CN211183807U - Charger power device - Google Patents
Charger power device Download PDFInfo
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- CN211183807U CN211183807U CN201920811752.4U CN201920811752U CN211183807U CN 211183807 U CN211183807 U CN 211183807U CN 201920811752 U CN201920811752 U CN 201920811752U CN 211183807 U CN211183807 U CN 211183807U
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- inverter
- power device
- composite bus
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Abstract
The utility model relates to a charger power device, which comprises a frame, a water-cooling base plate arranged on the frame, and a power unit arranged on the water-cooling base plate; the power unit comprises an inverter circuit, a rectifier circuit, an RC absorption loop, an inverter input composite bus, an alternating current output composite bus and a rectifier composite bus; the inverter input composite busbar is used for connecting the direct current input of the inverter circuit, the alternating current output composite busbar is used for connecting the alternating current output of the inverter circuit, and the rectifying composite busbar is used for connecting the rectifying circuit with the absorbing capacitor of the RC absorbing loop. The utility model discloses with inverter circuit, full wave rectifier circuit and prevent that reverse circuit is integrated at a power device, product structure integrated level is high, has solved the problem that the product is bulky, with high costs, the wiring is complicated.
Description
Technical Field
The utility model belongs to the technical field of the guide rail trolley-bus, a power device is related to, especially a machine power device charges.
Background
With the rapid development of cities, the traffic pressure is increasing day by day, and the urban guide rail electric car has wide application prospect because the urban guide rail electric car can fully utilize the advantages of the existing urban roads, simple infrastructure, short construction period, low cost, no pollution and the like. With the development of electric transmission technology of rail transit, power units adopting high-power IGBTs as switching elements are increasingly widely applied, in the prior art, one power unit only realizes one electric function, and functions of rectification, inversion and the like are realized through a plurality of power units.
However, since the power units are independently installed, the size and the cost are increased, the number of interfaces is large, the wiring complexity is increased, and the installation and maintenance are not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a machine power device charges. Multiple electrical functions are realized on one power unit, and the aims of multi-component integrated assembly, miniaturization and light weight are fulfilled.
The utility model aims at solving through the following technical scheme:
the charger power device comprises a frame, a water-cooling base plate and a power unit, wherein the water-cooling base plate is arranged on the frame; the power unit comprises an inverter circuit, a rectifier circuit, an RC absorption loop, an inverter input composite bus, an alternating current output composite bus and a rectifier composite bus; the inverter input composite busbar is used for connecting the direct current input of the inverter circuit, the alternating current output composite busbar is used for connecting the alternating current output of the inverter circuit, and the rectifying composite busbar is used for connecting the rectifying circuit with the absorbing capacitor of the RC absorbing loop.
Optionally, the rectifier circuit includes a first fast recovery diode D1, a second fast recovery diode D2, a third fast recovery diode D3 and a fourth fast recovery diode D4, wherein D1 is connected in series with D2, D3 is connected in series with D4, and the branch formed by D1 and D2 is connected in parallel with the branch formed by D3 and D4.
Optionally, the RC absorption loop comprises an absorption capacitor and an absorption resistor connected in series.
Optionally, two half-bridge packaged IGBTs serve as two legs of the inverter circuit.
Optionally, the power unit further comprises an anti-reverse circuit and an IGBT driving circuit board; the IGBT driving circuit board is installed on the IGBT, the IGBT driving circuit board and the signal conditioning plate are respectively installed on the left side and the right side of the water-cooling substrate, and a connecting line between the IGBT driving circuit board and the signal conditioning plate penetrates through an opening in the water-cooling substrate to be connected.
Optionally, the power unit further comprises an insulation support seat and a laminated copper bar; the insulation supporting seat is installed above the frame, a movable nut is embedded in the insulation supporting seat, and the terminal of the laminated copper bar is lapped on the insulation supporting seat.
