CN102348307A - LED street lamp and driving power supply circuit thereof - Google Patents
LED street lamp and driving power supply circuit thereof Download PDFInfo
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- CN102348307A CN102348307A CN2010102458162A CN201010245816A CN102348307A CN 102348307 A CN102348307 A CN 102348307A CN 2010102458162 A CN2010102458162 A CN 2010102458162A CN 201010245816 A CN201010245816 A CN 201010245816A CN 102348307 A CN102348307 A CN 102348307A
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- 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
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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Abstract
The invention is suitable for the LED lamp field and provides a LED street lamp and a driving power supply circuit thereof. In an embodiment of the invention, the driving power supply circuit of the LED lamp comprises: an AC/DC constant voltage driving unit and more than one DC/DC constant current driving units. The each DC/DC constant current driving unit corresponds with a LED load with one kind of power and is used to provide a direct current for the corresponding LED load. In this case, when the LED load of the LED lamp is replaced, the whole driving power supply circuit does not need to be replaced and the DC/DC constant current driving unit corresponding to the LED load is only needed to be configured. Therefore, displacement costs of the LED lamp can be substantially reduced.
Description
Technical field
The invention belongs to the LED field of light fittings, relate in particular to a kind of LED street lamp and driving power circuit thereof.
Background technology
Along with the LED arrival in illumination epoch, the LED street lamp will be used more and more widely, and the LED street lamp mainly comprises the driving power circuit of LED load and driving LED loaded work piece; Existing driving power circuit is an integrated circuit, to the LED load of different capacity, will dispose different driving power circuits for it; Like this; When displacement took place in the LED of LED street lamp load, driving power circuit integral body also will be replaced, and can increase the cost of LED street lamp so undoubtedly.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of driving power circuit of LED street lamp, is intended to solve existing LED street lamp and when displacement takes place, has the high problem of cost.
The embodiment of the invention is achieved in that a kind of driving power circuit of LED street lamp, is used to the LED load continuous current is provided, and said driving power circuit comprises:
Electric main is converted into the galvanic AC/DC constant voltage driving unit that the capable for LED load is used; And
The output of the said AC/DC constant voltage driving of input termination unit is exported the said LED load of termination, said direct current is separately converted to the galvanic more than one DC/DC constant current driving unit of the LED load use that can supply different capacity.
Another purpose of the embodiment of the invention is to provide a kind of LED street lamp that comprises above-mentioned driving power circuit.
In embodiments of the present invention; The driving power circuit of LED street lamp comprises AC/DC constant voltage driving unit and more than one DC/DC constant current driving unit; The LED load of the corresponding a kind of power of each DC/DC constant current driving unit is for providing direct current with its corresponding LED load, like this; When displacement takes place in the LED of LED street lamp load; Driving power circuit integral body need not be replaced, and only needs configuration and the corresponding DC/DC constant current driving unit of LED load to get final product, and greatly reduces the displacement cost of LED street lamp.
Description of drawings
Fig. 1 is the structure chart of the driving power circuit of the LED street lamp that provides of the embodiment of the invention;
Fig. 2 is the exemplary circuit figure of the driving power circuit of the LED street lamp that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of LED street lamp, and the LED street lamp comprises driving power circuit, and Fig. 1 shows the structure of the driving power circuit of the LED street lamp that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
The driving power circuit of LED street lamp is used to the LED load continuous current is provided, and driving power circuit comprises AC/DC constant voltage driving unit 100 and more than one DC/DC constant current driving unit;
AC/DC constant voltage driving unit 100 is converted into the direct current that the capable for LED load is used with electric main;
The output of the input termination AC/DC constant voltage driving unit 100 of DC/DC constant current driving unit is exported termination LED load, direct current is separately converted to the direct current of the LED load use that can supply different capacity.
