CN201805592U - LED street lamp and drive power supply circuit thereof - Google Patents
LED street lamp and drive power supply circuit thereof Download PDFInfo
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- CN201805592U CN201805592U CN2010202818549U CN201020281854U CN201805592U CN 201805592 U CN201805592 U CN 201805592U CN 2010202818549 U CN2010202818549 U CN 2010202818549U CN 201020281854 U CN201020281854 U CN 201020281854U CN 201805592 U CN201805592 U CN 201805592U
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- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000012467 final product Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model applies to the field of LED lamps, and provides an LED street lamp and a drive power supply circuit thereof, the drive power supply circuit of the LED street lamp comprises an AC/DC constant-voltage drive unit and more than one DC/DC constant-current drive unit, and each DC/DC constant-current drive unit corresponds to an LED load with a relevant power so as to provide direct currents for the LED load. Therefore, in case of the need to replace a LED load of the LED street lamp, all that is needed is to replace the DC/DC constant-current drive unit corresponding to the LED load, thereby avoiding the need to replace the entire drive power supply circuit and greatly lowering the replacement cost of the LED street lamp.
Description
Technical field
The utility model belongs to the LED field of light fittings, relates 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, 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, at 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.
The utility model content
The purpose of this utility model is to provide a kind of driving power circuit of LED street lamp, is intended to solve existing LED street lamp and has the high problem of cost when displacement takes place.
The utility model is achieved in that a kind of driving power circuit of LED street lamp, is used to the LED load that continuous current is provided, and described 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 input termination described AC/DC constant voltage driving unit, the described LED load of output termination, described direct current is separately converted to can be for the galvanic more than one DC/DC constant current driving unit of the LED load use of different capacity.
In the said structure, described 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 described electromagnetic interference circuit and second input connect power input respectively, first output of described electromagnetic interference circuit and second output connect the first input end and second input of first rectification circuit, second output head grounding of described first rectification circuit respectively;
First output of described first rectification circuit of input termination of described low pressure high-frequency ac power conversion circuit;
The output of the described low pressure high-frequency ac of the input termination power conversion circuit of described second rectification circuit;
The output of described second rectification circuit of input termination of described LC filter circuit, the output of described LC filter circuit is the output of AC/DC constant voltage driving unit.
In the said structure, it is characterized in that described 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 described PFC is the input of described low pressure high-frequency ac power conversion circuit, first end of the described switching tube of elementary winding second termination that described PFC holds concurrently PWM high frequency transformer T1, second end of described switching tube is by divider resistance R1 ground connection, described control end of switching tube connects the described PFC pwm control circuit of holding concurrently, hold concurrently secondary winding first end of PWM high frequency transformer T1 of described PFC is the output of described low pressure high-frequency ac power conversion circuit, the secondary winding second end ground connection that described PFC holds concurrently PWM high frequency transformer T1.
In the said structure, described switching tube is a metal-oxide-semiconductor, and the drain electrode of described metal-oxide-semiconductor is first end of switching tube, and the grid of described metal-oxide-semiconductor is a control end of switching tube, and the source electrode of described metal-oxide-semiconductor is second end of switching tube.
In the said structure, described second rectification circuit is high-frequency rectification diode D1, and the anode of described high-frequency rectification diode D1 is the input of second rectification circuit, and the negative electrode of described high-frequency rectification diode D1 is the output of second rectification circuit.
In the said structure, described LC filter circuit comprises:
Inductance L 1 and metal film capacitor C 1;
First end of described inductance L 1 is the input of LC filter circuit, and second end of described 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 described metal film capacitor C 1.
In the said structure, described DC/DC constant current driving unit comprises:
DC/DC constant-current driven module and output filtration module;
The first input end of described DC/DC constant-current driven module and second input connect the output and the ground end of described AC/DC constant voltage driving unit respectively, first output of described DC/DC constant-current driven module and second output connect the first input end and second input of described output filtration module respectively, and first output of described output filtration module and second output connect the positive pole and the negative pole of described LED load respectively.
In the said structure, described output filtration module comprises:
Inductance L 2 and capacitor C 2;
First end of described capacitor C 2 connects first output of described DC/DC constant-current driven module and the positive pole of described LED load respectively, second end of described capacitor C 2 connects first end of described inductance L 2 and the negative pole of described LED load respectively, second output of the described DC/DC constant-current driven module of second termination of described inductance L 2.
Another purpose of the present utility model is to provide a kind of LED street lamp that comprises above-mentioned driving power circuit.
In the utility model, 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, 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, only need configuration and the corresponding DC/DC constant current driving unit of LED load to get final product, greatly reduce 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 utility model embodiment;
Fig. 2 is the exemplary circuit figure of the driving power circuit of the LED street lamp that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model embodiment provides a kind of LED street lamp, the LED street lamp comprises driving power circuit, Fig. 1 shows the structure of the driving power circuit of the LED street lamp that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
The driving power circuit of LED street lamp is used to the LED load that 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, output termination LED load, direct current is separately converted to can be for the direct current of the LED load use of 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 can be for the direct current of a LED load 301 and the 2nd LED load 302 uses.
