CN208723805U - A kind of powersupply system - Google Patents
A kind of powersupply system Download PDFInfo
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- CN208723805U CN208723805U CN201821430056.0U CN201821430056U CN208723805U CN 208723805 U CN208723805 U CN 208723805U CN 201821430056 U CN201821430056 U CN 201821430056U CN 208723805 U CN208723805 U CN 208723805U
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Abstract
The utility model provides a kind of powersupply system, comprising: for exporting the main power circuit of main power DC electricity；The boost voltage stable for output amplitude, input terminal connect the main power circuit output end, detect the output parameter of the main power circuit and adjust the auxiliary power circuit of the boost voltage amplitude according to the output parameter；Power end connects the output end of the auxiliary power circuit, and output end connects and controls the control unit of the main power circuit.Boost voltage is supplied into control unit, to realize that boost voltage is reduced with the reduction of main power circuit output power, change the power consumption of auxiliary power circuit with the output power of main power circuit, further improves the overall conversion efficiency of entire powersupply system.
Description
Technical field
The utility model relates to field of electronic devices, more particularly to a kind of powersupply system.
Background technique
In general, in powersupply system, in order to be accurately controlled electromotive power output or other miscellaneous functions, power supply
It include some control circuits in system.The premise that these control circuits can work normally is need to supply its amplitude stability straight
Galvanic electricity pressure, this DC voltage are commonly referred to as boost voltage.
Therefore, general powersupply system, other than realizing output end and exporting main power, it is also necessary in internal output one
A boost voltage, the circuit for generating the boost voltage is auxiliary power circuit.In current power supply system, regardless of power supply
The main power output of system is that fully loaded output or underloading output, boost voltage are all fixed and invariable.Lead to power supply electricity in this way
Source system either in underloading or fully loaded, the loss of auxiliary power circuit be all it is constant, cause the entirety turn of power supply
Change low efficiency.
The overall conversion efficiency for how improving powersupply system is that those skilled in the art need the technology solved to ask
Topic.
Utility model content
The purpose of the utility model is to provide a kind of powersupply systems, for improving the overall conversion of powersupply system
Efficiency.
In order to solve the above technical problems, the utility model provides a kind of powersupply system, comprising:
For exporting the main power circuit of main power DC electricity；
The boost voltage stable for output amplitude, input terminal connect the main power circuit output end, detect the master
The output parameter of power circuit and the auxiliary power circuit that the boost voltage amplitude is adjusted according to the output parameter；
Power end connects the output end of the auxiliary power circuit, and output end connects and controls the control of the main power circuit
Unit processed.
Optionally, the powersupply system further include: power end connects the heat dissipation of the auxiliary power circuit output end
Unit.
Optionally, the output parameter includes: the one or more of output electric current, output voltage and output power.
Optionally, the auxiliary power circuit specifically includes:
The accessory power supply main circuit of output end output boost voltage；
Input terminal connects the main power circuit output end, detects the output parameter of the main power circuit, is detected
The detection circuit of parameter；
Output end connects the control terminal of the accessory power supply main circuit, and first input end connects the accessory power supply main circuit
Output end detect the boost voltage and controlled by the detected value of the boost voltage compared with a reference value according to comparison result
The accessory power supply main circuit, the stable boost voltage of output amplitude, the second input terminal connects the detection circuit, according to described
Detection parameters adjust the voltage feedback circuit of the boost voltage amplitude.
Optionally, the detection circuit has an output end, and the detection parameters of output end output are output electric current inspection
Survey parameter.
