the V
Mutually the 2nd V phase output terminals that output copper bar is conductively connected；
The 6th terminals subgroup include the third negative input terminal being conductively connected with the negative copper bar of the bus and with the W
Mutually the 2nd W phase output terminals that output copper bar is conductively connected.
3. lamination copper bar according to claim 1, which is characterized in that one of long edge position of the lamination copper bar has
First capacitor terminal plate and the second capacitor terminal plate, and the first capacitor terminal plate and the second capacitor terminal plate are folded towards described
Layer busbar it is not ipsilateral；The first capacitor terminal plate is connected perpendicularly to the long side of the positive copper bar of the bus, second capacitor
Terminal plate is connected perpendicularly to the long side of the negative copper bar of the bus；The first capacitor terminal plate and the second capacitor terminal plate have respectively
Have multiple for connecting the capacitor connecting terminal of capacitor pin.
4. lamination copper bar according to claim 1, which is characterized in that have at the first short side of the lamination copper bar honest
Flow input board and negative direct current input board, and the positive direct-current input board and negative direct current input board are towards the difference of the stack bus bar
Side；The positive direct-current input board is connected perpendicularly to the first short side of the positive copper bar of the bus, the negative direct current input board vertically connects
It is connected to the first short side of the negative copper bar of the bus.
5. lamination copper bar according to claim 1, which is characterized in that the V phase, which exports copper bar and is located at the U phase, exports copper
Row exports between copper bar with W phase, has U phase output board, V phase output board and W phase defeated at the second short side of the lamination copper bar
Ejecting plate, and the U phase output board is connected perpendicularly to that the U phase exports the second short side of copper bar, the W phase output board vertically connects
Export the second short side of copper bar to the W phase, the V phase output board be connected to the V phase export copper bar the second short side and with
The V phase exports copper bar and is in the same plane；The difference of the U phase output board and W phase output board towards the stack bus bar
Side.
6. lamination copper bar according to claim 2, which is characterized in that the positive copper bar of the bus, the negative copper bar of bus, U phase are defeated
Copper bar, V phase export copper bar out, W phase exports copper bar and is arranged successively from the first side to second side of the lamination copper bar, and the V
Mutually the length of the long side of output copper bar is less than the length that the U phase exports the long side of copper bar, and the W phase exports the long side of copper bar
Length is less than the length that the V phase exports the long side of copper bar.
7. lamination copper bar according to claim 6, which is characterized in that first positive input terminal, the second positive input terminal
Son, third positive input terminal are made of the first hollow stud for being welded in the positive copper bar of the bus respectively, and described first hollow
The first end of stud through the lamination copper bar the first side and have for overlapped the spiral shell of the binding post with power unit module
Column plane, second end through the lamination copper bar second side and be fixedly connected with the first nut；
First negative input terminal, the second negative input terminal, third negative input terminal are respectively by being welded in the negative copper of the bus
The second hollow stud of row is constituted, and the first end of second hollow stud is through the first side and second of the lamination copper bar
Nut is fixedly connected, second side and having of second end through the lamination copper bar is taken for the binding post with power unit module
The stud plane connect；
The first U phase output terminals and the 2nd U phase output terminals export the third hollow stud of copper bar by being welded on the U phase
Constitute, the first end of the third hollow stud through first side of lamination copper bar and have for power unit module
Binding post overlapped stud plane, second end through the lamination copper bar second side and there is wiring with power unit module
Column overlapped stud plane；
The first V phase output terminals and the 2nd V phase output terminals export the 4th hollow stud of copper bar by being welded on the V phase
Constitute, the first end of the 4th hollow stud through first side of lamination copper bar and have for power unit module
Binding post overlapped stud plane, second end through the lamination copper bar second side and have for power unit module
Binding post overlapped stud plane；
The first W phase output terminals and the 2nd W phase output terminals export the 5th hollow stud of copper bar by being welded on the W phase
Constitute, the first end of the 5th hollow stud through first side of lamination copper bar and have for power unit module
Binding post overlapped stud plane, second end through the lamination copper bar second side and have for power unit module
Binding post overlapped stud plane.
8. lamination copper bar according to claim 6, which is characterized in that first hollow stud, the second hollow stud,
Have between three hollow studs, the 4th hollow stud, the 5th hollow stud and the copper bar of non-solder and keeps away safety felt pad.
9. a kind of Three-phase high-power inverter, including cabinet body and six half bridge arm high power switch modules of single tube, feature exist
In, the Three-phase high-power inverter further include and the lamination copper such as lamination copper bar of any of claims 1-8
Come vertical installation in the cabinet body；Wherein, three half bridge arm high power switch modules of single tube are installed on the lamination copper bar
First side, and be conductively connected respectively with the first terminals subgroup, the second terminals subgroup and third terminals subgroup；Separately
Outer three single tubes, half bridge arm high power switch module is installed on second side of the lamination copper bar, and respectively with the 4th wiring
Terminal group, the 5th terminals subgroup and the 6th terminals subgroup are conductively connected.
10. Three-phase high-power inverter according to claim 9, which is characterized in that the lamination copper bar is perpendicular to institute
The mode for stating the door-plate of cabinet body is installed in the cabinet body, has blower, the first air duct and the second air duct in the cabinet body, often
The one half bridge arm high power switch module of single tube includes shell, and has the first opening and the second opening on the shell；Its
In:
The blower is located at the lower section of the lamination copper bar, and second air duct is disposed adjacent with the backboard of the cabinet body, is described
First air duct is disposed adjacent with second air duct；
The air inlet in first air duct is located at the air outlet of the blower, and first air duct includes multiple air outlets, and institute
State the first opening of each air outlet in the first air duct and the shell of a half bridge arm high power switch module of single tube
Connection；
The air outlet in second air duct is located at the back or top of the cabinet body, and second air duct includes multiple air inlets,
And the second of each air inlet in second air duct and the shell of a half bridge arm high power switch module of single tube
Open communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397283.2A CN109412431A (en) | 2018-11-22 | 2018-11-22 | Lamination copper bar and Three-phase high-power inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397283.2A CN109412431A (en) | 2018-11-22 | 2018-11-22 | Lamination copper bar and Three-phase high-power inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109412431A true CN109412431A (en) | 2019-03-01 |
Family
ID=65474606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811397283.2A Pending CN109412431A (en) | 2018-11-22 | 2018-11-22 | Lamination copper bar and Three-phase high-power inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109412431A (en) |
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| CN110838656A (en) * | 2019-11-29 | 2020-02-25 | 广东美的暖通设备有限公司 | Busbar, frequency converter and centrifugal machine |
| CN112865557A (en) * | 2021-03-12 | 2021-05-28 | 华北电力大学（保定） | MOSFET high-frequency full-bridge inversion unit |
| CN113271021A (en) * | 2021-05-20 | 2021-08-17 | 中国第一汽车股份有限公司 | Motor controller power module and electric vehicle |
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| CN116614005A (en) * | 2023-05-17 | 2023-08-18 | 深圳迈格瑞能技术有限公司 | Layout structure of full-bridge circuit |
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