CN106208639A - Input adaptive Switching power - Google Patents
Input adaptive Switching power Download PDFInfo
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- CN106208639A CN106208639A CN201510229441.3A CN201510229441A CN106208639A CN 106208639 A CN106208639 A CN 106208639A CN 201510229441 A CN201510229441 A CN 201510229441A CN 106208639 A CN106208639 A CN 106208639A
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
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Abstract
The invention discloses a kind of input adaptive Switching power, this input adaptive Switching power includes input interface, control circuit, switching circuit and DC/DC changer, and described switching circuit includes pfc converter；Described control circuit is sampled for the voltage signal accessing described input interface, and controls signal to described switching circuit accordingly according to the output of described voltage signal；Described input interface is used for incoming transport or high-voltage dc voltage signal；Described switching circuit is directly output to DC/DC changer for the voltage signal gating the access of described input interface according to described control signal and carries out voltage transformation, or first output to described pfc converter carries out voltage transformation, then export to DC/DC changer and carry out voltage transformation.The input adaptive Switching power of the present invention can reduce the loss of power, improves power-efficient, it is achieved power supply optimum efficiency under difference input standard.
Description
Technical field
The present invention relates to power technique fields, particularly relate to a kind of input adaptive Switching power.
Background technology
The alternating current power supply compatibility HVDC input of single-input interface, can not only be applied to Alternating Current Power Supply
In calculator room equipment, it is also possible to apply in HVDC input calculator room equipment, expanded answering of alternating current power supply
Use scope.
For the demand, can be respectively directed to exchange (i.e. AC) and HVDC (i.e. DC) input,
Designing two kinds of conversion scheme at power source internal, AC input is lower uses isolation AC/DC conversion, under DC input
Use isolation DC/DC conversion to realize, thus realize the optimum efficiency under different input standard, but this side
The area of the power supply that case realizes is big, cost is high, the most infeasible in engineering.Scheme conventional in engineering
It is the PFC+DC/DC Two Stages scheme selecting compatible two kinds of input standards, at exchange or high straightening
Under stream input, all through PFC (Power Factor Correction, Active PFC) and DC/DC
Export after two stage power conversion.And HVDC is inputted, it is achieved the scheme of optimum efficiency is directly to adopt
Exporting after converting by one-level DC/DC, the most above-mentioned compatible scheme converts branch road because introducing PFC, causes
Loss increase, efficiency under HVDC input reduce.
Therefore, alternating current power supply compatibility HVDC input, although expanded the range of application of power supply, but
Ensureing that area and cost change little situation, existing scheme is difficult to the optimum under different input standard
Efficiency.
Summary of the invention
Present invention is primarily targeted at a kind of input adaptive Switching power of offer, it is intended to reduce power supply and damage
Consumption, puies forward efficient power rate, it is achieved power supply optimum efficiency under difference input standard.
In order to achieve the above object, the present invention provides a kind of described input adaptive Switching power, described defeated
Enter self adaptation Switching power and include input interface, control circuit, switching circuit and DC/DC changer；Institute
State switching circuit and include that pfc converter, described switching circuit are connected to described input interface and described
Between DC/DC changer, the input of described control circuit is connected with described input interface, described control
The outfan of circuit is connected with the control end of described switching circuit；
Described input interface is used for incoming transport or high-voltage dc voltage signal；
Described control circuit is sampled for the voltage signal accessing described input interface, and according to institute
State voltage signal output and control signal to described switching circuit accordingly；
Described switching circuit is for gating, according to described control signal, the voltage signal that described input interface accesses
It is directly output to DC/DC changer and carries out voltage transformation, or first output to described pfc converter is carried out
Voltage transformation, then export to DC/DC changer and carry out voltage transformation.
Preferably, described input adaptive Switching power also includes the electricity for accessing described input interface
The filter circuit that pressure signal is filtered, the input of described filter circuit is connected with described input interface,
The outfan of described filter circuit respectively with the input of described control circuit and the input of described switching circuit
End connects.
Preferably, described switching circuit also includes the first rectification unit and switch unit；Described switch unit
Including the first path and alternate path；
The input of described first rectification unit is connected with described input interface, the first of described switch unit
Path is connected between the outfan of described first rectification unit and described DC/DC changer, described switching
The alternate path of unit is connected to outfan and the input of described pfc converter of described first rectification unit
Between end, the outfan of described pfc converter is connected with described DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for selecting the first path conducting according to described control signal or selecting alternate path conducting.
Preferably, described switching circuit also includes the first rectification unit and switch unit；Described switch unit
Including the first path and alternate path；
First path of described switch unit is connected to described input interface and described DC/DC changer connects
Between, the alternate path of described switch unit is connected to described input interface and described first rectification unit
Between input；The outfan of described first rectification unit is connected with the input of described pfc converter,
The outfan of described pfc converter is connected with DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for selecting the first path conducting or alternate path conducting according to described control signal.
Preferably, described switching circuit also includes the second rectification unit；
The input of described second rectification unit connects with described input via the first path of described switch unit
Mouth connects, and the outfan of described second rectification unit is connected with described DC/DC changer；Described second whole
Stream unit, and will be through for the voltage signal from the first path output of described switch unit carried out rectification
Voltage signal output after rectification is to described DC/DC changer.
