CN209448928U - A kind of LED power and redundancy LED power - Google Patents
A kind of LED power and redundancy LED power Download PDFInfo
- Publication number
- CN209448928U CN209448928U CN201821665140.0U CN201821665140U CN209448928U CN 209448928 U CN209448928 U CN 209448928U CN 201821665140 U CN201821665140 U CN 201821665140U CN 209448928 U CN209448928 U CN 209448928U
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- Prior art keywords
- circuit
- led
- relay
- led power
- voltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model relates to a kind of LED power and redundancy LED powers, a kind of LED power of the utility model includes LED drive circuit, the switching circuit being connect with LED drive circuit, the voltage coupling circuit of LED drive circuit and switching circuit are connected, voltage coupling circuit are used for coupled voltages being switched on or off with control switch circuit from LED drive circuit.It is simple to implement the utility model circuit design, high reliablity.
Description
Technical field
The utility model relates to LED power technical fields, more specifically to a kind of LED power and redundancy LED electricity
Source.
Background technique
First in existing LED power supply system, to improve reliability and easy access maintenance, generally use by one or more
The power supply system that primary power cource equipment and a standby power supply apparatus are formed in parallel.Power-supply system is eliminated by the redundancy structure
Single Point of Faliure.In power sources in parallel redundancy electric power supply system, when wherein a power panel breaks down, system needs automatic rejection should
Power panel, and by other extra system loadings of power panel shared, so that it is guaranteed that other equipment operate normally in system.
It is simultaneously also to prevent from one platform power supply from will not influence other power supplys when exporting short failure over the ground to work normally.
Traditional redundant power design, is realized in parallel output to power bus in a manner of disjunction gate superfluous using diode
It is remaining.But electric current is all very big in redundant power, and since the pressure drop of itself of diode is very big, the power consumption of generation is very big, needs to pacify
Fill cooling fin.Therefore, using diode disjunction gate tradition redundancy approach low efficiency and volume it is big.Another uses two direct currents
Power module, four metal-oxide-semiconductors and two second controller groups build up a kind of redundant circuit, the complex first device of such mode route
Part is also more, reliable to reduce relatively.
Have as following drawbacks in existing LED drive power technology:
1., if control is bad (without synchronized signal or crisscross parallel), being meeting when output uses synchronous rectification
Circulation is generated, an output positive current is shown as, a negative current is easy to damage synchronous rectification MOS at this time.
2. existing simply keep the efficiency of complete machine relatively low the defects of output increases diode, and loss is big, and temperature is high.
3. there is a special case, when the raw short circuit that has been exactly a power output end, such as output diode breakdown etc., such as
Fruit does not connect redundant module, this damage power supply will pulling off whole system, cause the loss of power accident.
Utility model content
The technical problem to be solved by the present invention is to provide one for the above-mentioned portion of techniques defect of the prior art
A kind of LED power of kind and redundancy LED power.
The technical scheme adopted by the utility model to solve the technical problem is as follows: constructing a kind of LED power includes LED driving
Circuit, the switching circuit connecting with the LED drive circuit connect the voltage of the LED drive circuit and the switching circuit
Coupling circuit, the voltage coupling circuit be used for from the LED drive circuit coupled voltages to control the switching circuit
It is switched on or off.
Preferably, the switching circuit includes relay K1, and the input terminal of the relay K1 connects the LED driving electricity
The coil-end on road, the relay K1 connects the voltage coupling circuit.
Preferably, the LED drive circuit includes EMI circuit, rectification circuit, pfc circuit, the PWM of successively cascade connection
Circuit and circuit of synchronous rectification, and the reduction voltage circuit of the connection pfc circuit and the pwm circuit.
Preferably, the voltage coupling circuit connect the reduction voltage circuit.
Preferably, the voltage coupling circuit include resistance R4, and one end of the resistance R4 connects the reduction voltage circuit
Output end, the other end of the resistance R4 connect the coil-end of the relay K1.
Preferably, the voltage coupling circuit connect the circuit of synchronous rectification.
Preferably, the voltage coupling circuit include described in one end connection of resistance R4' and capacitor C1, the resistance R4'
The output end of circuit of synchronous rectification, the other end of the resistance R4' connect the relay K1 coil-end and the capacitor C1,
And it is grounded through the capacitor C1.
Preferably, the relay K1 is normally opened relay.
Preferably, the model T73 of the relay K1.
In addition, the utility model also constructs a kind of redundancy LED power, including at least two as described in any one above
LED power, at least two LED power are connected in parallel.
The LED power and redundancy LED power for implementing the utility model, have the advantages that circuit design is simple, can
By property height.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is a kind of circuit diagram of LED power first embodiment of the utility model；
Fig. 2 is a kind of circuit diagram of LED power second embodiment of the utility model；
Fig. 3 is a kind of circuit diagram of LED power 3rd embodiment of the utility model；
Fig. 4 is a kind of circuit diagram of LED power fourth embodiment of the utility model；
Fig. 5 is a kind of circuit diagram of the 5th embodiment of LED power of the utility model.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed
Illustrate specific embodiment of the present utility model.