Illustrate below; The driving power circuit of LED street lamp comprises a DC/DC constant current driving unit 201 and the 2nd DC/DC constant current driving unit 202; Certain needs according to the LED load; Can also comprise a plurality of DC/DC constant current driving unit; The one LED load 301 is different with the power of the 2nd LED load 302, and a DC/DC constant current driving unit 201 and the 2nd DC/DC constant current driving unit 202 are separately converted to direct current the direct current that can supply a LED load 301 and the 2nd LED load 302 to use.
Fig. 2 shows the exemplary circuit structure of the driving power circuit of the LED street lamp that the embodiment of the invention provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, AC/DC constant voltage driving unit 100 comprises:
The first input end of electromagnetic interference circuit 101 and second input connect power input respectively; First output of electromagnetic interference circuit 101 and second output connect the first input end and second input of first rectification circuit 102, second output head grounding of first rectification circuit 102 respectively;
First output of input termination first rectification circuit 102 of low pressure high-frequency ac power conversion circuit 103, the direct current that first rectification circuit 102 is exported converts the low pressure high-frequency alternating current to;
The output of the input termination low pressure high-frequency ac power conversion circuit 103 of second rectification circuit 104, the low pressure high-frequency ac electric rectification that low pressure high-frequency ac power conversion circuit 103 is exported is a high-frequency DC;
The output of input termination second rectification circuit 104 of LC filter circuit 105, the output of LC filter circuit 105 are the output of AC/DC constant voltage driving unit 100.
As one embodiment of the invention, low pressure high-frequency ac power conversion circuit 103 comprises:
PFC hold concurrently PWM high frequency transformer T1, switching tube 1031, PFC hold concurrently pwm control circuit 1032 and divider resistance R1;
Hold concurrently elementary winding first end of PWM high frequency transformer T1 of PFC is the input of low pressure high-frequency ac power conversion circuit 103; First end of the elementary winding second termination switching tube 1031 that PFC holds concurrently PWM high frequency transformer T1; Second end of switching tube 1031 is through divider resistance R1 ground connection; The control termination PFC of switching tube 1031 pwm control circuit 1032 of holding concurrently; Hold concurrently secondary winding first end of PWM high frequency transformer T1 of PFC is the output of low pressure high-frequency ac power conversion circuit 103, the secondary winding second end ground connection that PFC holds concurrently PWM high frequency transformer T1.
As one embodiment of the invention, switching tube 1031 is metal-oxide-semiconductor Q1, and the drain electrode of metal-oxide-semiconductor Q1 is first end of switching tube 1031, and the grid of metal-oxide-semiconductor Q1 is the control end of switching tube 1031, and the source electrode of metal-oxide-semiconductor Q1 is second end of switching tube 1031.
As one embodiment of the invention, second rectification circuit 104 is high-frequency rectification diode D1, and the anode of high-frequency rectification diode D1 is the input of second rectification circuit 104, and the negative electrode of high-frequency rectification diode D1 is the output of second rectification circuit 104.
As one embodiment of the invention, LC filter circuit 105 comprises:
First end of inductance L 1 is the input of LC filter circuit 105, and second end of inductance L 1 is the output of LC filter circuit 105 and first end that connects metal film capacitor C 1, the second end ground connection of metal film capacitor C 1.
The structure of each DC/DC constant current driving unit is identical, and existing is the example explanation with a DC/DC constant current driving unit 201,
As one embodiment of the invention, a DC/DC constant current driving unit 201 comprises:
DC/DC constant-current driven module 2011 and output filtration module 2012;
The first input end of DC/DC constant-current driven module 2011 and second input connect the output and ground end of AC/DC constant voltage driving unit 100 respectively; First output of DC/DC constant-current driven module 2011 and second output connect the first input end and second input of output filtration module 2012 respectively, first output of output filtration module 2012 and positive pole and the negative pole that second output connects a LED load 301 respectively.
As one embodiment of the invention, output filtration module 2012 comprises:
Inductance L 2 and capacitor C 2;
First end of capacitor C 2 connects first output of DC/DC constant-current driven module 2011 and the positive pole of a LED load 301 respectively; Second end of capacitor C 2 connects first end of inductance L 2 and the negative pole of a LED load 301 respectively, second output of the second termination DC/DC constant-current driven module 2011 of inductance L 2.