Preferably, described control circuit includes sampling unit and controller；
The input of described sampling unit is connected with described input interface, the outfan of described sampling unit with
The detection input of described controller connects, and the control signal outfan of described controller is single with described switching
The control end of unit connects；
Described sampling unit is sampled for the voltage signal accessing described input interface, and will be adopted
The voltage signal output of sample is to described controller, and described controller is for the magnitude of voltage to described voltage signal
Detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage signal, and defeated
Go out and control signal to described switch unit accordingly.
Preferably, described switching circuit also includes the first rectification unit and switch unit；
The input of described first rectification unit is connected with described input interface, described first rectification unit
Outfan input with the input of described switch unit and described pfc converter respectively is connected；Described
Switch unit control end be connected with the outfan of described control circuit, the outfan of described switch unit and
Described DC/DC changer connects；The outfan controlling end and described control circuit of described pfc converter
Connecting, the outfan of described pfc converter is connected with described DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for gating the voltage signal after described first rectification unit rectification according to described control signal
Output is to described DC/DC changer or cuts off the output of described voltage signal, and described pfc converter is used
In not working according to described control signal or the voltage signal after described first rectification unit rectification being entered
Row voltage transformation.
Preferably, described switching circuit also includes the first rectification unit and switch unit；
The input of described switch unit is connected with described input interface, the outfan of described switch unit with
Described DC/DC changer connects；The input of described first rectification unit is connected with described input interface,
The outfan of described first rectification unit is connected with the input of described pfc converter, and described PFC converts
The outfan of device is connected with DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
The voltage signal output that switch unit accesses for gating described input interface to described DC/DC changer or
Person cuts off the output of described voltage signal, and described pfc converter is not for working according to described control signal
Or the voltage signal after described first rectification unit rectification is carried out voltage transformation.
Preferably, described switching circuit also includes the second rectification unit；
The input of described second rectification unit is connected with the outfan of described switch unit, described second whole
The outfan of stream unit is connected with described DC/DC changer；
Described second rectification unit is used for the voltage signal exported from described switch unit is carried out rectification, and
Voltage signal after rectified is exported to described DC/DC changer.
Preferably, described control circuit includes sampling unit and controller；
The input of described sampling unit is connected with described input interface, the outfan of described sampling unit with
The detection input of described controller connects, and the control signal outfan of described controller is cut with described respectively
The control end controlling end and pfc converter changing unit connects；
Described sampling unit is sampled for the voltage signal accessing described input interface, and will be adopted
The voltage signal output of sample is to described controller, and described controller is for the magnitude of voltage to described voltage signal
Detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage signal, and defeated
Go out to control signal to accordingly described switch unit and described pfc converter.
The input adaptive Switching power that the present invention provides, electricity input interface accessed by control circuit
Pressure signal is sampled, and controls signal to switching electricity accordingly according to the voltage signal output sampled
Road, the voltage signal that the control signal selected input interface that switching circuit exports according to control circuit accesses is straight
Connect output to DC/DC changer and carry out voltage transformation, or first export to pfc converter and carry out voltage change
Change, then export to DC/DC changer and carry out voltage transformation.Thus, at the voltage letter that input interface accesses
Number being ac voltage signal, time i.e. under exchange input standard, control circuit output control signal controls to cut
Change circuit gate voltage signal and carry out two-stage voltage transformation through pfc converter and DC/DC changer；?
The voltage signal that input interface accesses is high-voltage dc voltage signal, time i.e. under HVDC input standard,
Control circuit output control signal controls switching circuit gate voltage signal and only carries out through DC/DC changer
Voltage order one converts, it is not necessary to convert through pfc converter such that it is able to reduce the loss of power, improves electricity
Source efficiency, it is achieved power supply optimum efficiency under difference input standard.
Accompanying drawing explanation
Fig. 1 is the structural representation of input adaptive Switching power preferred embodiment of the present invention；
Fig. 2 is the structural representation of input adaptive Switching power the first specific embodiment of the present invention；
Fig. 3 is the structural representation of input adaptive Switching power the second specific embodiment of the present invention；
Fig. 4 is the structural representation of input adaptive Switching power the 3rd specific embodiment of the present invention；
Fig. 5 is the structural representation of input adaptive Switching power the 4th specific embodiment of the present invention.
The realization of the purpose of the present invention, functional characteristics and advantage, will in conjunction with the embodiments, and makees referring to the drawings
Further illustrate.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides a kind of input adaptive Switching power.
With reference to the structural representation that Fig. 1, Fig. 1 are input adaptive Switching power preferred embodiment of the present invention.
In present pre-ferred embodiments, the input adaptive Switching power of the present invention include input interface 10,
Control circuit 20, switching circuit 30 and DC/DC changer 40；Described switching circuit 30 includes PFC
Changer 31, described switching circuit 30 is connected to described input interface 10 and described DC/DC changer
Between 40, the input of described control circuit 20 is connected with described input interface 10, described control circuit
The outfan of 20 is connected with the control end of described switching circuit 30.
