CN201947497U - Constant-current driving device for LED street lamp - Google Patents
Constant-current driving device for LED street lamp Download PDFInfo
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- CN201947497U CN201947497U CN 201020634971 CN201020634971U CN201947497U CN 201947497 U CN201947497 U CN 201947497U CN 201020634971 CN201020634971 CN 201020634971 CN 201020634971 U CN201020634971 U CN 201020634971U CN 201947497 U CN201947497 U CN 201947497U
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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 utility model discloses a constant-current driving device for an LED street lamp, which mainly adopts a stabilized-voltage switch module and a constant-current driving module to provide constant working current for an LED array, wherein the stabilized-voltage switch module is composed of a PFC (power factor correction) circuit, and the constant-current driving module is composed of at least one isolation or non-isolation DC/DC constant-current driving circuit. Because the stabilized-voltage switch module adopts the PFC circuit, the conversion efficiency and the power factor can be improved, and in addition, the large electrolytic-capacitance ripple current in the PFC circuit can be reduced, and the service life of the PFC circuit can be prolonged. Because the constant-current driving module adopts the low-power isolation or non-isolation DC/DC constant-current driving circuit specially used for an LED driving chip, and the number of the isolation or non-isolation DC/DC constant-current driving circuit needs to be increased according to the illumination of the street lamp, the modularization can be formed, the cost can be reduced, and the universality can be improved. The isolation constant-current driving circuit comprises over-voltage, under-voltage, over-power, short-circuit or over-temperature protection circuits, and the reliability of the isolation constant-current drive circuit can be improved.
Description
Technical field
The utility model relates to the Drive and Control Circuit technical field, particularly a kind of control device that is used for LED street lamp constant-current drive circuit.
Background technology
Because LED optical efficiency height, energy-conserving and environment-protective, thereby be widely used in street lighting, but usually street lamp since the installation site than higher, and require the area of irradiation to have bigger, therefore as the LED of road-light light-source also normally by tens even up to a hundred the matrixes that great power LED is formed, this LED matrix is made of the LED parallel connection of a plurality of series connection.
Existing LED streetlight control circuit adopts high frequency switch power and constant-current drive circuit, and high frequency switch power and constant-current drive circuit be independent circuits, by common voltage-stabilizing switch power source output constant voltage; Constant-current drive circuit is the constant-flow driver that utilizes the special LED chip for driving to be designed to.These two parts lack wherein any one, and the LED street lamp is lighted.This technology has the following disadvantages: (1) since Switching Power Supply and constant-flow driver separately, power supply needs common power supply manufacturers design by specialty in the reality, and driver LED light fixture manufacturers design often, thereby the matching problem of power supply and constant-flow driver appears easily; (2) since special-purpose LED chip for driving operating frequency usually than higher, the hundreds of KHz is to more than 1 megahertz, the switching tube poor reliability, switching loss is big, efficient is low; (3) because the efficient of driver is low, and in order to reduce the distance of driver and led array, usually make the as close as possible led array of driver, driver can cause its working temperature height because of the heating of led array during work, thereby the aluminium base that need to adopt heat conduction is as the LED drive plate, its cost height.
The utility model content
The technical problem that the utility model mainly solves provides the LED street lamp constant current driving device of a kind of low cost, high efficiency, high reliability.
In order to address the above problem, the utility model provides a kind of LED street lamp constant current driving device, this LED street lamp constant current driving device comprises stabilized switch module and the constant-current driven module that is connected with this stabilized switch module, wherein, described stabilized switch module comprises pfc circuit and the isolated converter that is connected with this pfc circuit output, described constant-current driven module comprises non-isolation DC-DC constant-current drive circuit that the output of at least one and described isolated converter is connected, this at least one non-isolation DC-DC constant-current drive circuit and a LED or be connected by the led array that the LED of at least two series connection forms.
Preferably, described stabilized switch module also comprises EMI circuit and the rectification circuit that is connected with the pfc circuit input.
