CN204886717U - Take absorptive combination water -cooling power device of excessive pressure - Google Patents
Take absorptive combination water -cooling power device of excessive pressure Download PDFInfo
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- CN204886717U CN204886717U CN201520632370.7U CN201520632370U CN204886717U CN 204886717 U CN204886717 U CN 204886717U CN 201520632370 U CN201520632370 U CN 201520632370U CN 204886717 U CN204886717 U CN 204886717U
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Abstract
The utility model relates to an integrated power unit who has a plurality of IGBT devices specifically is take absorptive combination water -cooling power device of excessive pressure, including frame, water -cooling base plate, compound female row, drive plate, IGBT, absorption capacitors and the interchange terminal of half -bridge encapsulation. The utility model discloses a take absorptive combination water -cooling power device of excessive pressure, this power device makes up four -quadrant rectifier circuit and three -phase inverter circuit at an independent unit, can cross the mapping mode that friendship - straight - was handed over with inputing the single phase alternating current electric flux, output is three -phase alternating current, the power device adopts powerful IGBT device as main circuit switch element, utilize compound female arranging to support capacitance connection with outside direct current, set up on the main circuit and be used for IGBT to turn -off the absorption capacitors of overvoltage absorption, adopt the circulating water to dispel the heat to switch element, the high integration of unsteady flow main circuit has been realized, and the reliability of power conversion circuit has been improved.
Description
Technical field
The utility model relates to the power cell being integrated with multiple IGBT device, is specially the combination water-cooled power device that band overvoltage absorbs.
Background technology
Along with the development of electric electronic current change technology, employing high-power IGBT is that the current transformer application of switch element is increasingly extensive, the conveniently maintenance of main circuit, a kind of multiple IGBT device of main circuit are carried out installation integrated, form independently power device, major function comprises the connection of main circuit, the switch control rule of device and heat radiation, and the application of this pattern is conducive to the standardization of power device, is conducive to safeguarding and changing.
Existing power device is structurally independent, and as four-quadrant rectification and three-phase inverting circuit dispersed placement, not combination, or IGBT switching circuit does not arrange overpressure absorbing circuit, and such power device layout is too fat to move, it is large to take up room; IGBT turn-off reversal voltage is high, and power device easily damages, power device poor reliability.Existing power device generally uses forced air cooling radiating mode in addition, during power device employing forced air cooling radiating mode, reach same thermal resistance, the volume and weight of air-cooled radiator is larger, and need to configure cooling fan, add the cost of system and increase noise.
Summary of the invention
The utility model adds the problem of the cost of system in order to solve existing power device and structurally disperse and adopting forced air cooling radiating mode, and big current turns off the integrity problem caused, and provides the combination water-cooled power device that band overvoltage absorbs.
The utility model adopts following technical scheme to realize: the combination water-cooled power device that band overvoltage absorbs, comprise framework, water-cooling base plate, composite bus bar and drive plate, the female column of base of frame welding tool, water-cooling base plate is fastened on the column of base of frame, this column is also supported with ac terminal, the surface being close to water-cooling base plate is provided with the IGBT of seven half-bridge encapsulation, wherein four IGBT form four-quadrant rectification circuit, other three IGBT form inverter circuit, between the DC terminal of the IGBT of each half-bridge encapsulation, an Absorption Capacitance is set, the upper strata of IGBT is provided with composite bus bar, the upper strata of composite bus bar is provided with drive plate, drive plate is connected with the drive end of IGBT by wire harness, the DC terminal of composite bus bar is as the DC terminal of rectification circuit and inverter circuit.
The utility model devises a kind of combination water-cooled power device absorbed with overvoltage, four-quadrant rectification circuit and three-phase inverting circuit combine by this power device, can by the mapping mode of input single-phase alternating current by AC-DC-AC, export as three-phase alternating current, power device adopts powerful IGBT device as main circuit switch element, composite bus bar is utilized to be connected with external dc Support Capacitor, be provided with the Absorption Capacitance turning off overvoltage absorption for IGBT on the main circuit, recirculated water is adopted to dispel the heat to switch element, the height achieving unsteady flow main circuit is integrated, and improve the reliability of power conversion circuit.