Optionally, the voltage feedback circuit specifically includes: the first integrated transporting discharging, first resistor, second resistance and compensation
Network；Wherein,
The inverting input terminal of first integrated transporting discharging connects described first resistor one end, the other end of the first resistor
As the first input end of the voltage feedback circuit, the output end of the connection accessory power supply main circuit；Described first is integrated
The inverting input terminal of amplifier is also connected with described second resistance one end, and the other end of the second resistance is as the Voltage Feedback electricity
Second input terminal on road, the connection detection circuit；
The normal phase input end of first integrated transporting discharging is for inputting a reference value；
The output end of first integrated transporting discharging connects the auxiliary electricity as the output end of the voltage feedback circuit
The control terminal of source main circuit；
The compensation network is connected between the inverting input terminal and output end of first integrated transporting discharging.
Optionally, there are two output ends for the detection circuit tool, and two output ends are respectively that current detecting parameter is defeated
Outlet and voltage detecting parameter output；
Second input terminal of the voltage feedback circuit further includes two sub- input terminals, and two sub- input terminals are right respectively
Two output ends of the detection circuit should be connected.
Optionally, the voltage feedback circuit specifically includes: the second integrated transporting discharging, 3rd resistor, the 4th resistance, the 5th electricity
Resistance and compensation network；Wherein,
The inverting input terminal of second integrated transporting discharging connects described 3rd resistor one end, the other end of the 3rd resistor
As the first input end of the voltage feedback circuit, the output end of the connection accessory power supply main circuit；Described second is integrated
The inverting input terminal of amplifier is also connected with described 4th resistance one end and the 5th resistance one end, the other end of the 4th resistance and institute
State the other end of the 5th resistance respectively as two sub- input terminals, be correspondingly connected with the detection circuit；
The normal phase input end of second integrated transporting discharging inputs a reference value；
The output end of second integrated transporting discharging connects the auxiliary electricity as the output end of the voltage feedback circuit
The control terminal of source main circuit；
The compensation network is connected between the inverting input terminal and output end of second integrated transporting discharging.
Powersupply system provided by the utility model exports main power DC electricity, control unit by main power circuit
Main power circuit, the stable boost voltage of auxiliary power circuit output amplitude are controlled, and detects the output of the main power circuit
Parameter adjusts the boost voltage amplitude according to the output parameter, boost voltage is supplied control unit, to realize auxiliary
Voltage is reduced with the reduction of main power circuit output power, keeps the power consumption of auxiliary power circuit defeated with main power circuit
Out power and change, further improve the overall conversion efficiency of entire powersupply system.
Detailed description of the invention
For the clearer technical solution for illustrating the utility model embodiment or the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the first powersupply system provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of second of powersupply system provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of the third powersupply system provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the 4th kind of powersupply system provided by the embodiment of the utility model；
Specific embodiment
The core of the utility model is to provide a kind of powersupply system, for improving the overall conversion of powersupply system
Efficiency.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is the structural schematic diagram of the first powersupply system provided by the embodiment of the utility model.As shown in Figure 1,
Powersupply system includes:
For exporting the main power circuit 1 of main power DC electricity；
The boost voltage stable for output amplitude, input terminal connect 1 output end of main power circuit, detect the master
The output parameter of power circuit 1 and the auxiliary power circuit 2 that the boost voltage amplitude is adjusted according to the output parameter；
Power end connects the output end of the auxiliary power circuit 2, and output end connects and controls the main power circuit 1
Control unit 3.
Wherein, the input voltage of main power circuit 1 is Vin, can be alternating current, be also possible to direct current.Main power electricity
Input power is converted to direct current, usual AC-DC topology or DC-DC topological realization, output voltage Vo, output electricity by road 1
Stream is Io.Main power circuit 1 is in power supply system for handling the circuit of main power, and the main circuit of the main power of output.
Remaining circuit, if auxiliary power circuit 2 is for exporting boost voltage supply control unit 3, control unit 3 controls main function
Rate circuit makes its output parameter setting value.
Main power circuit 1 handles the embodiment of main power and how control unit 3 controls main power circuit 1 and make it
The parameter of setting is exported, the prior art can be referred to, details are not described herein.