Preferably, described at least one non-isolation DC-DC constant-current drive circuit comprises protective circuit.
Preferably, described protective circuit comprises overvoltage, under-voltage, overpower, short circuit, thermal-shutdown circuit.
Preferably, described isolated converter comprises isolating transformer.
The utility model also provides another kind of LED street lamp constant current driving device, it comprises stabilized switch module and the constant-current driven module that is connected with this stabilized switch module, described stabilized switch module comprises the interleaved PFC circuit, described constant-current driven module comprises the isolation DC-DC constant-current drive circuit that the output of at least one and described interleaved PFC circuit is connected, and this is at least one isolates DC-DC constant-current drive circuit and a LED or be connected by the led array that the LED of at least two series connection forms.
Preferably, described stabilized switch module also comprises EMI and the rectification circuit that is connected with the interleaved PFC circuit output end.
Preferably, described at least one isolation DC-DC constant-current drive circuit comprises protective circuit.
Preferably, described protective circuit comprises overvoltage, under-voltage, overpower, short circuit, thermal-shutdown circuit.
The utility model LED street lamp constant current driving device, the stabilized switch module of this constant current driving device by mainly constituting by pfc circuit, and the constant-current driven module that is made of at least one isolation or non-isolation DC/DC constant-current drive circuit provides constant operating current to led array.Because the stabilized switch module adopts described pfc circuit, can improve conversion efficiency and power factor; Reduce the big electrochemical capacitor ripple current in the circuit simultaneously, increase the service life.Described constant-current driven module adopts the small-power DC/DC constant-current drive circuit that is exclusively used in the LED chip for driving, increases non-isolation or isolates the DC/DC constant-current drive circuit according to the street lighting needs, can form modularization, reduces cost, and improves its versatility; Described isolation constant-current drive circuit comprises protective circuits such as overvoltage, under-voltage, overpower, short circuit, excess temperature, can improve the reliability of constant-current drive circuit.
Described led array adopts the type of drive of series and parallel, makes it can be conveniently increase or reduce constant flow module according to the situation of actual LED lamp parallel connection.
Description of drawings
Fig. 1 is the utility model LED street lamp constant current driving device embodiment theory diagram.
Fig. 2 is another embodiment theory diagram of the utility model LED street lamp constant current driving device.
Below in conjunction with embodiment, and with reference to accompanying drawing, realization, functional characteristics and the advantage of the utility model purpose is described further.
Embodiment
As shown in Figure 1, the utility model provides a kind of LED street lamp constant current driving device embodiment.
This LED street lamp constant current driving device comprises: stabilized switch module 1 and the constant-current driven module 2 that is connected with this stabilized switch module 1 output, wherein, described stabilized switch module 1 comprises pfc circuit 11 and the isolated converter 12 that is connected with these pfc circuit 11 outputs, described constant-current driven module 2 comprises non-isolation DC-DC constant-current drive circuit 21 that 12 outputs of at least one and described isolated converter are connected, this at least one non-isolation DC-DC constant-current drive circuit 21 and a LED or be connected by the led array 3 that the LED of at least two series connection forms.Described stabilized switch module 1 also comprises EMI and the rectification circuit 10 that is connected with pfc circuit 11 inputs.
The quantity of described at least one non-isolation DC-DC constant-current drive circuit 21 can be provided with according to the quantity of led array 3; as being provided with one, two or more; this at least one non-isolation DC-DC constant-current drive circuit 21 comprises protective circuit, and this protective circuit comprises protective circuits such as adopting existing overvoltage, under-voltage, overpower, short circuit, excess temperature.
During work, described stabilized switch module 1 inserts 90V-250V voltage, by described rectification circuit the alternating current of importing is carried out rectification, by described EMI (Electro Magnetic Interference, electromagnetic interference) circuit filtering interference signals prevents from that high frequency that power switching module forms from disturbing to scurry.Handle by described pfc circuit 11 again, and the output high-voltage dc signal.12 pairs of pfc circuits of described isolated converter, 11 output high-voltage dc signals carry out isolated variable and handle the output low-voltage signal.Described isolated converter 12 can adopt isolating transformer.
