CN206506750U - A kind of supply unit - Google Patents
A kind of supply unit Download PDFInfo
- Publication number
- CN206506750U CN206506750U CN201720193157.XU CN201720193157U CN206506750U CN 206506750 U CN206506750 U CN 206506750U CN 201720193157 U CN201720193157 U CN 201720193157U CN 206506750 U CN206506750 U CN 206506750U
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- China
- Prior art keywords
- module
- input end
- supply unit
- rectification
- emc
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Abstract
The utility model discloses a kind of supply unit, including first input end, electromagnetic compatibility (EMC) module, rectification module, DC-DC module, AC/DC module and the second input；The first input end, electromagnetic compatibility (EMC) module, rectification module, DC-DC module are sequentially connected；The AC/DC module is connected with the rectification module, first input end, and the AC/DC module is connected with the second input；The DC-DC module, AC/DC module connect load respectively.The utility model can work in the case of two kinds of civil power and high-frequency electrical, and being worked under civil power through safety certification can expand application.DC-DC module includes insulating power supply or non-isolated power supply, can meet safety certification.
Description
Technical field
The utility model belongs to power supply field, and in particular to a kind of supply unit.
Background technology
LED lamp tube is also a kind of common light fixture in LED daylight lamp, LED illumination lamp, LED similar with common fluorescent tube
Fluorescent tube energy-conserving and environment-protective, service life is long, with the decline of price, will certainly replace common fluorescent fluorescent tube, because fluorescent tube is opened
Lamp tube ends can produce high pressure when dynamic, and common LED fluorescent tube is that directly can not substitute conventional fluorescent, it is necessary to original electronics
Ballast or inductance starter remove, and civil power is directly accessed ability normal work, it is impossible to which compatible two kinds of fluorescent tubes are used.
Existing LED lamp tube power supply can make LED lamp tube directly replace conventional fluorescent lamps, but be due to it is complicated, into
This is higher, and service life is shorter, and stability is poor, and loss is higher, and the brightness of fluorescent tube differs.
Utility model content
The utility model provides a kind of supply unit for the above technological deficiency of prior art, and this supply unit can be with
Worked under civil power and high frequency voltage；Through safety certification civil power can be supplied when being worked under high frequency voltage in mains-supplied
Electric short circuit directly works, and improves operating efficiency.
The purpose of this utility model is achieved through the following technical solutions：
A kind of supply unit, including first input end, electromagnetic compatibility EMC modules, rectification module, DC-DC module, friendship
Stream/DC Module and the second input；The first input end, EMC modules, rectification module, DC-DC module connect successively
Connect；The AC/DC module is connected with the rectification module, first input end, the AC/DC module and the second input
End connection；The DC-DC module, AC/DC module connect load respectively.
Preferably, the AC/DC module and DC-DC module include insulating power supply or non-isolated power supply.
Preferably, the rectification module is two-phase bridge rectifier or three-phase bridge rectifier circuit.
Preferably, the EMC modules include one-level EMC modules and two grades of EMC modules, the one-level EMC modules respectively with
First input end and rectification module connection；Two grades of EMC modules connect with the rectification module and DC-DC module respectively
Connect.
Preferably, the first input end includes first input end (1) and first input end (2)；The first input end
(1) with the rectification module；The first input end (2) is connected with the AC/DC module.
Preferably, the AC/DC module includes transformer and electric capacity, and the transformer is in parallel with electric capacity, described to become
Depressor is connected by inductance with the first input end (2).
Preferably, in addition to turning circuit, described turning circuit one end is connected with two grades of EMC modules, the other end with
The AC/DC module connection.
Preferably, the turning circuit includes metal-oxide-semiconductor and voltage-regulator diode, the AC/DC module, the pole of voltage stabilizing two
Pipe, M0S pipes and two grades of EMC modules are sequentially connected in series.
Preferably, in addition to switch, the switch is arranged between AC/DC module and the second input.
