CN205792250U - Dual input Switching Power Supply - Google Patents
Dual input Switching Power Supply Download PDFInfo
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- CN205792250U CN205792250U CN201620337559.8U CN201620337559U CN205792250U CN 205792250 U CN205792250 U CN 205792250U CN 201620337559 U CN201620337559 U CN 201620337559U CN 205792250 U CN205792250 U CN 205792250U
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Abstract
This utility model relates to a kind of Switching Power Supply, is specifically related to a kind of dual input Switching Power Supply.First electric energy of described first feeder ear output is converted into the first predetermined power and detects by rear output in the first detector unit by the first processing unit；Second electric energy of described second feeder ear output is converted into the second predetermined power and detects by rear output in described second detector unit by the second processing unit；Converter unit accepts described first predetermined power and/or described second predetermined power, and forms the electric power signal output after a conversion according to described first predetermined power and/or described second predetermined power.
Description
Technical field
This utility model relates to a kind of Switching Power Supply, is specifically related to a kind of dual input Switching Power Supply.
Background technology
In the application scenario of some high reliability request, such as power system transformer substation relay protection power supply, it is opened
Close power supply using the mutually isolated alternating current power supply of two-way as input, to meet the redundancy backup requirement that input AC is powered.This
Two-way AC-input voltage is respectively from two different distribution transformers used, and its AC phases is different with amplitude, and therefore two
Electric insulation requirement to be met between road exchange input and the output of Switching Power Supply.As it is shown in figure 1, existing a kind of double-circuit communication
Input switching circuit structural representation, this double-circuit communication input switch power supply has Industrial Frequency Transformer, a high-frequency converter, the
One AC-input voltage is connected to the first input end of high-frequency converter, the second exchange through the first commutator, the first diode
Input voltage is connected to the second input of high-frequency converter, the work of Industrial Frequency Transformer through the second commutator, the second diode
By the electrical isolation being to ensure that two-way exchange inputs, the exchange input of final two-way shares a high-frequency converter, the first diode
Effect with the second diode is to ensure that two-way AC-input voltage Hot Spare each other.This relevant double-circuit communication input switch electricity
Source advantage is that framework is simple, but its obvious shortcoming be have employed the Industrial Frequency Transformer of heaviness realize two-way input electric every
From, volume is big, and efficiency is low.For the problems referred to above, the two-way switch power supply after improvement is as shown in Figure 2.Two-way switch power supply
Parallel circuit architecture is made up of two switch power parallels.First via exchange input is through the first rectifier bridge, the first high frequency conversion
Outfan received by device, the first diode；Second tunnel exchange input is through the second rectifier bridge, the second high-frequency converter, the two or two pole
Pipe is parallel to outfan.The effect of the first diode and the second diode is to ensure that two-way exports Hot Spare each other.This two-way is opened
Close power supply parallel circuit architecture and possess the advantage that power density is high owing to having abandoned Industrial Frequency Transformer, but it also has two simultaneously
Individual shortcoming: one is to need two set high-frequency converters, controls circuit and two set loop of power circuit, two high frequency transformers including two sets,
This will bring the rising of cost；Two is generally to be significantly larger than output voltage, the first diode and the due to input voltage
Outlet side has been changed in the position of two diodes, and the electric current flowing through two diodes is greatly increased, and this will cause loss of efficiency.
Utility model content
The technical problems to be solved in the utility model is the dual input Switching Power Supply providing a kind of power density high, can
Realize the Switching Power Supply of the dual input of electrical isolation, between a kind of two-way power supply for inputting, input and export
Between all have the Switching Power Supply of electric insulation requirement.This utility model solves above-mentioned technology by such technical scheme and asks
Topic: a kind of dual input Switching Power Supply, wherein: include
First processing unit, is connected between the first feeder ear and the first detector unit, in order to by described first feeder ear
First electric energy of output is converted into the first predetermined power and detects by rear output in the first detector unit；
Second processing unit, is connected between the second feeder ear and the second detector unit, in order to by described second feeder ear
Second electric energy of output is converted into the second predetermined power and detects by rear output in described second detector unit；
Converter unit, connects described first detector unit and described second detector unit, respectively in order to accept described first
Predetermined power and/or described second predetermined power, and according to described first predetermined power and/or described second predetermined power shape
Become the electric power signal output after a conversion.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described first processing unit at least includes:
First rectification unit, in order to carry out rectification process to described first electric energy.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described first rectification unit is full-wave rectifying circuit.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described first rectification unit is half-wave rectifying circuit.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described second processing unit at least includes
Second rectification unit, in order to carry out rectification process to described second electric energy.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described second rectification unit is full-wave rectifying circuit.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described second rectification unit is half-wave rectifying circuit.