As shown in Figure 1, in a kind of LED power first embodiment of the utility model, including LED drive circuit 10, with
The switching circuit 30 that LED drive circuit 10 connects connects the voltage coupling circuit 20 of LED drive circuit 10 and switching circuit 30,
Voltage coupling circuit 20 are used for coupled voltages being switched on or off with control switch circuit 30 from LED drive circuit 10.Specifically
, exchange input is converted to direct current output by LED drive circuit 10, and the direct current output is by switching circuit 30 with to be powered
LED connection couples electricity by the voltage coupling circuit 20 connecting with LED drive circuit 10 herein from LED drive circuit 10
Pressure, the coupled voltages be used to control switch circuit 30 it is on or off, realize LED drive circuit 10 direct current output with to
The LED connection of power supply.
Further, switching circuit 30 includes relay K1, and the input terminal of relay K1 connects LED drive circuit 10, after
The coil-end of electric appliance K1 connects voltage coupling circuit 20.Specifically, defeated by the direct current that relay K1 controls LED drive circuit 10
Out with the connection or disconnection of LED to be powered, the input terminal of relay K1 connects LED drive circuit 10, relay K1 here
Output end connect LED to be powered, the coil-end of relay K1 connects voltage coupling circuit 20, when 10 work of LED drive circuit
When making, voltage coupling circuit 20 are coupled to voltage from LED drive circuit 10, which exports to the coil of relay K1
End, after making the coil of relay K1 have electric current to pass through, the output end closure of absorption relay K1 makes the defeated of LED drive circuit 10
It is connected out to LED power supply to be powered, so that the LED is worked normally.
Further, in embodiment as Figure 2-Figure 5, LED drive circuit 10 includes the EMI electricity of successively cascade connection
Road 11, rectification circuit 12, pfc circuit 13, pwm circuit 14 and circuit of synchronous rectification 15, and connection pfc circuit 13 and PWM electricity
The reduction voltage circuit 16 on road 14.Specifically, LED drive circuit 10 includes and exchanges input connection, circuit input is protected
EMI circuit 11, rectification circuit 12 are used to rectify exchange input the direct current to obtain, and pfc circuit 13 is used for through over commutation
Output DC boosting high voltage direct current simultaneously carries out power factor correcting, and pwm circuit 14 is used to high-voltage dc voltage passing through transformer
It is converted into isolation low-voltage output, synchronous current circuit 15 is used into rectification export low-voltage with the low-voltage direct obtained；Decompression electricity
Road 16 is used to be converted into high voltage direct current non-isolated low-voltage dc voltage VCC to power supplies such as PFC, PWM control IC.
Further, voltage coupling circuit 20 connect reduction voltage circuit 16.Specifically, as with the embodiments shown in figures 2 and 3
In, voltage coupling circuit 20 connect reduction voltage circuit 16, and coupling is carried out by the output to reduction voltage circuit 16 and obtains coupled voltages, with
Control switch circuit 30 works.
Further, as shown in figure 3, voltage coupling circuit 20 include resistance R4, one end of resistance R4 connects reduction voltage circuit
16 output end, the coil-end of the other end connection relay K1 of resistance R4.Specifically, the output of reduction voltage circuit 16 offer one auxiliary
Voltage VCC is helped, boost voltage VCC supplies relay K1 after passing through resistance R4 current limliting, is closed relay K1 output end, realizes
Output is connected.When boost voltage VCC disappears, relay K1 is in an off state, and effectively avoids the voltage of other power supplys from falling at this time
It fills or influences other power supplys and work normally.
Further, as shown in Figure 4 and Figure 5, voltage coupling circuit 20 connect circuit of synchronous rectification 15.Specifically, can be with
The coupled voltages from the output voltage of circuit of synchronous rectification 15, here it also will be understood that from the supply voltage of LED to be powered
Coupled voltages, with the work of control switch circuit 30.
Further, as shown in figure 5, voltage coupling circuit 20 include resistance R4' and capacitor C1, one end of resistance R4' connects
Connect the output end of circuit of synchronous rectification 15, the coil-end and capacitor C1 of the other end connection relay K1 of resistance R4' and through capacitor
C1 ground connection.Specifically,
Further, relay K1 is normally opened relay.Specifically, being opening-wide state by relay K1, only to line
When circle end has electric current to pass through, just closing is connected input and output.Here the model T73 of relay K1.