Wherein, described input interface 10 is for incoming transport or high-voltage dc voltage signal；Described control electricity
Sampling for the voltage signal accessing described input interface 10 in road 20, and believes according to described voltage
Number output controls signal to described switching circuit 30 accordingly；Described switching circuit 30 is for according to described control
The voltage signal that input interface 10 described in signal gating processed accesses is directly output to DC/DC changer 40 and enters
Row voltage transformation, or first output to described pfc converter 31 carries out voltage transformation, then export to
DC/DC changer 40 carries out voltage transformation.
In the present embodiment, input interface 10 may be connected to alternating current power supply or high-voltage DC power supply, to access
The input interface 10 of ac voltage signal or high-voltage dc voltage signal, i.e. input adaptive Switching power can
With compatible with alternating input standard and HVDC input standard.
When input interface 10 accesses voltage signal, the voltage that input interface 10 is accessed by control circuit 20
Signal is sampled, and controls signal to switching circuit accordingly according to the voltage signal output sampled
30, to control switching circuit 30 according to this control signal switching gating branch road, i.e. selected input interface 10
The voltage signal accessed is directly output to DC/DC changer 40 and carries out voltage transformation, or, gate defeated
The voltage signal that incoming interface 10 accesses first exports and carries out voltage transformation to pfc converter 31, becomes through PFC
Voltage signal after parallel operation 31 conversion exports to DC/DC changer 40 again and carries out voltage transformation.
Thus, the voltage signal accessed at input interface 10 is ac voltage signal, i.e. in exchange input system
Time under formula, control circuit 20 exports control signal and controls switching circuit 30 gate voltage signal through PFC
Changer 31 and DC/DC changer 40 carries out two-stage voltage transformation；At the electricity that input interface 10 accesses
Pressure signal is high-voltage dc voltage signal, and time i.e. under HVDC input standard, control circuit 20 exports
Control signal controls switching circuit 30 gate voltage signal and only carries out one-level electricity through DC/DC changer 40
Buckling is changed, it is not necessary to convert through pfc converter 31 such that it is able to reduce the loss of power, improves power supply effect
Rate, it is achieved power supply optimum efficiency under difference input standard.
Specifically, as it is shown in figure 1, described input adaptive Switching power also includes filter circuit 50, should
Filter circuit 50 is filtered for the voltage signal accessing described input interface 10, described filtered electrical
The input on road 50 is connected with described input interface 10, the outfan of described filter circuit 50 respectively with institute
The input of the input and described switching circuit 30 of stating control circuit 20 connects.
When input interface 10 accesses voltage signal, the voltage signal accessed first is entered by filter circuit 50
Row filtering, filtering interfering, so that the voltage signal that control circuit 20 samples, and through switching
Circuit 30 exports to the voltage signal of DC/DC changer 40 or pfc converter 31 stable.
In conjunction with seeing figures.1.and.2, wherein Fig. 2 is that input adaptive Switching power first of the present invention is concrete real
Execute the structural representation of example.
Based on Fig. 1, as in figure 2 it is shown, described switching circuit 30 also includes the first rectification unit 32 and switching
Unit 33；Described switch unit 33 includes the first path and alternate path.
The input of described first rectification unit 32 is connected with described input interface 10, described switch unit
First path of 33 is connected to the outfan of described first rectification unit 32 and described DC/DC changer 40
Between, the alternate path of described switch unit 33 be connected to described first rectification unit 32 outfan and
Between the input of described pfc converter 31, the outfan of described pfc converter 31 and described DC/DC
Changer 40 connects.
Described first rectification unit 32 carries out rectification for the voltage signal accessing described input interface 10,
Described switch unit 33 is for selecting the first path conducting according to described control signal or selecting alternate path
Conducting.
It addition, in Fig. 2, described control circuit 20 includes sampling unit 21 and controller 22；Described adopt
The input of sample unit 21 is connected with described input interface 10, the outfan of described sampling unit 21 and institute
The detection input stating controller 22 connects, and the control signal outfan of described controller 22 is cut with described
The control end changing unit 33 connects.
Described sampling unit 21 is sampled for the voltage signal accessing described input interface 10, and
It is used for described voltage is believed to described controller 22, described controller 22 by the voltage signal output sampled
Number magnitude of voltage detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage
Signal, and export control signal to described switch unit 33 accordingly.
In input adaptive Switching power shown in Fig. 2, switch unit 33 can be one or two switch
First path of device, such as switch unit 33 can be audion, metal-oxide-semiconductor or relay, switching
The alternate path of unit 33 can also be audion, metal-oxide-semiconductor or relay, the first of switch unit 33
Path and alternate path can also use a double-point double-throw switch to realize, as long as meeting switch unit simultaneously
First path of 33 and alternate path can be according to the control signal switched conductive of controller 22 output.