Compared with prior art, a kind of supply unit of the utility model at least has the advantages that：
The utility model includes electromagnetic compatibility (EMC) module, rectification module, DC-DC module, auxiliary circuit and friendship
Stream/DC Module；Electromagnetic compatibility (EMC) module effectively raises Electro Magnetic Compatibility；When connecting civil power, pass through input
Input voltage, is exported after rectification module rectification and gives DC-DC module, and DC-DC module is exported to load；Direct current/
DC Module includes insulating power supply or non-isolated power supply, can meet safety certification.When connecting high-frequency electrical, voltage passes through defeated
Enter end and be output to AC/DC module by electric capacity and inductance, electric capacity by rectification module short circuit, voltage be directly inputted to exchange/
DC Module, is exported to load, AC/DC module includes insulating power supply or non-isolated after AC/DC module is handled
Power supply.Under special ballast or high frequency voltage, in the case of AC/DC module reaches necessarily, auxiliary circuit, auxiliary are turned on
DC-DC module short circuit is supplied electricity to load by circuit.The utility model can in the case of two kinds of civil power and high-frequency electrical work
Make, work and through safety certification can be mainly with LED, naturally it is also possible in other electronic products under civil power,
Expand application.
Brief description of the drawings
Fig. 1 is the theory diagram of the utility model embodiment supply unit；
Fig. 2 is the circuit theory diagrams of the utility model embodiment supply unit：
Fig. 3 is the principle schematic of another embodiment supply unit of the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, following examples be it is descriptive,
It is not limited, it is impossible to which protection domain of the present utility model is limited with this.
Make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be a part of embodiment of the utility model, rather than whole embodiment.Generally described in accompanying drawing and show here
The component of the utility model embodiment gone out can be arranged and designed with a variety of configurations.Therefore, below in accompanying drawing
The detailed description of the embodiment of the present utility model of middle offer is not intended to limit claimed scope of the present utility model, and
It is to be merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of the utility model protection.
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
Fig. 1 is the theory diagram of the utility model embodiment supply unit；Fig. 2 is the utility model embodiment supply unit
Circuit theory diagrams.
As shown in Figure 1 and Figure 2, supply unit of the present utility model, including input, electromagnetic compatibility (EMC) module, rectification
Module, DC-DC module, AC/DC module and auxiliary circuit, wherein：
Input includes first input end 1, the input of first input end 2 and second.First input end 1 and first input end
Include live wire L and zero line N in live wire L and zero line N, first input end 1 and the live wire L and zero line in first input end 2 in 2
N equipotentials；The live wire L and zero line N of first input end 2 are in series with electric capacity, through live wire after live wire L and zero line input electrical signal
L or zero line N outputs.
Electromagnetic compatibility (EMC) module and the connection of the input of first input end 1.Electromagnetic compatibility (EMC) module in the present embodiment
Including level electromagnetic compatible (one-level EMC) module and compatible (the two grades of EMC) module of two-stage electromagnetic.Electromagnetic compatibility (EMC) module
Sum of series quantity has depending on physical circuit, if need that electromagnetic compatibility (EMC) module handled can to add electromagnetism simultaneous
Hold (EMC) module.The input electrical signal of first input end 1 passes through a level electromagnetic compatible (EMC) resume module, simultaneous by one-level electromagnetism
Hold after (EMC) resume module, on the one hand, the electromagnetic interference that equipment is produced in normal course of operation to place environment is no more than
Certain limit value；On the other hand, device has a certain degree of immunity to interference to electromagnetic interference present in the environment of place.
Rectification module connects electromagnetic compatibility (EMC) module, after processing of the electric signal by a level electromagnetic compatible (EMC) module
Export to rectification module, the electric signal received is carried out rectification processing, ac signal is converted to direct current by rectification module
Signal, is then exported.
Diode BD1, diode BD2 and diode BD5 in two-stage electromagnetic compatibility (two grades of EMC) module connection rectification module
Negative pole, to rectification module export electric signal carry out electromagnetic compatibility processing, then exported.