In addition, the utility model also constructs a kind of redundancy LED power, including at least two, such as the LED of any one is electric above
Source, at least two LED powers are connected in parallel.Specifically, being connected in parallel by multiple above-mentioned LED powers, it is possible to reduce each
The output electric current of LED power reduces the consumption to single led power supply, while LED power damage wherein occurs, or LED occur
10 output abnormality of driving circuit or without input when, which will be switched off, Neng Gouyou
Effect avoids the voltage of other power supplys from flowing backward or influence other power supplys normal works.
It should be understood that above embodiments only express preferred embodiments of the present invention, describe more specific
With it is detailed, but it should not be understood as limiting the scope of the patent of the utility model；It should be pointed out that for this field
Those of ordinary skill for, without departing from the concept of the premise utility, can to above-mentioned technical characterstic carry out freely
Combination, various modifications and improvements can be made, and these are all within the protection scope of the present invention；Therefore, all practical with this
The equivalents and modification that novel scope of the claims is done, should belong to the covering scope of the utility model claims.
Claims (10)
1. a kind of LED power, which is characterized in that including LED drive circuit, the switching circuit being connect with the LED drive circuit,
The voltage coupling circuit of the LED drive circuit and the switching circuit are connected, the voltage coupling circuit are used for from the LED
Coupled voltages are in driving circuit to control being switched on or off for the switching circuit.
2. LED power according to claim 1, which is characterized in that the switching circuit includes relay K1, the relay
The input terminal of device K1 connects the LED drive circuit, and the coil-end of the relay K1 connects the voltage coupling circuit.
3. LED power according to claim 2, which is characterized in that the LED drive circuit includes successively cascade connection
EMI circuit, rectification circuit, pfc circuit, pwm circuit and circuit of synchronous rectification, and the connection pfc circuit and PWM electricity
The reduction voltage circuit on road.
4. LED power according to claim 3, which is characterized in that the voltage coupling circuit connect the reduction voltage circuit.
5. LED power according to claim 4, which is characterized in that the voltage coupling circuit include resistance R4, the electricity
One end of resistance R4 connects the output end of the reduction voltage circuit, and the other end of the resistance R4 connects the coil of the relay K1
End.
6. LED power according to claim 3, which is characterized in that the voltage coupling circuit connect the synchronous rectification
Circuit.
7. LED power according to claim 6, which is characterized in that the voltage coupling circuit include resistance R4' and capacitor
One end of C1, the resistance R4' connect the output end of the circuit of synchronous rectification, described in the other end connection of the resistance R4'
The coil-end of relay K1 and the capacitor C1 are simultaneously grounded through the capacitor C1.
8. LED power according to claim 2, which is characterized in that the relay K1 is normally opened relay.
9. LED power according to claim 8, which is characterized in that the model T73 of the relay K1.
10. a kind of redundancy LED power, which is characterized in that including at least two LED as described in any one of claims 1-9
Power supply, at least two LED power are connected in parallel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821665140.0U CN209448928U (en) | 2018-10-15 | 2018-10-15 | A kind of LED power and redundancy LED power |
| PCT/CN2019/080244 WO2020077954A1 (en) | 2018-10-15 | 2019-03-28 | Led power supply and redundant led power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821665140.0U CN209448928U (en) | 2018-10-15 | 2018-10-15 | A kind of LED power and redundancy LED power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209448928U true CN209448928U (en) | 2019-09-27 |
Family
ID=68009649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821665140.0U Active CN209448928U (en) | 2018-10-15 | 2018-10-15 | A kind of LED power and redundancy LED power |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209448928U (en) |
| WO (1) | WO2020077954A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725846A (en) * | 2020-05-26 | 2021-11-30 | 北京广利核系统工程有限公司 | Direct-current redundant power supply system |
| US11476703B2 (en) * | 2021-02-26 | 2022-10-18 | Building Robotics, Inc. | Emergency lighting control bypass |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06267673A (en) * | 1993-03-15 | 1994-09-22 | Hitachi Lighting Ltd | Emergency lighting device |
| JPH07250439A (en) * | 1994-03-09 | 1995-09-26 | Dengiyoushiya Kikai Seisakusho:Kk | Power supply and power switch indicator |
| CN101790272B (en) * | 2010-03-02 | 2013-03-20 | 四川锦明光电股份有限公司 | LED light source driver with redundant fault tolerance |
| CN102076152A (en) * | 2011-01-21 | 2011-05-25 | 南京吉山光电科技有限公司 | Power-adjustable LED constant current source |
| CN103825296B (en) * | 2013-11-15 | 2016-07-27 | 国家电网公司 | A kind of grid-connected dual power supply of distributed power source distributes interface device |
| CN104979895A (en) * | 2015-07-23 | 2015-10-14 | 南京理工大学常熟研究院有限公司 | Intelligent digital dual-power switching system |
-
2018
- 2018-10-15 CN CN201821665140.0U patent/CN209448928U/en active Active
-
2019
- 2019-03-28 WO PCT/CN2019/080244 patent/WO2020077954A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2020077954A1 (en) | 2020-04-23 |
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