The utility model discloses following beneficial effect has:
the utility model discloses a compound female arranging with inverter circuit, rectifier circuit and prevent that reverse circuit is integrated at a power device, the product structure integrated level is high, has reduced design and product cost.
Further, the utility model discloses set out from quick-witted power device practical application demand that charges, adopt integrated modular structure, use high-power device IGBT, diode, prevent reverse circuit, drive circuit, the compound female row of stromatolite, absorption circuit, water-cooling base plate etc. part function integration together.
Drawings
Fig. 1(a) is a schematic diagram of an inverter circuit according to the present invention;
FIG. 1(b) is a schematic diagram of a full-wave rectifier circuit according to the present invention;
fig. 1(c) is a schematic diagram of an anti-reverse circuit of the present invention;
fig. 2 is a schematic structural diagram of the charger power device of the present invention, wherein (a) is a left side schematic diagram and (b) is a right side schematic diagram;
fig. 3 is a schematic structural view of the frame of the present invention;
fig. 4 is a schematic structural view of the inverter input composite busbar of the present invention, wherein (a) is a perspective view and (b) is a front view;
fig. 5 is a schematic structural view of an ac output composite busbar according to the present invention, wherein (a) is a perspective view and (b) is a front view;
fig. 6 is a schematic structural view of the rectified output composite busbar of the present invention, wherein (a) is a perspective view and (b) is a front view;
fig. 7 is the layout schematic diagram of the water-cooling substrate device of the present invention, wherein (a) is the layout schematic diagram of the water-cooling substrate left device, and (b) is the layout schematic diagram of the water-cooling substrate right device.
Wherein: 1 is a water-cooled substrate; 2 is a left frame; 3 is a right frame; 4 is an insulating support seat; 5 is an IGBT driving circuit board; 6 is an inversion input composite busbar; 7 is an alternating current output composite busbar; 8 is a rectifying composite busbar; 9 is a laminated copper bar; 10 is a signal conditioning board; 11 is an opening; 12 is a bolt fixing component; 13 is an IGBT; 14 is a fast recovery diode, and 15 is an absorption capacitor; 16 is an absorption resistance; and 17 is an anti-reverse diode.
Detailed Description
The utility model discloses a charger power device, which comprises a frame, a water-cooling substrate arranged on the frame, and a power unit arranged on the water-cooling substrate; the power unit comprises an inverter circuit, a rectifier circuit, an RC absorption loop, an inverter input composite bus, an alternating current output composite bus and a rectifier composite bus; the inverter input composite busbar is used for connecting the direct current input of the inverter circuit, the alternating current output composite busbar is used for connecting the alternating current output of the inverter circuit, and the rectifying composite busbar is used for connecting the rectifying circuit with the absorbing capacitor of the RC absorbing loop.
The present invention will be described in further detail with reference to the accompanying drawings:
the circuit schematic diagram of the present embodiment is shown in fig. 1(a), 1(b) and 1 (c):
V1-V2 are 2 IGBTs packaged by a half bridge, and are used as 2 bridge arms of the inverter circuit to form a single-phase inverter circuit.
D1-D4 are fast recovery diode modules, and D1 and D2, and D3 and D4 are respectively connected in series and then connected in parallel to form a full-wave rectification circuit.
R1 and C1 are respectively the resistance and capacitance of the absorption loop, which are used to absorb the over-voltage when the diode is in reverse recovery, and the best matching of the capacitance and resistance can increase the energy absorption capacity to the utmost extent.
D5 is an output circuit anti-reverse diode to prevent the current of the battery from flowing in reverse into the power device.
As also shown in fig. 1(a) to 1(c), the circuit input-output terminal includes:
① and ② are the dc inputs to the inverter circuit.
③ and ④ are the AC outputs of the inverter circuit.
⑤ and ⑥ are the AC inputs to the full wave rectifier circuit.
⑦ and ⑧ are the dc outputs of the full wave rectifier circuit.
⑨ and ⑩ are inputs and outputs of the main circuit output part anti-reverse circuit.