As in figure 2 it is shown, when input interface 10 accesses voltage signal, sampling unit 21 is to voltage signal
Sampling, and export the voltage signal sampled to controller 22, controller 22 is to voltage signal
Detect, obtain the magnitude of voltage that voltage signal is corresponding.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage, zero-sum negative voltage,
Judge that this voltage signal is ac voltage signal, thus controller 22 exports control signal (such as high level
Control signal) control switch unit 33 gate alternate path conducting, i.e. gate the first rectification unit 32, PFC
Changer 31 and DC/DC changer 40 branch road turns on.Now, ac voltage signal is through the first rectification
Unit 32 is converted to the d. c. voltage signal of correspondence after carrying out rectification, this d. c. voltage signal is single through switching
The alternate path of unit 33 first exports to pfc converter 31 and carries out voltage transformation, through pfc converter 31
Export again after conversion to DC/DC changer 40 and carry out voltage transformation, thus, ac voltage signal is changed
For carrying out two-stage voltage transformation through pfc converter 31 and DC/DC changer 40 after d. c. voltage signal.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding only comprises constant positive voltage or constant
During negative voltage, it is judged that this voltage signal is high-voltage dc voltage signal, thus controller 22 exports phase place
Contrary control signal (such as low level control signal) controls switch unit 33 and gates the first path conducting,
I.e. gate the first rectification unit 32 and DC/DC changer 40 branch road conducting.Now, if high voltage direct current
Pressure signal is negative voltage, then this negative voltage through the first rectification unit 32 carry out rectification be converted to corresponding just
After voltage, the first path output through switch unit 33 carries out voltage transformation to DC/DC changer 40；
If high-voltage dc voltage signal is positive voltage, then the first rectification unit 32 does not make rectification process, HVDC
Voltage signal is directly over the first rectification unit 32, the first path of switch unit 33 exports to DC/DC
Changer 40 carries out voltage transformation.
Certainly, in a variant embodiment, in the input adaptive Switching power shown in Fig. 2, sampling is single
The input of unit 21 can be connected with the outfan of the first rectification unit 32, i.e. input interface 10 accesses
Voltage signal first passes through the first rectification unit 32 and carries out rectification, and sampling unit 21 is again to the first rectification unit
The voltage signal after over commutation of 32 outputs is sampled, and the voltage after over commutation that will sample
Signal exports to controller 22, and the voltage signal that sampling unit 21 is exported by controller 22 detects,
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage and when zero, it is judged that this voltage
Signal is ac voltage signal；Correspondingly, detect, when controller 22, the magnitude of voltage that voltage signal is corresponding
When comprising constant positive voltage, it is judged that this voltage signal is high-voltage dc voltage signal.
In conjunction with reference to Fig. 1 and Fig. 3, wherein Fig. 3 is that input adaptive Switching power second of the present invention is concrete real
Execute the structural representation of example.
Based on Fig. 1, as it is shown on figure 3, described switching circuit 30 also includes the first rectification unit 32 and switching
Unit 33；Described switch unit 33 includes the first path and alternate path.
First path of described switch unit 33 is connected to described input interface 10 and described DC/DC conversion
Between device 40 connects, the alternate path of described switch unit 33 is connected to described input interface 10 and described
Between the input of the first rectification unit 32；The outfan of described first rectification unit 32 and described PFC
The input of changer 31 connects, the outfan of described pfc converter 31 and DC/DC changer 40
Connect.
Described first rectification unit 32 carries out rectification for the voltage signal accessing described input interface 10,
Described switch unit 33 is for selecting the first path conducting or alternate path to lead according to described control signal
Logical.
Specifically, described switching circuit 30 also includes the second rectification unit 34；Described second rectification unit
The input of 34 is connected with described input interface 10 via the first path of described switch unit 33, described
The outfan of the second rectification unit 34 is connected with described DC/DC changer 40；Described second rectification unit
34 for carrying out rectification to the voltage signal from the first path output of described switch unit 33, and will be through whole
Voltage signal output after stream is to described DC/DC changer 40.
Between first path and DC/DC changer 40 of switch unit 33, the second rectification unit is set
34 so that at reverse power connection, the i.e. feelings that high-voltage dc voltage signal is negative voltage of input interface 10 input
Under condition, it is ensured that the high-voltage dc voltage signal of output to DC/DC changer 40 is positive voltage, thus really
Guarantor's electric power polarity is correct.
It addition, in Fig. 3, described control circuit 20 includes sampling unit 21 and controller 22；Described adopt
The input of sample unit 21 is connected with described input interface 10, the outfan of described sampling unit 21 and institute
The detection input stating controller 22 connects, and the control signal outfan of described controller 22 is cut with described
The control end changing unit 33 connects.
Described sampling unit 21 is sampled for the voltage signal accessing described input interface 10, and
It is used for described voltage is believed to described controller 22, described controller 22 by the voltage signal output sampled
Number magnitude of voltage detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage
Signal, and export control signal to described switch unit 33 accordingly.
In like manner, in the input adaptive Switching power shown in Fig. 3, switch unit 33 can be one or two
First path of individual switching device, such as switch unit 33 can be audion, metal-oxide-semiconductor or relay,
The alternate path of switch unit 33 can also be audion, metal-oxide-semiconductor or relay, switch unit 33
First path and alternate path can also use a double-point double-throw switch to realize simultaneously, as long as meeting switching
First path of unit 33 and alternate path can be according to the control signal switched conductive of controller 22 output
?.