At least one non-isolation DC/DC constant-current drive circuit 21 on the described constant-current driven module 2 is handled back output can control described led array constant current.
The utility model LED street lamp constant current driving device, the stabilized switch module 1 of this constant current driving device by mainly constituting by pfc circuit 11, and provide constant operating current by 2 pairs of led array 3 of constant-current driven module that at least one non-isolation DC/DC constant-current drive circuit 21 constitutes.Because stabilized switch module 1 adopts described pfc circuit 11, can improve conversion efficiency and power factor; Reduce the big electrochemical capacitor ripple current in the circuit simultaneously, increase the service life.Described constant-current driven module 2 adopts the small-power non-isolation DC/DC constant-current drive circuit 21 that is exclusively used in the LED chip for driving, increases non-isolation DC/DC constant-current drive circuit according to the street lighting needs, can form modularization, reduces cost, and improves its versatility; Described non-isolation DC/DC constant-current drive circuit 21 comprises protective circuits such as overvoltage, under-voltage, overpower, short circuit, excess temperature, can improve the reliability of constant-current drive circuit.
Described led array 3 adopts the type of drive of series and parallels, makes it can be conveniently increase or reduce constant flow module according to the situation of actual LED lamp parallel connection.
As shown in Figure 2, the utility model provides another kind of LED street lamp constant current driving device embodiment.
Described LED street lamp constant current driving device comprises: stabilized switch module 1 and the constant-current driven module 2 that is connected with this stabilized switch module 1 output, described stabilized switch module 1 comprises interleaved PFC circuit 13, described constant-current driven module bag 2 is drawn together the isolation DC-DC constant-current drive circuit 22 that 2 outputs of at least one and described interleaved PFC circuit are connected, and this is at least one isolates DC-DC constant-current drive circuit 22 and a LED or be connected by the led array 3 that the LED of at least two series connection forms.Described stabilized switch module 1 also comprises EMI and the rectification circuit 10 that is connected with pfc circuit 11 inputs.
The quantity of described at least one isolation DC-DC constant-current drive circuit 22 can be provided with according to the quantity of led array 3; as being provided with one, two or more; this at least one isolation DC-DC constant-current drive circuit 22 comprises protective circuit, and this protective circuit comprises overvoltage, under-voltage, overpower, short circuit, thermal-shutdown circuit.
During work, described stabilized switch module 1 inserts 90V-250V voltage, by described rectification circuit the alternating current of input is carried out rectification, by the various interference signals of described EMI circuit filtering, prevents from that high frequency that power switch circuit forms from disturbing to scurry.Handle the output high-voltage dc signal by described pfc circuit 11 again.22 pairs of pfc circuits of described isolation DC/DC constant-current drive circuit, 11 output high-voltage dc signals are handled, and output can be controlled the signal of described led array 3.
The utility model LED street lamp constant current driving device, the stabilized switch module of this constant current driving device by mainly constituting by pfc circuit, and the constant-current driven module that is made of at least one isolation DC/DC constant-current drive circuit provides constant operating current to led array.Because the stabilized switch module adopts described pfc circuit, can improve conversion efficiency and power factor; Reduce the big electrochemical capacitor ripple current in the circuit simultaneously, increase the service life.Described constant-current driven module adopts the small-power that is exclusively used in the LED chip for driving to isolate the DC/DC constant-current drive circuit, can form modularization, reduces cost, and increases the quantity of isolating the DC/DC constant-current drive circuit according to the street lighting needs, improves its versatility; Described isolation DC/DC constant-current drive circuit 22 comprises protective circuits such as overvoltage, under-voltage, overpower, short circuit, excess temperature, can improve the reliability of constant-current drive circuit.