Preferably, above-mentioned dual input Switching Power Supply, wherein: described converter unit at least includes
3rd rectification unit, processes in order to described electric power signal to be done secondary rectification, and it is defeated to form a rectification electric power signal
Go out；
Filter unit, in order to accept described rectification electric power signal, and does Filtering Processing with shape to described rectification electric power signal
The filtering electric power signal output of Cheng Yiyu load matched.
Compared with prior art, this utility model has the advantage that employing the utility model has the advantage of: pass through
First detector unit and the second detector unit are in order to ensure that two-way exports Hot Spare each other.Converter unit realizes the input of two-way electric energy
Electrical isolation.Secondly, this utility model, only with a converter unit, reduces the production cost of Switching Power Supply, additionally
By the first detector unit, the second detector unit as converter unit before, on the one hand can ensure in the first electric energy, the second electric energy
When different, Switching Power Supply can export stable voltage signal, and the electric energy on the other hand also reducing outfan disappears
Consumption.
Accompanying drawing explanation
Fig. 1 is existing a kind of double-circuit communication input switch circuit construction of electric power schematic diagram.Fig. 2 is existing a kind of two-way
Switching power circuit structural representation.The circuitry block schematic diagram of Fig. 3 a kind of dual input Switching Power Supply of the present utility model.
Detailed description of the invention
Describe detailed description of the invention of the present utility model below in conjunction with the accompanying drawings in detail.As it is shown on figure 3, a kind of dual input is opened
Close power supply, wherein: include
First processing unit, is connected between the first feeder ear and the first detector unit, in order to by described first feeder ear
First electric energy of output is converted into the first predetermined power and detects by rear output in the first detector unit；
Second processing unit, is connected between the second feeder ear and the second detector unit, in order to by described second feeder ear
Second electric energy of output is converted into the second predetermined power and detects by rear output in described second detector unit；
Converter unit, connects described first detector unit and described second detector unit, respectively in order to accept described first
Predetermined power and/or described second predetermined power, and according to described first predetermined power and/or described second predetermined power shape
Become the electric power signal output after a conversion.
Operation principle of the present utility model is:
First electric energy of described first feeder ear output is converted into the first predetermined power and in first by the first processing unit
Detector unit detects by rear output；It is pre-that second electric energy of described second feeder ear output is converted into second by the second processing unit
Determine electric energy and detect by rear output in described second detector unit；Converter unit accepts described first predetermined power and/or institute
State the second predetermined power, and form the electric energy after a conversion according to described first predetermined power and/or described second predetermined power
Signal exports.
Employing the utility model has the advantage of: by the first detector unit and the second detector unit in order to ensure that two-way is defeated
Go out Hot Spare each other.Converter unit realizes the electrical isolation of two-way electric energy input.Secondly, this utility model is only with a change
Change unit, reduce the production cost of Switching Power Supply, additionally by the first detector unit, the second detector unit as converter unit it
Before, on the one hand can ensure that Switching Power Supply can export stable voltage in the first electric energy, the second electric energy when different
Signal, another conveniently also reduces the power consumption (because output electric current is low, then the electric energy loss produced reduces) of outfan.
As further preferred embodiment, above-mentioned dual input Switching Power Supply, wherein: described first processing unit is extremely
Include less:
First rectification unit, in order to carry out rectification process to described first electric energy.Further, described first rectification unit
For full-wave rectifying circuit.Further, described first rectification unit is half-wave rectifying circuit.
As further preferred embodiment, above-mentioned dual input Switching Power Supply, wherein: described second processing unit is extremely
Include less
Second rectification unit, in order to carry out rectification process to described second electric energy.Further, described second rectification unit
For full-wave rectifying circuit.Further, described second rectification unit is half-wave rectifying circuit.
As further preferred embodiment, above-mentioned dual input Switching Power Supply, wherein: described converter unit at least wraps
Include
3rd rectification unit, processes in order to described electric power signal to be done secondary rectification, and it is defeated to form a rectification electric power signal
Go out；
Filter unit, in order to accept described rectification electric power signal, and does Filtering Processing with shape to described rectification electric power signal
The filtering electric power signal output of Cheng Yiyu load matched.
Enumerating a detailed description of the invention, converter unit is mainly by a high-frequency converter, power tube, a set of control circuit and defeated
Go out side rectification filtering circuit to be formed.This high frequency transformer includes the first primary coil, the second primary coil and secondary coil, the
One primary coil is N1 circle coil, the second primary coil be N2 circle coil, the 3rd primary coil be N3 circle coil.Three coil phases
Insulate mutually and have a resistance to pressure request, thus the electrical isolation requirement between meeting between two-way input, inputting and export.This practicality is new
Dual input Switching Power Supply involved by type, enumerates one and has implementation process, is alternating current with the first electric energy, the second electric energy and is
Example, under the first electric energy voltage is higher than the second electric energy voltage status, the first predetermined power is added in first through the first detector unit
Primary coil two ends produce exciting current and the first primary current, induce phase in the second primary coil, secondary coil simultaneously
The voltage answered, the voltage of secondary coil sensing rectifying and wave-filtering in converter unit is as output voltage, in secondary coil sense
The voltage answered is less than under the state of the second predetermined power output voltage, and the second detector unit is in cut-off state, then supplied by first
Electricity end output provides electric energy to load, and the second feeder ear is then in Light Condition.Voltage in the first feeder ear output equally is low
In the voltage of the second feeder ear output, the first detector unit is in cut-off state, then provided electric energy by the second feeder ear to load,
First feeder ear is in Light Condition.