As it is shown on figure 3, when input interface 10 accesses voltage signal, sampling unit 21 is to voltage signal
Sampling, and export the voltage signal sampled to controller 22, controller 22 is to voltage signal
Detect, obtain the magnitude of voltage that voltage signal is corresponding.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage, zero-sum negative voltage,
Judge that this voltage signal is ac voltage signal, thus controller 22 exports control signal (such as high level
Control signal) control switch unit 33 gate alternate path conducting, i.e. gate the first rectification unit 32, PFC
Changer 31 and DC/DC changer 40 branch road turns on.Now, ac voltage signal is through switch unit
Alternate path output to first rectification unit 32 of 33 carries out rectification and is converted to the d. c. voltage signal of correspondence,
This d. c. voltage signal first exports and carries out voltage transformation to pfc converter 31, becomes through pfc converter 31
Export again after changing to DC/DC changer 40 and carry out voltage transformation, thus, ac voltage signal is converted to
Two-stage voltage transformation is carried out through pfc converter 31 and DC/DC changer 40 after d. c. voltage signal.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding only comprises constant positive voltage or constant
During negative voltage, it is judged that this voltage signal is high-voltage dc voltage signal, thus controller 22 exports phase place
Contrary control signal (such as low level control signal) controls switch unit 33 and gates the first path conducting,
I.e. gate the second rectification unit 34 and DC/DC changer 40 branch road conducting.Now, if high voltage direct current
Pressure signal is negative voltage, then this negative voltage exports to the second rectification list through the first path of switch unit 33
Unit 34 carries out rectification and is converted to the positive voltage of correspondence, and the output of this positive voltage is carried out to DC/DC changer 40
Voltage transformation；If high-voltage dc voltage signal is positive voltage, then the second rectification unit 34 does not make rectification process,
High-voltage dc voltage signal is directly over the first path of switch unit 33, the second rectification unit 34 exports
Voltage transformation is carried out to DC/DC changer 40.
In conjunction with reference to Fig. 1 and Fig. 4, wherein Fig. 4 is that input adaptive Switching power the 3rd of the present invention is concrete real
Execute the structural representation of example.
Based on Fig. 1, as shown in Figure 4, described switching circuit 30 also includes the first rectification unit 32 and switching
Unit 33.
The input of described first rectification unit 32 is connected with described input interface 10, described first rectification
The outfan of unit 32 defeated with the input of described switch unit 33 and described pfc converter 31 respectively
Enter end to connect；The end that controls of described switch unit 33 is connected with the outfan of described control circuit 20, institute
The outfan stating switch unit 33 is connected with described DC/DC changer 40；Described pfc converter 31
Control end be connected with the outfan of described control circuit 20, the outfan of described pfc converter 31 and
Described DC/DC changer 40 connects.
Described first rectification unit 32 carries out rectification for the voltage signal accessing described input interface 10,
Described switch unit 33 is for gating after described first rectification unit 32 rectification according to described control signal
Voltage signal output to described DC/DC changer 40 or cut off the output of described voltage signal, institute
State pfc converter 31 for not working according to described control signal or to through described first rectification unit
Voltage signal after 32 rectifications carries out voltage transformation.
It addition, in Fig. 4, described control circuit 20 includes sampling unit 21 and controller 22；Described adopt
The input of sample unit 21 is connected with described input interface 10, the outfan of described sampling unit 21 and institute
State controller 22 detection input connect, the control signal outfan of described controller 22 respectively with institute
The control end controlling end and pfc converter 31 stating switch unit 33 connects.
Described sampling unit 21 is sampled for the voltage signal accessing described input interface 10, and
It is used for described voltage is believed to described controller 22, described controller 22 by the voltage signal output sampled
Number magnitude of voltage detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage
Signal, and export control signal to described switch unit 33 and described pfc converter 31 accordingly.
In input adaptive Switching power shown in Fig. 4, switch unit 33 can be a switching device,
Such as switch unit 33 can be audion, metal-oxide-semiconductor or relay, and switch unit 33 can also use
One single-pole double-throw switch (SPDT) realizes, and does not works as long as meeting the pfc converter 31 when switching switch conduction,
When switching switch OFF, pfc converter 31 normally works.