As also shown in fig. 1(a) to 1(c), the control section includes:
DRV1 and DRV2 are IGBT drive circuits, each drive circuit board provides two drive signals to drive two IGBT units of one inverter bridge arm to work, and IGBT switch state signals are fed back to the control unit.
The GPD is a signal conditioning board, when the system requires a signal to be an electric signal, the signal conditioning board receives the electric signal sent by the controller, the electric signal is processed and then transmitted to the IGBT driving circuit board 5, the IGBT driving circuit board 5 controls the on-off of the IGBT, meanwhile, the IGBT driving circuit board 5 feeds the electric signal back to the signal conditioning board, and the electric signal is processed by the signal conditioning board and then returns to the controller; the circuit board need not be used under conditions requiring an optical signal to drive the circuit. The use of the signal conditioning board makes the power unit suitable for the system requirements of both optical signals and electrical signals.
The charger power device of the embodiment is applied to a converter of an urban guide rail electric car, and is integrally shown in fig. 2, and the charger power device comprises a water-cooled substrate 1, a left frame 2, a right frame 3, an insulating support seat 4, an IGBT driving circuit board 5, an inversion input composite busbar 6, an alternating current output composite busbar 7, a rectification composite busbar 8, a laminated copper bar 9, a signal conditioning board 10, a bolt fixing assembly 12, an IGBT device, a fast recovery diode, an anti-reverse diode, an RC absorption loop and the like.
The connecting line between the IGBT driving circuit board 5 and the signal conditioning board 10 passes through the opening 11 on the water-cooling substrate 2 for connection.
The high-voltage high-current IGBT is selected, the IGBT driving circuit board 5 is directly mounted on the IGBT, so that the space can be saved, and the problem that the driving signal is interfered due to long driving connecting wires can be avoided. The IGBT driving circuit board 5 and the signal conditioning board 10 are separately arranged on the left side and the right side of the water-cooling substrate, and the circuit board connecting lines on the left side and the right side penetrate through the open holes on the water-cooling substrate to be connected, so that the existing space of the water-cooling substrate is fully utilized. The IGBT driving circuit board 5 is an optical signal, when the system requires that the driving signal is an electric signal, the signal conditioning board 10 is used for processing the electric signal and transmitting the electric signal to the IGBT driving circuit board 5, meanwhile, the IGBT driving circuit board 5 feeds back the electric signal to the signal conditioning board 10, the electric signal is processed by the signal conditioning board 10 and then returns to the controller, and the IGBT driving circuit board has the functions of preventing upper and lower bridge arm direct connection, DC/DC conversion, power monitoring, fault indication and the like.
This power unit integrated level is high, overall dimension 450mm × 180mm × 310mm (L × W × H), input and output high voltage interface reaches 10, the mode that adopts the top wiring is convenient to operate, improve space utilization.
The whole power unit is quickly connected with the converter cabinet through 3 self-contained screw components; the frame (as shown in fig. 3) is made of stainless steel plate, and on the premise of meeting the mechanical performance, the middle of the frame is hollowed, so that the weight of the device is reduced, and the design purpose of light weight is achieved, and the weight of the device is only 17.8 kg.
The embodiment includes 3 kinds of composite busbars, as shown in fig. 4, 5, and 6, the inverter circuit, the full-wave rectifier circuit, and the RC absorption loop are connected respectively, and the design of the laminated busbar saves space while reducing stray inductance, and improves system reliability and maintainability.
Optionally, as shown in fig. 4, the inverter input composite busbar is formed by covering an insulating film with positive and negative two-layer laminated copper bars, the middle of the insulating film is separated by an insulating material, the inverter input composite busbar includes ① and ② positive and negative input terminals (the serial numbers correspond to ① and ② in fig. 1 (a)), and the upper layer in fig. 4(b) is a negative plate and has 4 negative connection holes, and the lower layer is a positive plate and has 4 positive connection holes.