Fig. 2 shows the exemplary circuit structure of the driving power circuit of the LED street lamp that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
As the utility model one embodiment, AC/DC constant voltage driving unit 100 comprises:
Electromagnetic interference circuit 101, first rectification circuit 102, low pressure high-frequency ac power conversion circuit 103, second rectification circuit 104 and LC filter circuit 105;
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 the utility model one embodiment, 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 by 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 the utility model one embodiment, 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 the utility model one embodiment, 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 the utility model one embodiment, LC filter circuit 105 comprises:
Inductance L 1 and metal film capacitor C 1;
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 the utility model one embodiment, 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 the 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 the utility model one embodiment, 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, as 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 the utility model embodiment, 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, 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, only need configuration and the corresponding DC/DC constant current driving unit of LED load to get final product, greatly reduce the displacement cost of LED street lamp.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. the driving power circuit of a LED street lamp is used to the LED load that continuous current is provided, and it is characterized in that described 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 input termination described AC/DC constant voltage driving unit, the described LED load of output termination, described direct current is separately converted to can be for the galvanic more than one DC/DC constant current driving unit of the LED load use of different capacity.
2. the driving power circuit of LED street lamp as claimed in claim 1 is characterized in that, described 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 described electromagnetic interference circuit and second input connect power input respectively, first output of described electromagnetic interference circuit and second output connect the first input end and second input of first rectification circuit, second output head grounding of described first rectification circuit respectively;
First output of described first rectification circuit of input termination of described low pressure high-frequency ac power conversion circuit;
The output of the described low pressure high-frequency ac of the input termination power conversion circuit of described second rectification circuit;
The output of described second rectification circuit of input termination of described LC filter circuit, the output of described 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, described 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 described PFC is the input of described low pressure high-frequency ac power conversion circuit, first end of the described switching tube of elementary winding second termination that described PFC holds concurrently PWM high frequency transformer T1, second end of described switching tube is by divider resistance R1 ground connection, described control end of switching tube connects the described PFC pwm control circuit of holding concurrently, hold concurrently secondary winding first end of PWM high frequency transformer T1 of described PFC is the output of described low pressure high-frequency ac power conversion circuit, the secondary winding second end ground connection that described 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 described switching tube is a metal-oxide-semiconductor, the drain electrode of described metal-oxide-semiconductor is first end of switching tube, the grid of described metal-oxide-semiconductor is a control end of switching tube, and the source electrode of described 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, described second rectification circuit is high-frequency rectification diode D1, the anode of described high-frequency rectification diode D1 is the input of second rectification circuit, and the negative electrode of described 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, described LC filter circuit comprises:
Inductance L 1 and metal film capacitor C 1;
First end of described inductance L 1 is the input of LC filter circuit, and second end of described 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 described metal film capacitor C 1.
7. the driving power circuit of LED street lamp as claimed in claim 1 is characterized in that, described DC/DC constant current driving unit comprises:
DC/DC constant-current driven module and output filtration module;
The first input end of described DC/DC constant-current driven module and second input connect the output and the ground end of described AC/DC constant voltage driving unit respectively, first output of described DC/DC constant-current driven module and second output connect respectively the first input end and second input of speed output filtration module, first output of described output filtration module and second output connect the positive pole and the negative pole of described LED load respectively.
8. the driving power circuit of LED street lamp as claimed in claim 7 is characterized in that, described output filtration module comprises:
Inductance L 2 and capacitor C 2;
First end of described capacitor C 2 connects first output of described DC/DC constant-current driven module and the positive pole of described LED load respectively, second end of described capacitor C 2 connects first end of described inductance L 2 and the negative pole of described LED load respectively, second output of the described DC/DC constant-current driven module of second termination of described inductance L 2.
9. a LED street lamp is characterized in that, described LED street lamp comprises each described driving power circuit as claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202818549U CN201805592U (en) | 2010-07-30 | 2010-07-30 | LED street lamp and drive power supply circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202818549U CN201805592U (en) | 2010-07-30 | 2010-07-30 | LED street lamp and drive power supply circuit thereof |
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| CN201805592U true CN201805592U (en) | 2011-04-20 |
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| CN2010202818549U Expired - Fee Related CN201805592U (en) | 2010-07-30 | 2010-07-30 | LED street lamp and drive power supply circuit thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN104302071A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | High-voltage direct-drive LED (light-emitting diode) illumination system |
| CN104320891A (en) * | 2014-11-11 | 2015-01-28 | 杭州华普永明光电股份有限公司 | Direct drive LED lighting system controlled by integrated control circuit |
-
2010
- 2010-07-30 CN CN2010202818549U patent/CN201805592U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN102348307B (en) * | 2010-07-30 | 2014-04-09 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN104302071A (en) * | 2014-11-11 | 2015-01-21 | 杭州华普永明光电股份有限公司 | High-voltage direct-drive LED (light-emitting diode) illumination system |
| CN104320891A (en) * | 2014-11-11 | 2015-01-28 | 杭州华普永明光电股份有限公司 | Direct drive LED lighting system controlled by integrated control circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20150730 |
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| EXPY | Termination of patent right or utility model |