As shown in Figure 4, when input interface 10 accesses voltage signal, sampling unit 21 is to voltage signal
Sampling, and export the voltage signal sampled to controller 22, controller 22 is to voltage signal
Detect, obtain the magnitude of voltage that voltage signal is corresponding.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage, zero-sum negative voltage,
Judge that this voltage signal is ac voltage signal, thus controller 22 exports control signal (such as high level
Control signal) control switch unit 33 and turn off, and control pfc converter 31 and normally work.Now,
Ac voltage signal through the first rectification unit 32 carry out rectification be converted to correspondence d. c. voltage signal after,
First export to pfc converter 31 and carry out voltage transformation, export again after pfc converter 31 converts to
DC/DC changer 40 carries out voltage transformation, thus, after ac voltage signal is converted to d. c. voltage signal
Two-stage voltage transformation is carried out through pfc converter 31 and DC/DC changer 40.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding only comprises constant positive voltage or constant
During negative voltage, it is judged that this voltage signal is high-voltage dc voltage signal, thus controller 22 exports phase place
Contrary control signal (such as low level control signal) controls switch unit 33 and turns on, and controls PFC change
Parallel operation 31 does not works.Now, if high-voltage dc voltage signal is negative voltage, then this negative voltage is through first
After rectification unit 32 carries out the positive voltage that rectification is converted to correspondence, export to DC/DC through switch unit 33
Changer 40 carries out voltage transformation；If high-voltage dc voltage signal is positive voltage, then the first rectification unit 32
Not making rectification to process, it is defeated that high-voltage dc voltage signal is directly over the first rectification unit 32, switch unit 33
Go out to DC/DC changer 40 and carry out voltage transformation.
Certainly, in a variant embodiment, in the input adaptive Switching power shown in Fig. 4, sampling is single
The input of unit 21 can be connected with the outfan of the first rectification unit 32, i.e. input interface 10 accesses
Voltage signal first passes through the first rectification unit 32 and carries out rectification, and sampling unit 21 is again to the first rectification unit
The voltage signal after over commutation of 32 outputs is sampled, and the voltage after over commutation that will sample
Signal exports to controller 22, and the voltage signal that sampling unit 21 is exported by controller 22 detects,
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage and when zero, it is judged that this voltage
Signal is ac voltage signal；Correspondingly, detect, when controller 22, the magnitude of voltage that voltage signal is corresponding
When comprising constant positive voltage, it is judged that this voltage signal is high-voltage dc voltage signal.
In conjunction with reference to Fig. 1 and Fig. 5, wherein Fig. 5 is that input adaptive Switching power the 4th of the present invention is concrete real
Execute the structural representation of example.
Based on Fig. 1, as it is shown in figure 5, described switching circuit 30 also includes the first rectification unit 32 and switching
Unit 33.
The input of described switch unit 33 is connected with described input interface 10, described switch unit 33
Outfan is connected with described DC/DC changer 40；The input of described first rectification unit 32 is with described
Input interface 10 connects, and the outfan of described first rectification unit 32 is defeated with described pfc converter 31
Entering end to connect, the outfan of described pfc converter 31 is connected with DC/DC changer 40.
Described first rectification unit 32 carries out rectification for the voltage signal accessing described input interface 10,
The voltage signal output that described switch unit 33 accesses for gating described input interface 10 is to described
DC/DC changer 40 or cut off the output of described voltage signal, described pfc converter 31 is for root
Do not work according to described control signal or the voltage signal after described first rectification unit 32 rectification is carried out
Voltage transformation.
Specifically, described switching circuit 30 also includes the second rectification unit 34；Described second rectification unit
The input of 34 is connected with the outfan of described switch unit 33, the output of described second rectification unit 34
End is connected with described DC/DC changer 40；Described second rectification unit 34 is for single from described switching
The voltage signal of unit 33 output carries out rectification, and exports the voltage signal after rectified to described DC/DC
Changer 40.
Second rectification unit 34 is set between switch unit 33 and DC/DC changer 40 so that at electricity
Source reversal connection, in the case of i.e. the high-voltage dc voltage signal of input interface 10 input is negative voltage, it is ensured that defeated
The high-voltage dc voltage signal gone out to DC/DC changer 40 is positive voltage, so that it is guaranteed that electric power polarity is just
Really.
In Fig. 5, described control circuit 20 includes sampling unit 21 and controller 22；Described sampling unit
The input of 21 is connected with described input interface 10, the outfan of described sampling unit 21 and described control
The detection input of device 22 connects, the control signal outfan of described controller 22 respectively with described switching
The control end controlling end and pfc converter 31 of unit 33 connects.
Described sampling unit 21 is sampled for the voltage signal accessing described input interface 10, and
It is used for described voltage is believed to described controller 22, described controller 22 by the voltage signal output sampled
Number magnitude of voltage detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage
Signal, and export control signal to described switch unit 33 and described pfc converter 31 accordingly.
In like manner, in the input adaptive Switching power shown in Fig. 5, switch unit 33 can be a switch
Device, such as switch unit 33 can be audion, metal-oxide-semiconductor or relay, and switch unit 33 also may be used
To use single-pole double-throw switch (SPDT) to realize, as long as meeting when switching switch conduction pfc converter 31 not
Work, when switching switch OFF, pfc converter 31 normally works.
As it is shown in figure 5, when input interface 10 accesses voltage signal, sampling unit 21 is to voltage signal
Sampling, and export the voltage signal sampled to controller 22, controller 22 is to voltage signal
Detect, obtain the magnitude of voltage that voltage signal is corresponding.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding comprises positive voltage, zero-sum negative voltage,
Judge that this voltage signal is ac voltage signal, thus controller 22 exports control signal (such as high level
Control signal) control switch unit 33 and turn off, and control pfc converter 31 and normally work.Now,
Ac voltage signal through the first rectification unit 32 carry out rectification be converted to correspondence d. c. voltage signal after,
First export to pfc converter 31 and carry out voltage transformation, export again after pfc converter 31 converts to
DC/DC changer 40 carries out voltage transformation, thus, after ac voltage signal is converted to d. c. voltage signal
Two-stage voltage transformation is carried out through pfc converter 31 and DC/DC changer 40.