Optionally, as shown in fig. 5, the inverter output composite busbar provides output connection terminals for the inverter circuit, and ③ and ④ two ac output terminals (the serial numbers correspond to ③ and ④ in fig. 1 (a)) shown in fig. 5.
This patent contravariant input copper bar adopts the stromatolite design, and female the arranging adoption spraying design of contravariant output, with the female branch of arranging of contravariant input of contravariant return circuit and the female separately design of arranging of contravariant output, on the basis that reduces direct current return circuit's distributed inductance and IGBT turn-off voltage peak, effectively practice thrift the space, alleviate female weight of arranging, practice thrift the cost, increase the maintainability of system.
Optionally, the rectifier circuit includes a first fast recovery diode D1, a second fast recovery diode D2, a third fast recovery diode D3 and a fourth fast recovery diode D4, wherein D1 is connected in series with D2, D3 is connected in series with D4, and the branch formed by D1 and D2 is connected in parallel with the branch formed by D3 and D4. The switching frequency of the fast recovery diode reaches 8KHz, and the fast recovery diode has the characteristics of high switching frequency and short reverse recovery time.
Optionally, as shown in fig. 6, the rectifying composite busbar includes 2 ac input terminals ⑤ and ⑥, and two dc output terminals ⑦ and ⑧, which correspond to corresponding serial numbers in fig. 1(b), respectively.
Optionally, the RC absorption loop comprises an absorption capacitor and an absorption resistor connected in series.
The rectifying composite busbar of the embodiment connects the fast recovery diode of the full-wave rectifying circuit, the absorption capacitor of the RC absorption loop and the absorption resistor of the RC absorption loop, so that the distributed inductance of the loop is reduced, and the peak voltage of the diode during reverse recovery is further reduced. In order to meet the requirements of miniaturization design and creepage distance, an insulating partition is pasted between adjacent connecting ends on the surface of the composite busbar.
Optionally, the inverter circuit includes two half-bridge packaged IGBTs, and the two half-bridge packaged IGBTs serve as two bridge arms of the inverter circuit.
Optionally, the power unit further comprises an anti-reverse circuit and an IGBT driving circuit board; the IGBT driving circuit board is installed on the IGBT, the IGBT driving circuit board and the signal conditioning plate are respectively installed on the left side and the right side of the water-cooling substrate, and a connecting line between the IGBT driving circuit board and the signal conditioning plate penetrates through an opening in the water-cooling substrate to be connected.
Optionally, the power unit further comprises an insulation support seat and a laminated copper bar; the insulation supporting seat is installed above the frame, a movable nut is embedded in the insulation supporting seat, and the terminal of the laminated copper bar is lapped on the insulation supporting seat.
As shown in fig. 7, which is a schematic layout diagram of a water-cooled substrate device, the whole power device uses the water-cooled substrate as a base, and two sides of the water-cooled substrate are provided with a power device and a circuit board, an IGBT driving circuit board 5 is directly installed on an IGBT 13, a main circuit is connected through a composite busbar and a copper bar (also called a laminated copper bar), and left and right frames support the power unit. The IGBT 13 and the IGBT driving circuit board 5 thereof are assembled on the left side of the water-cooling substrate 1, and the fast recovery diode 14, the absorption capacitor 15, the absorption resistor 16, the signal conditioning board 10 and the output circuit anti-reflection diode 17 are installed on the right side of the water-cooling substrate 1.
The power unit is suitable for a rectifier circuit with the highest switching frequency of 16k, and a common diode cannot meet the requirement of high switching frequency, so that a fast recovery diode which is quickly switched on and switched off is adopted. And meanwhile, through comparison of multiple tests, 4 absorption resistors are matched with 2 absorption capacitors, so that the absorption capacity of the RC circuit is improved to the maximum extent.