DC-DC module connects two grades of EMC modules.The DC-DC module is received after two grades of EMC resume modules
Electric signal, then DC-DC module the electric signal received is handled.Wherein, DC-DC module includes isolation
Power supply or non-isolated power supply.Insulating power supply is used for carrying out Safety Approval；DC-DC module will be exported after Electric signal processing
To load；If electric signal is before output is to load not through over commutation, it is necessary to carry out rectification by commutation diode.Its
In, DC-DC module is constant-current source, can be with output constant current electric signal.
The live wire L and zero line N of first input end 2 are in series with electric capacity CX2 and electric capacity CX3 respectively, and inductance L1 is connected to electric capacity
Between CX2 and electric capacity CX3, and it is connected with the positive pole of diode BD5 in rectification module.The low characteristic of high resistant is led to according to electric capacity, when
When inputting high frequency electrical signal, electric capacity CX2 and electric capacity CX3 are by rectification module short circuit, and electric signal is directly over inductance L1 and is output to friendship
Stream/DC Module, inductance L1 plays metering function, for adjusting watt level.AC/DC module is by the electric signal received
Exported after reason to load.AC/DC module includes isolation or non-isolated power supply, in the case where needing safety certification, every
It is used for through safety certification from power supply.
Fuse FU plays protection, and two ends power, when current is excessive, and fuse FU disconnects, and circuit becomes open circuit.
Auxiliary circuit includes the D2 of metal-oxide-semiconductor and voltage-regulator diode, and the input of AC/DC module be (i.e. diode BD8's
Input) pass through the grid of the voltage-regulator diode D2 connections metal-oxide-semiconductor, the drain electrode of metal-oxide-semiconductor and the output of one-level EMC modules
End is connected, its source class ground connection.Auxiliary circuit in the utility model can also be not provided with common power circuit, auxiliary electricity
Road is in both end power supplying, and the part of civil power work is not lost.
Switch K plays protection in circuit, and switch K closures could be turned on.Switch K in the utility model can be set
Put, can also be not provided with.If being not provided with directly connecting after switching K, circuit connection power supply.
The utility model supply unit is illustrated with reference to Fig. 2, as shown in Fig. 2 rectification module can be biphase rectification
Bridge and three-phase commutation bridge etc..Illustrated in the present embodiment by taking three-phase commutation bridge as an example, the three-phase bridge rectification bridge includes two
Pole pipe BD1, diode BD2, diode BD3, diode BD4, diode BD5 and diode BD6.Diode BD1, diode
BD2 and diode BD5 negative pole are connected with each other, diode BD1 cathode connecting diode BD3 negative pole, and diode BD2 is just
Pole connection diode BD4 negative pole, diode BD5 cathode connecting diode BD6 negative pole, diode BD3, diode BD4,
Diode BD6 positive pole is connected with each other.Diode BD1, diode BD2 and diode BD5 negative pole export electricity as output end
Signal.Diode BD1, diode BD2 and diode BD5 negative pole in two grades of EMC modules connection rectification modules, to rectification
The electric signal of module output carries out electromagnetic compatibility processing, is then exported.
DC-DC module connects two grades of EMC modules, and DC-DC module receives the telecommunications after two grades of EMC resume modules
Number, then DC-DC module is handled the electric signal received.Wherein, DC-DC module includes insulating power supply
Or non-isolated power supply, insulating power supply be used for carried out Safety Approval；DC-DC module will be exported after Electric signal processing to negative
Carry；If electric signal is before output is to load not through over commutation, it is necessary to rectification be carried out by commutation diode, such as 2 figures
Diode BD7 and diode BD8.DC-DC module is constant-current source, can be with output constant current electric signal.
Transformer T1 and electric capacity CX4 can also be included in exchange/rectification module in the utility model, transformer T1 is used for
Transformation, electric capacity CX4 is as auxiliary capacitor, for helping to start high-frequency voltage generator, such as electric ballast.The utility model
Transformer T1 can not be included in middle exchange/rectification module, set other circuits to be changed voltage.
When the auxiliary circuit connects special ballast, auxiliary circuit is used for starting special ballast, first input end 2
Special electric ballast is connected, electric capacity CX2 or electric capacity CX3 are short-circuit by rectification module, live wire L, zero line N, inductance L1, transformer
T1, switch, N1, N2 formation loop；Transformer T1 output voltages reach after certain value that the metal-oxide-semiconductor conducting in auxiliary circuit is aided in
Circuit is by DC-DC module short circuit, only AC/AC module powering load.