The one DC/DC constant current driving unit 201 also comprises first output that is attempted by DC/DC constant-current driven module 2011 and the diode D2 between second output, and a DC/DC constant current driving unit 201 also comprises first output that is attempted by output filtration module 2012 and the resistance R 2 between second output.
The driving power circuit of LED street lamp can also comprise a plurality of DC/DC constant current driving unit according to the needs of LED load, like the 2nd DC/DC constant current driving unit 202, because the structure of DC/DC constant current driving unit is the same, therefore repeats no more here.
In embodiments of the present invention; The driving power circuit of LED street lamp comprises AC/DC constant voltage driving unit and more than one DC/DC constant current driving unit; The LED load of the corresponding a kind of power of each DC/DC constant current driving unit is for providing direct current with its corresponding LED load, like this; When displacement takes place in the LED of LED street lamp load; Driving power circuit integral body need not be replaced, and only needs configuration and the corresponding DC/DC constant current driving unit of LED load to get final product, and greatly reduces the displacement cost of LED street lamp.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the driving power circuit of a LED street lamp is used to the LED load continuous current is provided, and it is characterized in that said driving power circuit comprises:
Electric main is converted into the galvanic AC/DC constant voltage driving unit that the capable for LED load is used; And
The output of the said AC/DC constant voltage driving of input termination unit is exported the said LED load of termination, said direct current is separately converted to the galvanic more than one DC/DC constant current driving unit of the LED load use that can supply different capacity.
2. the driving power circuit of LED street lamp as claimed in claim 1 is characterized in that, said AC/DC constant voltage driving unit comprises:
Electromagnetic interference circuit, first rectification circuit, low pressure high-frequency ac power conversion circuit, second rectification circuit and LC filter circuit;
The first input end of said electromagnetic interference circuit and second input connect power input respectively; First output of said electromagnetic interference circuit and second output connect the first input end and second input of first rectification circuit, second output head grounding of said first rectification circuit respectively;
First output of said first rectification circuit of input termination of said low pressure high-frequency ac power conversion circuit, the direct current that said first rectification circuit is exported converts the low pressure high-frequency alternating current to;
The output of the said low pressure high-frequency ac of the input termination power conversion circuit of said second rectification circuit, the low pressure high-frequency ac electric rectification that said low pressure high-frequency ac power conversion circuit is exported is a high-frequency DC;
The output of said second rectification circuit of input termination of said LC filter circuit, the output of said LC filter circuit is the output of AC/DC constant voltage driving unit.
3. the driving power circuit of LED street lamp as claimed in claim 2 is characterized in that, said low pressure high-frequency ac power conversion circuit comprises:
PFC hold concurrently PWM high frequency transformer T1, switching tube, PFC hold concurrently pwm control circuit and divider resistance R1;
Hold concurrently elementary winding first end of PWM high frequency transformer T1 of said PFC is the input of said low pressure high-frequency ac power conversion circuit; First end of the said switching tube of elementary winding second termination that said PFC holds concurrently PWM high frequency transformer T1; Second end of said switching tube is through divider resistance R1 ground connection; Said control end of switching tube connects the said PFC pwm control circuit of holding concurrently; Hold concurrently secondary winding first end of PWM high frequency transformer T1 of said PFC is the output of said low pressure high-frequency ac power conversion circuit, the secondary winding second end ground connection that said PFC holds concurrently PWM high frequency transformer T1.
4. the driving power circuit of LED street lamp as claimed in claim 3; It is characterized in that said switching tube is a metal-oxide-semiconductor, the drain electrode of said metal-oxide-semiconductor is first end of switching tube; The grid of said metal-oxide-semiconductor is a control end of switching tube, and the source electrode of said metal-oxide-semiconductor is second end of switching tube.