On the other hand auxiliary power circuit 2 also detects main power electricity on the one hand for exporting the boost voltage of stable amplitude
The output parameter on road 1 adjusts the auxiliary power circuit of the boost voltage amplitude according to the output parameter.That is, auxiliary
The boost voltage amplitude for helping power circuit 2 to export not is invariable, but is become according to the output parameter of main power circuit 1
Change.This makes it possible to realize that boost voltage reduces with the reduction of main power circuit output power, make auxiliary power circuit
Power consumption change with the output power of main power circuit, further mention the overall conversion efficiency of entire powersupply system
It is high.
Specifically, auxiliary power circuit 2 detects that the output parameter of main power circuit reduces, the auxiliary of itself output is adjusted
Voltage also reduces.And the output end connection of auxiliary power circuit 2 is control unit 3 etc., and boost voltage is needed to provide electricity for it
Source could work normally, the load of these circuits or unit as auxiliary power circuit 2, and loss would generally sum up in the point that auxiliary electricity
In the loss in source.It is that at light load, the application auxiliary power circuit 2 has decreased its output in the output of main power circuit 1
Boost voltage, at this point, the output power of auxiliary power circuit 2 can also reduce, namely reduce the loss of accessory power supply, further
Improve the overall conversion efficiency of powersupply system.
Optionally, the powersupply system of the application is as shown in Figure 1, further includes: power end connects the accessory power supply electricity
The heat-sink unit 4 of road output end.
Heat-sink unit 4 with power supply refers to, for radiating for powersupply system, and needs boost voltage that could start
The component or its peripheral circuit of heat dissipation work, such as fan.
Optionally, the output parameter of the main power circuit of the application includes: output electric current, output voltage and output power
It is one or more.
Powersupply system provided by the embodiment of the utility model exports main power DC electricity, control by main power circuit
Unit controls main power circuit, the stable boost voltage of auxiliary power circuit output amplitude, and detects the main power circuit
Output parameter adjusts the boost voltage amplitude according to the output parameter, boost voltage is supplied control unit, to realize
Boost voltage is reduced with the reduction of main power circuit output power, makes the power consumption of auxiliary power circuit with main power circuit
Output power and change, further improve the overall conversion efficiency of entire powersupply system.
Fig. 2 is the structural schematic diagram of second of powersupply system provided by the embodiment of the utility model.As shown in Fig. 2,
On the basis of the above embodiments, in another embodiment, auxiliary power circuit 2 can specifically include:
The accessory power supply main circuit 21 of output end output boost voltage；
Input terminal connects 1 output end of main power circuit, detects the output parameter of the main power circuit 1, is examined
Survey the detection circuit 22 of parameter；
Output end connects the control terminal of the accessory power supply main circuit 21, and first input end connects the main electricity of accessory power supply
The output end on road 21 detects the boost voltage, by the detected value of the boost voltage compared with a reference value, according to comparison result
The accessory power supply main circuit 21, the stable boost voltage of output amplitude are controlled, the second input terminal connects the detection circuit 22,
The voltage feedback circuit 23 of the boost voltage amplitude is adjusted according to the detection parameters.
Referring to Fig. 2, accessory power supply main circuit 21 is used to input voltage Vdc being converted to boost voltage Vcc.The auxiliary electricity
Pressure Vcc is DC voltage, and accessory power supply main circuit 21 is controlled by voltage feedback circuit 23.The voltage feedback circuit 23 first input
End for receiving boost voltage detected value Vcc-1, by detected value Vcc-1 in voltage feedback circuit 23 with it inside benchmark
Value compares, and controls accessory power supply main circuit 21 according to comparison result, the boost voltage Vcc setting value for exporting it.Meanwhile separately
On the one hand, the second input terminal of voltage feedback circuit 23 is also used to the detection parameters Vs of receiving test circuit output, detection ginseng
Number Vs characterizes the output power size of main power circuit, adjusts the auxiliary of the output of voltage feedback circuit 23 according to detection parameters Vs
Help the amplitude size of voltage.