In short, in the instantaneous difference of the voltage of the first feeder ear output and the voltage of the second feeder ear output not enough so that
Detector unit is in cut-off state, and the first electric energy, the second electric energy will provide energy to outlet side jointly.In above-mentioned embodiment,
It is equally applicable to two-way direct current energy.In above-described embodiment, only using a converter unit, power density is high, and circuit is not only
It is applicable to the situation that two-way input nominal voltage is identical, it is also possible to by adjusting the transformer turns ratio in converter unit, for two
The situation that input nominal voltage in road does not waits, circuit is applicable not only to the situation of two-way electrical isolation exchange input, applies also for two
The situation of road electrical isolation direct current input, apply also for electrical isolation, a road exchange the situation of a road direct current.It addition, circuit
In all switching tubes can share a set of control circuit, low cost.The foregoing is only preferable embodiment party of the present utility model
Formula, protection domain of the present utility model is not limited with above-mentioned embodiment, as long as those of ordinary skill in the art are according to this reality
The equivalence made by novel disclosure is modified or change, all should include in the protection domain described in claims.
Claims (8)
1. a dual input Switching Power Supply, it is characterised in that: include
First processing unit, is connected between the first feeder ear and the first detector unit, in order to by described first feeder ear output
The first electric energy be converted into the first predetermined power and in first detector unit detect by rear output；
Second processing unit, is connected between the second feeder ear and the second detector unit, in order to by described second feeder ear output
The second electric energy be converted into the second predetermined power and in described second detector unit detect by rear output；
Converter unit, connects described first detector unit and described second detector unit respectively, makes a reservation in order to accept described first
Electric energy and/or described second predetermined power, and form one according to described first predetermined power and/or described second predetermined power
Electric power signal output after conversion.
Dual input Switching Power Supply the most according to claim 1, it is characterised in that: described first processing unit at least wraps
Include:
First rectification unit, in order to carry out rectification process to described first electric energy.
Dual input Switching Power Supply the most according to claim 2, it is characterised in that: described first rectification unit is that all-wave is whole
Current circuit.
Dual input Switching Power Supply the most according to claim 2, it is characterised in that: described first rectification unit is that half-wave is whole
Current circuit.
Dual input Switching Power Supply the most according to claim 1, it is characterised in that: described second processing unit at least includes
Second rectification unit, in order to carry out rectification process to described second electric energy.
Dual input Switching Power Supply the most according to claim 5, it is characterised in that: described second rectification unit is that all-wave is whole
Current circuit.
Dual input Switching Power Supply the most according to claim 5, it is characterised in that: described second rectification unit is that half-wave is whole
Current circuit.
Dual input Switching Power Supply the most according to claim 1, it is characterised in that: described converter unit at least includes
3rd rectification unit, processes in order to described electric power signal to be done secondary rectification, and forms a rectification electric power signal output；
Filter unit, in order to accept described rectification electric power signal, and does Filtering Processing to form one to described rectification electric power signal
Export with the filtering electric power signal of load matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337559.8U CN205792250U (en) | 2016-04-21 | 2016-04-21 | Dual input Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620337559.8U CN205792250U (en) | 2016-04-21 | 2016-04-21 | Dual input Switching Power Supply |
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| Publication Number | Publication Date |
|---|---|
| CN205792250U true CN205792250U (en) | 2016-12-07 |
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| CN201620337559.8U Active CN205792250U (en) | 2016-04-21 | 2016-04-21 | Dual input Switching Power Supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230262A (en) * | 2016-04-21 | 2016-12-14 | 上海麟荣电子技术有限公司 | Dual input Switching Power Supply |
| CN111490588A (en) * | 2020-04-02 | 2020-08-04 | 国网浙江省电力有限公司杭州供电公司 | Method for realizing mutual backup of communication power supply and operation power supply of transformer substation |
-
2016
- 2016-04-21 CN CN201620337559.8U patent/CN205792250U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230262A (en) * | 2016-04-21 | 2016-12-14 | 上海麟荣电子技术有限公司 | Dual input Switching Power Supply |
| CN111490588A (en) * | 2020-04-02 | 2020-08-04 | 国网浙江省电力有限公司杭州供电公司 | Method for realizing mutual backup of communication power supply and operation power supply of transformer substation |
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| GR01 | Patent grant |