5. the driving power circuit of LED street lamp as claimed in claim 2; It is characterized in that; Said second rectification circuit is high-frequency rectification diode D1; The anode of said high-frequency rectification diode D1 is the input of second rectification circuit, and the negative electrode of said high-frequency rectification diode D1 is the output of second rectification circuit.
6. the driving power circuit of LED street lamp as claimed in claim 2 is characterized in that, said LC filter circuit comprises:
Inductance L 1 and metal film capacitor C 1;
First end of said inductance L 1 is the input of LC filter circuit, and second end of said inductance L 1 is the output of LC filter circuit and first end that connects metal film capacitor C 1, the second end ground connection of said metal film capacitor C 1.
7. the driving power circuit of LED street lamp as claimed in claim 1 is characterized in that, said DC/DC constant current driving unit comprises:
DC/DC constant-current driven module and output filtration module;
The first input end of said DC/DC constant-current driven module and second input connect the output and ground end of said AC/DC constant voltage driving unit respectively; First output of said DC/DC constant-current driven module and second output connect the first input end and second input of said output filtration module respectively, and first output of said output filtration module and second output connect the positive pole and the negative pole of said LED load respectively.
8. the driving power circuit of LED street lamp as claimed in claim 7 is characterized in that, said output filtration module comprises:
Inductance L 2 and capacitor C 2;
First end of said capacitor C 2 connects first output of said DC/DC constant-current driven module and the positive pole of said LED load respectively; Second end of said capacitor C 2 connects first end of said inductance L 2 and the negative pole of said LED load respectively, second output of the said DC/DC constant-current driven module of second termination of said inductance L 2.
9. a LED street lamp is characterized in that, said LED street lamp comprises each described driving power circuit like claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010245816.2A CN102348307B (en) | 2010-07-30 | 2010-07-30 | LED street lamp and driving power supply circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010245816.2A CN102348307B (en) | 2010-07-30 | 2010-07-30 | LED street lamp and driving power supply circuit thereof |
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| CN102348307A true CN102348307A (en) | 2012-02-08 |
| CN102348307B CN102348307B (en) | 2014-04-09 |
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| CN201010245816.2A Expired - Fee Related CN102348307B (en) | 2010-07-30 | 2010-07-30 | LED street lamp and driving power supply circuit thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103369797A (en) * | 2013-07-25 | 2013-10-23 | 华南理工大学 | Light adjustment device and method of LED (Light Emitting Diode) high-voltage direct current centralized power supply system |
| CN103687216A (en) * | 2013-11-29 | 2014-03-26 | 广西玖典电子新材料有限公司 | High-brightness LED lamp |
| CN104302070A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN105025631A (en) * | 2015-07-28 | 2015-11-04 | 无锡畅欧光电科技有限公司 | Passive intelligent induction LED control device |
| CN106707903A (en) * | 2017-03-16 | 2017-05-24 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller for high-voltage circuit breaker |
| CN106993354A (en) * | 2017-03-31 | 2017-07-28 | 苏州市霜地节能科技有限公司 | Capacitance decompression inductance anti-surge circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103369797A (en) * | 2013-07-25 | 2013-10-23 | 华南理工大学 | Light adjustment device and method of LED (Light Emitting Diode) high-voltage direct current centralized power supply system |
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| CN103687216A (en) * | 2013-11-29 | 2014-03-26 | 广西玖典电子新材料有限公司 | High-brightness LED lamp |
| CN104302070A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit |
| CN105025631A (en) * | 2015-07-28 | 2015-11-04 | 无锡畅欧光电科技有限公司 | Passive intelligent induction LED control device |
| CN106707903A (en) * | 2017-03-16 | 2017-05-24 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller for high-voltage circuit breaker |
| CN106707903B (en) * | 2017-03-16 | 2023-05-16 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller of high-voltage circuit breaker |
| CN106993354A (en) * | 2017-03-31 | 2017-07-28 | 苏州市霜地节能科技有限公司 | Capacitance decompression inductance anti-surge circuit |
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