In the embodiment, the inverter circuit, the full-wave rectification circuit and the anti-reverse circuit are integrated in one power unit, so that the product integration level is high, the design purposes of miniaturization and light weight are achieved, and the design and maintenance cost is reduced; the connection of all electrical loops is carried out through the composite bus bar, the internal electrical connection and the external electrical connection are convenient and quick, the adjustable movable nut insulating supporting seat is arranged at the top of the composite bus bar and is lapped on a bus bar high-voltage electrical interface, the interface solves the problems of complex layout, high cost and unreliable quality, the composite bus bar high-voltage electrical interface is suitable for different application conditions of optical signals or electrical signals of a driving circuit, the signal conditioning plate 10 is connected during the electrical signals, the connection is not needed during the optical signals, and the universality of a power unit is; the absorption loop adopts 4 absorption resistors and 2 absorption capacitors, the absorption capacity of the absorption loop is increased to the maximum extent in a limited volume, the application conditions of a power device for quickly cutting off a voltage peak, poor power quality or high secondary output voltage peak of a transformer are met, and the reliable work of a power device fast recovery diode is effectively protected.
Claims (6)
1. The charger power device is characterized by comprising a frame, a water-cooling base plate and a power unit, wherein the water-cooling base plate is installed on the frame; the power unit comprises an inverter circuit, a rectifier circuit, an RC absorption loop, an inverter input composite bus, an alternating current output composite bus and a rectifier composite bus; the rectification circuit comprises an RC absorption loop, an inverter input composite bus, an AC output composite bus and a rectification composite bus, wherein the inverter input composite bus is used for connecting the DC input of the inverter circuit, the AC output composite bus is used for connecting the AC output of the inverter circuit, and the rectification composite bus is used for connecting the rectification circuit with the absorption capacitor of the RC absorption loop;
the power unit also comprises an anti-reverse circuit and an IGBT driving circuit board; the IGBT driving circuit board is installed on the IGBT, the IGBT driving circuit board and the signal conditioning plate are respectively installed on the left side and the right side of the water-cooling substrate, and a connecting line between the IGBT driving circuit board and the signal conditioning plate penetrates through an opening in the water-cooling substrate to be connected; the power unit is connected with the converter cabinet through 3 self-contained screw assemblies.
2. The charger power device according to claim 1, wherein the inverter input composite busbar is covered with an insulating film by positive and negative two laminated copper bars, and the two laminated copper bars are separated by an insulating material.
3. The charger power device according to claim 1, wherein said rectifying circuit comprises a first fast recovery diode D1, a second fast recovery diode D2, a third fast recovery diode D3 and a fourth fast recovery diode D4, wherein D1 is connected in series with D2, D3 is connected in series with D4, and the branch of D1 and D2 is connected in parallel with the branch of D3 and D4.
4. The charger power device according to claim 1, wherein the RC absorption loop comprises an absorption capacitor and an absorption resistor connected in series.
5. The charger power device according to claim 1, characterized in that two half-bridge packaged IGBTs serve as two legs of the inverter circuit.
6. The charger power device according to claim 1, wherein the power unit further comprises an insulating support base, a laminated copper bar; the insulation supporting seat is arranged above the frame, a movable nut is embedded in the insulation supporting seat, and the terminal of the laminated copper bar is lapped on the insulation supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811752.4U CN211183807U (en) | 2019-05-31 | 2019-05-31 | Charger power device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811752.4U CN211183807U (en) | 2019-05-31 | 2019-05-31 | Charger power device |
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| CN211183807U true CN211183807U (en) | 2020-08-04 |
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| CN201920811752.4U Active CN211183807U (en) | 2019-05-31 | 2019-05-31 | Charger power device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365086A (en) * | 2019-05-31 | 2019-10-22 | 西安中车永电电气有限公司 | A kind of highly integrated charger power cell |
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2019
- 2019-05-31 CN CN201920811752.4U patent/CN211183807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365086A (en) * | 2019-05-31 | 2019-10-22 | 西安中车永电电气有限公司 | A kind of highly integrated charger power cell |
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