Need to illustrate when boost voltage Vcc setting value there is the detected value Vcc-1 and a reference value to codetermine.Also
It is to say, it, can be by changing detected value or benchmark in voltage feedback circuit 23 when needing to change the value of boost voltage Vcc
Value, such as the value of boost voltage Vcc are increased with the raising of a reference value, are increased with the reduction of detected value.
In the present embodiment, auxiliary power circuit 2 generates boost voltage Vcc by specific accessory power supply main circuit 21,
And the boost voltage main circuit 21 is controlled by voltage feedback circuit 23, the boost voltage Vcc for exporting it stablizes in setting value,
The detection parameters Vs exported simultaneously by detection circuit 22, makes voltage feedback circuit 23 according to detection parameters Vs, passes through control
Accessory power supply main circuit 21, the amplitude size for adjusting boost voltage Vcc, become it with the variation of main power output size
Change, improves the overall conversion efficiency of powersupply system.
Optionally, the detection circuit of the application can have an output end, and the detection parameters of output end output are defeated
Current detecting parameter out.Namely the detection circuit detection be main power circuit output electric current.
Fig. 3 is the structural schematic diagram of the third powersupply system provided by the embodiment of the utility model.As shown in figure 3,
On the basis of the above embodiments, in another embodiment, voltage feedback circuit 23 can specifically include: the first integrated transporting discharging
U1, first resistor R1, second resistance R2 and compensation network；Wherein,
The inverting input terminal of the first integrated transporting discharging U1 connects the one end the first resistor R1, the first resistor R1's
The other end is as the first input end of the voltage feedback circuit 23, the output end of the connection accessory power supply main circuit 21；Institute
The inverting input terminal for stating the first integrated transporting discharging U1 is also connected with the one end the second resistance R2, and the other end of the second resistance R2 is made
For the second input terminal of the voltage feedback circuit 23, the connection detection circuit 22 (detection circuit is originally not shown in the figure, only shows
The output parameter V1 of detection circuit out)；
The normal phase input end of the first integrated transporting discharging U1 inputs a reference value Vref；
The output end of the first integrated transporting discharging U1 connects described auxiliary as the output end of the voltage feedback circuit 23
Help the control terminal of electric power main circuit 21；
The compensation network is connected between the inverting input terminal and output end of the first integrated transporting discharging U1.
In specific implementation, first input terminal of voltage feedback circuit 23, connects the accessory power supply main circuit 21
Output end, for receiving boost voltage detected value Vcc-1.Second input terminal of voltage feedback circuit 23 connects the detection electricity
Road 22, for receiving detection parameters V1.In the present embodiment, detection parameters V1 can be output electric current measure parameter.First resistor
R1 and second resistance R2 will be input to the anti-of the first integrated transporting discharging U1 after boost voltage detected value Vcc-1 and detection parameters V1 superposition
Phase input terminal is compared with a reference value Vref of normal phase input end, controls accessory power supply according to the difference output signal compared
Main circuit 21, further, the first integrated transporting discharging U1 and compensation network closed loop adjust accessory power supply main circuit 21, export it
Boost voltage Vcc is the DC voltage for stablizing amplitude, and the amplitude also as the output electric current of main power circuit raising and rise
Height is reduced and is reduced.In this way in the powersupply system of the application, when the output power of main power circuit is reduced to underloading
When, the output power of the auxiliary power circuit also declines therewith, improves the overall conversion efficiency of powersupply system.
Optionally, the detection circuit of the application can have two output ends, and two output ends are respectively electric current inspection
Survey parameter output and voltage detecting parameter output；Second input terminal of the voltage feedback circuit further includes two son inputs
End, two sub- input terminals are connected respectively two output ends of the detection circuit.