The beneficial effect that technical solutions of the utility model are brought is: 1) adopt modularized design, single-phase parallel two-tube rectification circuit and three-phase inverting circuit are integrated, and saves space, is convenient to safeguard change, and reduces maintenance cost; 2) adopt composite bus bar and Absorption Capacitance, improve the reliability of main circuit, reduce the operation loss because fault causes and maintenance cost; 3) adopt water-cooling, improve radiating efficiency, reduce volume and weight.
Accompanying drawing explanation
Fig. 1 is the theory diagram of power device.
Fig. 2 is general structure schematic diagram of the present utility model.
Fig. 3 is the installation site structural representation of Absorption Capacitance.
In figure: 1-framework, 2-water-cooling base plate, 3-composite bus bar, 4-drive plate, 5-ac terminal, 6-Absorption Capacitance, 7-DC terminal, 8-IGBT.
Embodiment
With the combination water-cooled power device that overvoltage absorbs, comprise framework 1, water-cooling base plate 2, composite bus bar 3 and drive plate 4, the female column of framework 1 bottom welding tool, water-cooling base plate 2 is fastened on the column of base of frame, this column is also supported with ac terminal 5, the surface being close to water-cooling base plate is provided with the IGBT8 of seven half-bridge encapsulation, wherein four IGBT form four-quadrant rectification circuit, other three IGBT form inverter circuit, between the DC terminal of the IGBT of each half-bridge encapsulation, an Absorption Capacitance 6 is set, the upper strata of IGBT is provided with composite bus bar 3, the upper strata of composite bus bar 3 is provided with drive plate 4, drive plate 4 is connected with the drive end of IGBT by wire harness, the DC terminal 7 of composite bus bar 3 is as the DC terminal of rectification circuit and inverter circuit, be connected with the DC loop Support Capacitor of outside.
Four-quadrant rectification circuit and three-phase inverting circuit, drive circuit, capacitive absorption circuit are integrated on a power device by the utility model, circuit function and schematic diagram are as shown in Figure 1, wherein: V1 ~ V7 is half-bridge encapsulation IGBT, V1 & V2 is in parallel, the V3 & V4 brachium pontis forming four-quadrant rectification circuit respectively in parallel, V5 ~ V7 is respectively three brachium pontis of three-phase inverting circuit; C1 ~ C7 is Absorption Capacitance, arranges an Absorption Capacitance between the DC terminal of each half-bridge IGBT; DRV1 ~ DRV5 is IGBT drive plate, and DRV1, DRV2 are the drive plate of four-quadrant rectification IGBT, and DRV3 ~ DRV5 is the drive plate of three-phase inversion IGBT; Single-phase alternating current from ac terminal AC1, AC2 input, through V1 ~ V4 composition four-quadrant rectifier circuit rectifies be direct current, then through V5 ~ V7 composition three-phase inverting circuit inversion be that three-phase alternating current exports from ac terminal U, V, W.
After utilizing composite bus bar DC loop to be linked together, be connected with external dc Support Capacitor, the stray inductance of main circuit can be reduced; By arranging Absorption Capacitance, effectively can reduce the switch reverse voltage of main circuit, improving the degree of reliability of whole device; The DC terminal of composite bus bar externally connects employing insulating supporting seat, ensures the reliability externally connected; Single-phase input and three-phase export and utilize copper bar to be connected with device outside; Module adopts water-cooling pattern, can improve radiating efficiency, reduces device volume and weight.
The structure of whole power device relies on under(-)chassis, and framework adopts the Al-Zn coated steel of 3mm, the screwed column of steel plate bottom welding, installs, ac terminal supports, the installation of upper component support column for water-cooling base plate; Handle has been welded in framework one end, and for the transhipment of power device, four blocks of plates that framework stretches out, for the support of upper component, the square opening on it can be used for power device transhipment hand and grasps force.