When controller 22 detects that the magnitude of voltage that voltage signal is corresponding only comprises constant positive voltage or constant
During negative voltage, it is judged that this voltage signal is high-voltage dc voltage signal, thus controller 22 exports phase place
Contrary control signal (such as low level control signal) controls switch unit 33 and turns on, and controls PFC change
Parallel operation 31 does not works.Now, if high-voltage dc voltage signal is negative voltage, then this negative voltage is through switching
Export after unit 33 to the second rectification unit 34 carry out rectification be converted to correspondence positive voltage, this positive voltage
Output to DC/DC changer 40 carries out voltage transformation；If high-voltage dc voltage signal is positive voltage, then
Second rectification unit 34 is not made rectification and is processed, high-voltage dc voltage signal be directly over switch unit 33, the
Two rectification units 34 export to DC/DC changer 40 and carry out voltage transformation.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,
Every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion, or directly
Or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (10)
1. an input adaptive Switching power, it is characterised in that described input adaptive Switching power bag
Include input interface, control circuit, switching circuit and DC/DC changer；Described switching circuit includes PFC
Changer, described switching circuit is connected between described input interface and described DC/DC changer, described
The input of control circuit is connected with described input interface, the outfan of described control circuit and described switching
The control end of circuit connects；
Described input interface is used for incoming transport or high-voltage dc voltage signal；
Described control circuit is sampled for the voltage signal accessing described input interface, and according to institute
State voltage signal output and control signal to described switching circuit accordingly；
Described switching circuit is for gating, according to described control signal, the voltage signal that described input interface accesses
It is directly output to DC/DC changer and carries out voltage transformation, or first output to described pfc converter is carried out
Voltage transformation, then export to DC/DC changer and carry out voltage transformation.
2. input adaptive Switching power as claimed in claim 1, it is characterised in that described input is certainly
Adapt to the filtered electrical that Switching power also includes being filtered for the voltage signal accessing described input interface
Road, the input of described filter circuit is connected with described input interface, and the outfan of described filter circuit divides
It is not connected with the input of the input of described control circuit and described switching circuit.
3. input adaptive Switching power as claimed in claim 1, it is characterised in that described switching electricity
Road also includes the first rectification unit and switch unit；Described switch unit includes the first path and alternate path；
The input of described first rectification unit is connected with described input interface, the first of described switch unit
Path is connected between the outfan of described first rectification unit and described DC/DC changer, described switching
The alternate path of unit is connected to outfan and the input of described pfc converter of described first rectification unit
Between end, the outfan of described pfc converter is connected with described DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for selecting the first path conducting according to described control signal or selecting alternate path conducting.
4. input adaptive Switching power as claimed in claim 1, it is characterised in that described switching electricity
Road also includes the first rectification unit and switch unit；Described switch unit includes the first path and alternate path；
First path of described switch unit is connected to described input interface and described DC/DC changer connects
Between, the alternate path of described switch unit is connected to described input interface and described first rectification unit
Between input；The outfan of described first rectification unit is connected with the input of described pfc converter,
The outfan of described pfc converter is connected with DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for selecting the first path conducting or alternate path conducting according to described control signal.
5. input adaptive Switching power as claimed in claim 4, it is characterised in that described switching electricity
Road also includes the second rectification unit；
The input of described second rectification unit connects with described input via the first path of described switch unit
Mouth connects, and the outfan of described second rectification unit is connected with described DC/DC changer；Described second whole
Stream unit, and will be through for the voltage signal from the first path output of described switch unit carried out rectification
Voltage signal output after rectification is to described DC/DC changer.
6. the input adaptive Switching power as described in any one in claim 3 to 5, its feature exists
In, described control circuit includes sampling unit and controller；
The input of described sampling unit is connected with described input interface, the outfan of described sampling unit with
The detection input of described controller connects, and the control signal outfan of described controller is single with described switching
The control end of unit connects；
Described sampling unit is sampled for the voltage signal accessing described input interface, and will be adopted
The voltage signal output of sample is to described controller, and described controller is for the magnitude of voltage to described voltage signal
Detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage signal, and defeated
Go out and control signal to described switch unit accordingly.
7. input adaptive Switching power as claimed in claim 1, it is characterised in that described switching electricity
Road also includes the first rectification unit and switch unit；
The input of described first rectification unit is connected with described input interface, described first rectification unit
Outfan input with the input of described switch unit and described pfc converter respectively is connected；Described
Switch unit control end be connected with the outfan of described control circuit, the outfan of described switch unit and
Described DC/DC changer connects；The outfan controlling end and described control circuit of described pfc converter
Connecting, the outfan of described pfc converter is connected with described DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
Switch unit is for gating the voltage signal after described first rectification unit rectification according to described control signal
Output is to described DC/DC changer or cuts off the output of described voltage signal, and described pfc converter is used
In not working according to described control signal or the voltage signal after described first rectification unit rectification being entered
Row voltage transformation.