Fig. 4 is the structural schematic diagram of the 4th kind of powersupply system provided by the embodiment of the utility model.As shown in figure 4,
On the basis of the above embodiments, in another embodiment, voltage feedback circuit 23 can specifically include: the second integrated transporting discharging
U2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and compensation network；Wherein,
The inverting input terminal of the second integrated transporting discharging U2 connects the one end the 3rd resistor R3, the 3rd resistor R3's
The other end is as the first input end of the voltage feedback circuit 23, the output end of the connection accessory power supply main circuit 21；Institute
The inverting input terminal for stating the second integrated transporting discharging U2 is also connected with described 4th one end resistance R4 and the 5th one end resistance R5, and the described 4th
Second input terminal of the other end of the other end of resistance R4 and the 5th resistance R5 respectively as the voltage feedback circuit 23
Two sub- input terminals, be correspondingly connected with the detection circuit 22；
The normal phase input end of the second integrated transporting discharging U2 inputs a reference value Vref；
The output end of the second integrated transporting discharging U2 connects described auxiliary as the output end of the voltage feedback circuit 23
Help the control terminal of electric power main circuit 21；
The compensation network is connected between the inverting input terminal and output end of the second integrated transporting discharging U2.Specific real
Shi Zhong, first input terminal of voltage feedback circuit 23 connect the output end of the accessory power supply main circuit 21, auxiliary for receiving
Help voltage detecting value Vcc-1.Second input terminal of voltage feedback circuit 23 connects the detection circuit 22, for receiving detection
Parameter V2 and V3.When different from Fig. 3 embodiment, in the present embodiment, there are two the second input terminal tools of voltage feedback circuit 23
Sub- input terminal is connected respectively two output ends of detection circuit 22.Two output ends of the detection circuit 22 export respectively
Current detecting parameter V2 and voltage detecting parameter V3.
In the present embodiment, the 4th resistance R4, the 5th resistance R5 are respectively by current detecting parameter V2 and voltage detecting parameter V3
Superposition, superimposed signal can characterize the output power of main power circuit, while be input to the reverse phase of the second integrated transporting discharging U2
There are also boost voltage detected value Vcc-1, the superposition value of these three signals and a reference value Vref of normal phase input end to carry out for input terminal
Compare, accessory power supply main circuit 21, further, the second integrated transporting discharging U2 and compensation are controlled according to the difference output signal compared
Network closed loop adjusts accessory power supply main circuit 21, and the boost voltage Vcc for exporting it stablizes the DC voltage of amplitude, and the width
Value also as the output power of main power circuit raising and increase, reduce and reduce.In this way in the power supply system of the application
In system, when the output power of main power circuit is reduced at light load, the output power of the auxiliary power circuit also declines therewith,
Improve the overall conversion efficiency of powersupply system.
In above-described embodiment, detection circuit is used to detect the output parameter of main power circuit, obtains the process of detection parameters,
Namely the mode for exporting electric current or output voltage of detection main power circuit, the prior art can be referred to, details are not described herein.
A kind of powersupply system provided by the utility model is described in detail above.Each reality in specification
It applies example to be described in a progressive manner, each embodiment focuses on the differences from other embodiments, Ge Geshi
Applying same and similar part between example may refer to each other.
It should be pointed out that for those skilled in the art, before not departing from the utility model principle
It puts, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model right
It is required that protection scope in.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (8)
1. a kind of powersupply system characterized by comprising
For exporting the main power circuit of main power DC electricity；
The boost voltage stable for output amplitude, input terminal connect the main power circuit output end, detect the main power
The output parameter of circuit and the auxiliary power circuit that the boost voltage amplitude is adjusted according to the output parameter；
Power end connects the output end of the auxiliary power circuit, and output end connects and controls the control list of the main power circuit
Member.
2. powersupply system according to claim 1, which is characterized in that the powersupply system further include:
Power end connects the heat-sink unit of the auxiliary power circuit output end.
3. powersupply system according to claim 1, which is characterized in that the output parameter includes: output electric current, defeated
Voltage and output power is one or more out.