When civil power single-ended power, first input end 1, rectification module, one-level EMC modules and the load of DC-DC module
Form loop, powering load.During both end power supplying, inputted from the live wire L or zero line N in first input end, electric current is passed through successively
One in diode BD5, diode BD2, diode BD1 in over commutation module, one-level EMC modules, DC-DC mould
One in diode BD6, diode BD4, diode BD3 in block, load, rectification module, inductance L1, electric capacity CX4, switch
K, N1, N2, ultimately form loop.
When high frequency electric source is powered, such as when connecting special ballast and powering, both end power supplying, first input end 2 connects spy
Rectification module short circuit, electric current are sequentially passed through live wire L, zero line N, inductance L1, transformer by different ballast, electric capacity CX2 or electric capacity CX3
T1, switch K, N1, N2, ultimately form loop.Transformer T1 output voltages reach after certain value that the metal-oxide-semiconductor in auxiliary circuit is led
Logical, auxiliary circuit is by DC-DC module short circuit, only AC/AC module powering load.
If as shown in figure 3, rectification module is two-phase rectifier bridge, including diode BD1, diode BD2, diode BD3, two
Pole pipe BD4.The diode BD1, diode BD2 negative pole are connected, and diode BD3, diode BD4 positive pole are connected；Two poles
Pipe BD3 negative pole connection diode BD1 positive pole, diode BD4 annex connection diode BD2 positive pole；Diode BD3,
Diode BD4 plus earth.Diode BD1, diode BD2 negative pole in two grades of EMC modules connection rectification modules, to rectification
The electric signal of module output carries out electromagnetic compatibility processing, is then exported.
DC-DC module connects two grades of EMC modules, and DC-DC module receives the telecommunications after two grades of EMC resume modules
Number, then DC-DC module is handled the electric signal received, wherein, DC-DC module includes insulating power supply
Or non-isolated power supply, insulating power supply be used for carried out Safety Approval；DC-DC module will be exported after Electric signal processing to negative
Carry；If electric signal is before output is to load not through over commutation, it is necessary to carry out rectification by commutation diode.Direct current/straight
Flow module is constant-current source, can be with output constant current electric signal.
The live wire L and zero line N of first input end 2 are connected to electric capacity CX2 and electric capacity CX3, and inductance L1 is connected to electric capacity
Between CX2 and electric capacity CX3.
The low characteristic of high resistant is led to according to electric capacity, when inputting high frequency electrical signal, electric capacity CX2 and electric capacity CX3 are by rectification module
Short circuit, electric signal is directly over inductance L1 and is output to AC/DC module, and inductance L1 plays metering function, big for adjusting power
It is small.AC/DC module will be exported to load after the Electric signal processing received.AC/DC module includes isolation or non-
Insulating power supply, in the case where needing safety certification, insulating power supply is used for through safety certification.Fuse FU plays the work of protection
With two ends power, when current is excessive, and fuse FU disconnects, and circuit becomes open circuit.
When civil power single-ended power, first input end 1, rectification module, one-level EMC modules and the load of DC-DC module
Form loop, powering load.During both end power supplying, inputted from the live wire L or zero line N in first input end, in rectification module
Diode BD2, diode BD1, one-level EMC modules, DC-DC module is short-circuited；Voltage or electric current are directly over electric capacity
CX2/CX3, inductance L1, transformer T1, switch K, N-terminal, transformer T1 supply electricity to load.
When high frequency electric source is powered, such as special ballast, both end power supplying, first input end 2 connects special electronic ballast
Device, electric capacity CX2 or CX3 forms back rectification module short circuit, live wire L, zero line N, inductance L1, transformer T1, switch K, N1, N2
Road.Auxiliary circuit (including metal-oxide-semiconductor, voltage-regulator diode) shown in Fig. 2 can be set in the present embodiment, and its principle is identical.
Switch K in the present embodiment, transformer T1 can be set to be not provided with, and transformer T1 can use other transformations
Circuit is replaced.