8. input adaptive Switching power as claimed in claim 1, it is characterised in that described switching electricity
Road also includes the first rectification unit and switch unit；
The input of described switch unit is connected with described input interface, the outfan of described switch unit with
Described DC/DC changer connects；The input of described first rectification unit is connected with described input interface,
The outfan of described first rectification unit is connected with the input of described pfc converter, and described PFC converts
The outfan of device is connected with DC/DC changer；
Described first rectification unit carries out rectification for the voltage signal accessing described input interface, described
The voltage signal output that switch unit accesses for gating described input interface to described DC/DC changer or
Person cuts off the output of described voltage signal, and described pfc converter is not for working according to described control signal
Or the voltage signal after described first rectification unit rectification is carried out voltage transformation.
9. input adaptive Switching power as claimed in claim 8, it is characterised in that described switching electricity
Road also includes the second rectification unit；
The input of described second rectification unit is connected with the outfan of described switch unit, described second whole
The outfan of stream unit is connected with described DC/DC changer；
Described second rectification unit is used for the voltage signal exported from described switch unit is carried out rectification, and
Voltage signal after rectified is exported to described DC/DC changer.
10. the input adaptive Switching power as described in any one in claim 7 to 9, its feature
Being, described control circuit includes sampling unit and controller；
The input of described sampling unit is connected with described input interface, the outfan of described sampling unit with
The detection input of described controller connects, and the control signal outfan of described controller is cut with described respectively
The control end controlling end and pfc converter changing unit connects；
Described sampling unit is sampled for the voltage signal accessing described input interface, and will be adopted
The voltage signal output of sample is to described controller, and described controller is for the magnitude of voltage to described voltage signal
Detect, it is judged that described voltage signal is ac voltage signal or high-voltage dc voltage signal, and defeated
Go out to control signal to accordingly described switch unit and described pfc converter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229441.3A CN106208639A (en) | 2015-05-07 | 2015-05-07 | Input adaptive Switching power |
| PCT/CN2015/085237 WO2016176917A1 (en) | 2015-05-07 | 2015-07-27 | Input self-adaptive switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229441.3A CN106208639A (en) | 2015-05-07 | 2015-05-07 | Input adaptive Switching power |
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| Publication Number | Publication Date |
|---|---|
| CN106208639A true CN106208639A (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510229441.3A Pending CN106208639A (en) | 2015-05-07 | 2015-05-07 | Input adaptive Switching power |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106208639A (en) |
| WO (1) | WO2016176917A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980913A (en) * | 2017-12-27 | 2019-07-05 | 中兴通讯股份有限公司 | Switching Power Supply, voltage output method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672321A (en) | 2018-11-30 | 2019-04-23 | 珠海格力电器股份有限公司 | Power supply conversion method, device, equipment and medium |
| CN112087126A (en) * | 2019-06-12 | 2020-12-15 | 佛山市美的清湖净水设备有限公司 | Power supply device of vehicle-mounted water dispenser, vehicle-mounted water dispenser and vehicle |
| CN111030663A (en) * | 2019-11-12 | 2020-04-17 | 京信通信技术(广州)有限公司 | Adaptive gating circuit, method, apparatus and device |
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| CN101572497A (en) * | 2009-05-21 | 2009-11-04 | 捷普科技（上海）有限公司 | Method for building industrial AC/DC wide range input power module |
| CN201549920U (en) * | 2009-09-10 | 2010-08-11 | 中国人民解放军海军702厂 | Intelligent charger with alternating current and direct current collinear input |
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| CN100559687C (en) * | 2006-04-14 | 2009-11-11 | 台达电子工业股份有限公司 | Power supply unit and ripple attenuation device thereof |
| KR101323788B1 (en) * | 2012-01-02 | 2013-10-31 | 주식회사 디씨파워시스템 | Ac/dc server power apparatus for enhancing efficiency of power supply |
| CN203608419U (en) * | 2013-11-06 | 2014-05-21 | 安徽师范大学 | LED driver |
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- 2015-07-27 WO PCT/CN2015/085237 patent/WO2016176917A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572497A (en) * | 2009-05-21 | 2009-11-04 | 捷普科技（上海）有限公司 | Method for building industrial AC/DC wide range input power module |
| CN201549920U (en) * | 2009-09-10 | 2010-08-11 | 中国人民解放军海军702厂 | Intelligent charger with alternating current and direct current collinear input |
| CN104578383A (en) * | 2013-10-21 | 2015-04-29 | 雅达电子国际有限公司 | Input redundant circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980913A (en) * | 2017-12-27 | 2019-07-05 | 中兴通讯股份有限公司 | Switching Power Supply, voltage output method |
| CN109980913B (en) * | 2017-12-27 | 2021-11-02 | 中兴通讯股份有限公司 | Switching power supply and voltage output method |
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|---|---|
| WO2016176917A1 (en) | 2016-11-10 |
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