4. powersupply system according to claim 1, which is characterized in that the auxiliary power circuit specifically includes:
The accessory power supply main circuit of output end output boost voltage；
Input terminal connects the main power circuit output end, detects the output parameter of the main power circuit, obtains detection parameters
Detection circuit；
Output end connects the control terminal of the accessory power supply main circuit, and first input end connects the defeated of the accessory power supply main circuit
Outlet detects the boost voltage, by the detected value of the boost voltage compared with a reference value, controlled according to comparison result described in
Accessory power supply main circuit, the stable boost voltage of output amplitude, the second input terminal connects the detection circuit, according to the detection
Parameter adjusts the voltage feedback circuit of the boost voltage amplitude.
5. powersupply system according to claim 4, which is characterized in that the detection circuit has an output end,
The detection parameters of output end output are output electric current measure parameter.
6. powersupply system according to claim 5, which is characterized in that the voltage feedback circuit specifically includes: the
One integrated transporting discharging, first resistor, second resistance and compensation network；Wherein,
The inverting input terminal of first integrated transporting discharging connects described first resistor one end, the other end conduct of the first resistor
The first input end of the voltage feedback circuit, the output end for connecting the accessory power supply main circuit；First integrated transporting discharging
Inverting input terminal be also connected with described second resistance one end, the other end of the second resistance is as the voltage feedback circuit
Second input terminal, the connection detection circuit；
The normal phase input end of first integrated transporting discharging is for inputting a reference value；
The output end of first integrated transporting discharging connects the accessory power supply master as the output end of the voltage feedback circuit
The control terminal of circuit；
The compensation network is connected between the inverting input terminal and output end of first integrated transporting discharging.
7. powersupply system according to claim 4, which is characterized in that the detection circuit has there are two output end,
Two output ends are respectively current detecting parameter output and voltage detecting parameter output；
Second input terminal of the voltage feedback circuit further includes two sub- input terminals, and two sub- input terminals respectively correspond company
Connect two output ends of the detection circuit.
8. powersupply system according to claim 7, which is characterized in that the voltage feedback circuit specifically includes: the
Two integrated transporting dischargings, 3rd resistor, the 4th resistance, the 5th resistance and compensation network；Wherein,
The inverting input terminal of second integrated transporting discharging connects described 3rd resistor one end, the other end conduct of the 3rd resistor
The first input end of the voltage feedback circuit, the output end for connecting the accessory power supply main circuit；Second integrated transporting discharging
Inverting input terminal be also connected with described 4th resistance one end and the 5th resistance one end, the other end of the 4th resistance and described
The other end of five resistance respectively as two sub- input terminals, be correspondingly connected with the detection circuit；
The normal phase input end of second integrated transporting discharging is for inputting a reference value；
The output end of second integrated transporting discharging connects the accessory power supply master as the output end of the voltage feedback circuit
The control terminal of circuit；
The compensation network is connected between the inverting input terminal and output end of second integrated transporting discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821430056.0U CN208723805U (en) | 2018-09-03 | 2018-09-03 | A kind of powersupply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821430056.0U CN208723805U (en) | 2018-09-03 | 2018-09-03 | A kind of powersupply system |
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| CN208723805U true CN208723805U (en) | 2019-04-09 |
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ID=65980736
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| CN201821430056.0U Expired - Fee Related CN208723805U (en) | 2018-09-03 | 2018-09-03 | A kind of powersupply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641268A (en) * | 2020-06-09 | 2020-09-08 | 云南电网有限责任公司电力科学研究院 | System and method for adjusting full load of direct current power supply |
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2018
- 2018-09-03 CN CN201821430056.0U patent/CN208723805U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641268A (en) * | 2020-06-09 | 2020-09-08 | 云南电网有限责任公司电力科学研究院 | System and method for adjusting full load of direct current power supply |
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Granted publication date: 20190409 Termination date: 20190903 |