The heat produced during power device work is taken away by the flow of cooling water in water-cooling base plate, this power device adopts the water-cooling base plate of one-sided water-cooled pattern, 7 half-bridge encapsulation IGBT are installed altogether, water-cooling base plate is connected with framework by fixing hole, conveniently cooling water connects, and power device employs the rapid water interface of STABILE.
Water-cooling base plate plane is when designing, the flatness required and roughness ratio higher (<10um and 1.6), both guarantees close contact, and smear heat-conducting silicone grease between by during assembling, reduce contact heat resistance, reach the object of good heat radiating.
' DC+ ' and ' DC-' of whole rectification and inverter circuit covers by composite bus bar, and spatially carries out lamination, can effectively reduce the distributed inductance of DC loop, reduces voltage peak when IGBT turns off.
Power device comprises 5 pieces of drive plates, and rectification circuit needs 2 pieces, and inverter circuit needs 3 pieces.Drive plate is arranged on the upper strata framework of power device, the built on stilts isolation of insulation padding pole of drive plate corner.Drive plate input power is 15V, and input drive signal is differential PWM signal.Output status signal is high (+15V) low level (0V), has the functions such as fault self-blockade pulse, short-circuit protection, power supply under-voltage protection.
The direct current component of power device is connected with the Support Capacitor of outside by 4 splicing ears ' DC+ ' of composite bus bar, ' DC-', connecting specification is the bolt of M10,4 splicing ears ' DC+ ', ' DC-' downsides are provided with insulating supporting seat, embedded square nut, is conveniently reliably connected with outside.
The AC portion of power device is connected ac terminal be connected with outside copper bar by ' AC1 ', ' AC2 ', ' U ', ' V ', ' W ' 5, connecting specification is the bolt of M10,5 splicing ears are provided with insulation padding pole in inside modules, realize electrical isolation and are connected fastening effect.
Claims (1)
1. be with the combination water-cooled power device that overvoltage absorbs, it is characterized in that comprising framework (1), water-cooling base plate (2), composite bus bar (3) and drive plate (4), the female column of framework (1) bottom welding tool, water-cooling base plate (2) is fastened on the column of base of frame, this column is also supported with ac terminal (5), the surface being close to water-cooling base plate is provided with the IGBT(8 of seven half-bridge encapsulation), wherein four IGBT form four-quadrant rectification circuit, other three IGBT form inverter circuit, between the DC terminal of the IGBT of each half-bridge encapsulation, an Absorption Capacitance (6) is set, the upper strata of IGBT is provided with composite bus bar (3), the upper strata of composite bus bar (3) is provided with drive plate (4), drive plate (4) is connected with the drive end of IGBT by wire harness, the DC terminal (7) of composite bus bar (3) is as the DC terminal of rectification circuit and inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520632370.7U CN204886717U (en) | 2015-08-21 | 2015-08-21 | Take absorptive combination water -cooling power device of excessive pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520632370.7U CN204886717U (en) | 2015-08-21 | 2015-08-21 | Take absorptive combination water -cooling power device of excessive pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886717U true CN204886717U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520632370.7U Active CN204886717U (en) | 2015-08-21 | 2015-08-21 | Take absorptive combination water -cooling power device of excessive pressure |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186889A (en) * | 2015-08-21 | 2015-12-23 | 永济新时速电机电器有限责任公司 | Combination water cooling power apparatus with overvoltage absorption function |
| WO2022128999A1 (en) * | 2020-12-17 | 2022-06-23 | Robert Bosch Gmbh | Inverter |
-
2015
- 2015-08-21 CN CN201520632370.7U patent/CN204886717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186889A (en) * | 2015-08-21 | 2015-12-23 | 永济新时速电机电器有限责任公司 | Combination water cooling power apparatus with overvoltage absorption function |
| WO2022128999A1 (en) * | 2020-12-17 | 2022-06-23 | Robert Bosch Gmbh | Inverter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee after: CRRC YONGJI ELECTRIC CO., LTD. Address before: 044500 Yongji City, Shanxi Province, the city of motor street, No. 18, No. Patentee before: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. |