To sum up, the embodiment of the utility model supply unit, as shown in Figure 2 and Figure 3, according to the whole of the supply unit
It is two-phase or three-phase commutation bridge to flow bridge, if with auxiliary circuit, and whether with switch K, has the implementation of 9 kinds of combinations
Example, i.e., except above-mentioned rectifier bridge is three-phase commutation bridge, band auxiliary circuit, with switch K；Rectifier bridge is two-phase rectifier bridge, without auxiliary
Help circuit, with switch K embodiment implementation exception, in addition to rectifier bridge be three-phase commutation bridge, without auxiliary circuit, carry
Switch K embodiment；Rectifier bridge is three-phase commutation bridge, without auxiliary circuit, without switch K embodiment；Rectifier bridge is three
Commutating phase bridge, with auxiliary circuit, without switch K embodiment；Rectifier bridge be two-phase rectifier bridge, without auxiliary circuit,
Without switch K embodiment；Rectifier bridge is two-phase rectifier bridge, the embodiment with auxiliary circuit, with switch K；Rectifier bridge
For two-phase rectifier bridge, with auxiliary circuit, without switch K embodiment；AC/DC modules are with transformer and without transformation
The embodiment of device.Unspecified several embodiments, can carry out similar analysis, here according to the description of previous embodiment
No longer repeat one by one.
The utility model preferably embodiment is these are only, but the protection domain of utility model is not limited to
This, any one skilled in the art is in the technical scope that the utility model is disclosed, the change that can be readily occurred in
Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with right
The protection domain of claim is defined.
Claims (9)
1. a kind of supply unit, it is characterised in that including first input end, electromagnetic compatibility EMC modules, rectification module, direct current/straight
Flow module, AC/DC module and the second input；The first input end, EMC modules, rectification module, DC-DC mould
Block is sequentially connected；The AC/DC module is connected with the rectification module, first input end, the AC/DC module with
Second input is connected；The DC-DC module, AC/DC module connect load respectively.
2. supply unit according to claim 1, it is characterised in that the AC/DC module and DC-DC module
Include insulating power supply or non-isolated power supply.
3. supply unit according to claim 1, it is characterised in that the rectification module be two-phase bridge rectifier or
Three-phase bridge rectifier circuit.
4. supply unit according to claim 1, it is characterised in that the EMC modules include one-level EMC modules and two grades
EMC modules, the one-level EMC modules are connected with first input end and rectification module respectively；Two grades of EMC modules respectively with institute
State rectification module and the connection of DC-DC module.
5. supply unit according to claim 1, it is characterised in that the first input end includes first input end (1)
With first input end (2)；The first input end (1) and the rectification module；The first input end (2) with it is described exchange/
DC Module is connected.
6. supply unit according to claim 5, it is characterised in that the AC/DC module includes transformer and electricity
Hold, the transformer is in parallel with electric capacity, and the transformer is connected by inductance with the first input end (2).
7. supply unit according to claim 4, it is characterised in that also including turning circuit, described turning circuit one end
It is connected with two grades of EMC modules, the other end is connected with the AC/DC module.
8. supply unit according to claim 7, it is characterised in that the turning circuit includes metal-oxide-semiconductor and the pole of voltage stabilizing two
Pipe, the AC/DC module, voltage-regulator diode, M0S pipes and two grades of EMC modules are sequentially connected in series.
9. supply unit according to claim 1, it is characterised in that also including switch, the switch is arranged on exchange/directly
Between flow module and the second input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720193157.XU CN206506750U (en) | 2017-03-01 | 2017-03-01 | A kind of supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720193157.XU CN206506750U (en) | 2017-03-01 | 2017-03-01 | A kind of supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206506750U true CN206506750U (en) | 2017-09-19 |
Family
ID=59842118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720193157.XU Expired - Fee Related CN206506750U (en) | 2017-03-01 | 2017-03-01 | A kind of supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206506750U (en) |
-
2017
- 2017-03-01 CN CN201720193157.XU patent/CN206506750U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170919 Termination date: 20200301 |