Described led array adopts the type of drive of series and parallel, makes it can be conveniently increase or reduce constant flow module according to the situation of actual LED lamp parallel connection.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. LED street lamp constant current driving device, it comprises stabilized switch module and the constant-current driven module that is connected with this stabilized switch module output, it is characterized in that:
Described stabilized switch module comprises pfc circuit and the isolated converter that is connected with this pfc circuit output, described constant-current driven module comprises non-isolation DC-DC constant-current drive circuit that the output of at least one and described isolated converter is connected, this at least one non-isolation DC-DC constant-current drive circuit and a LED or be connected by the led array that the LED of at least two series connection forms.
2. according to the described LED street lamp of claim 1 constant current driving device, its spy is characterised in that:
Described stabilized switch module also comprises EMI circuit and the rectification circuit that is connected with the pfc circuit input.
3. according to the described LED street lamp of claim 1 constant current driving device, its spy is characterised in that:
Described at least one non-isolation DC-DC constant-current drive circuit comprises protective circuit.
4. according to the described LED street lamp of claim 3 constant current driving device, its spy is characterised in that:
Described protective circuit comprises overvoltage, under-voltage, overpower, short circuit, thermal-shutdown circuit.
5. according to the described LED street lamp of claim 1 constant current driving device, its spy is characterised in that:
Described isolated converter comprises isolating transformer.
6. LED street lamp constant current driving device, it comprises stabilized switch module and the constant-current driven module that is connected with this stabilized switch module, it is characterized in that:
Described stabilized switch module comprises the interleaved PFC circuit, described constant-current driven module comprises the isolation DC-DC constant-current drive circuit that the output of at least one and described interleaved PFC circuit is connected, and this is at least one isolates DC-DC constant-current drive circuit and a LED or be connected by the led array that the LED of at least two series connection forms.
7. according to the described LED street lamp of claim 6 constant current driving device, its spy is characterised in that:
Described stabilized switch module also comprises EMI and the rectification circuit that is connected with the interleaved PFC circuit output end.
8. according to the described LED street lamp of claim 6 constant current driving device, its spy is characterised in that:
Described at least one isolation DC-DC constant-current drive circuit comprises protective circuit.
9. described according to Claim 8 LED street lamp constant current driving device, its spy is characterised in that:
Described protective circuit comprises overvoltage, under-voltage, overpower, short circuit, thermal-shutdown circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020634971 CN201947497U (en) | 2010-11-30 | 2010-11-30 | Constant-current driving device for LED street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020634971 CN201947497U (en) | 2010-11-30 | 2010-11-30 | Constant-current driving device for LED street lamp |
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| Publication Number | Publication Date |
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| CN201947497U true CN201947497U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020634971 Expired - Fee Related CN201947497U (en) | 2010-11-30 | 2010-11-30 | Constant-current driving device for LED street lamp |
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| CN (1) | CN201947497U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391669A (en) * | 2013-07-02 | 2013-11-13 | 深圳桑达百利电器有限公司 | LED (light emitting diode) lamp lighting system |
| WO2014075326A1 (en) * | 2012-11-14 | 2014-05-22 | 深圳市华星光电技术有限公司 | Method for implementing led lamp strip current multiplication and corresponding drive circuit thereof |
| US9538593B2 (en) | 2012-11-14 | 2017-01-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for multiplying current of LED light bar and associated driving circuit thereof |
| CN113366920A (en) * | 2019-01-25 | 2021-09-07 | 昕诺飞控股有限公司 | Lighting driver and driving method |
-
2010
- 2010-11-30 CN CN 201020634971 patent/CN201947497U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014075326A1 (en) * | 2012-11-14 | 2014-05-22 | 深圳市华星光电技术有限公司 | Method for implementing led lamp strip current multiplication and corresponding drive circuit thereof |
| US9538593B2 (en) | 2012-11-14 | 2017-01-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for multiplying current of LED light bar and associated driving circuit thereof |
| CN103391669A (en) * | 2013-07-02 | 2013-11-13 | 深圳桑达百利电器有限公司 | LED (light emitting diode) lamp lighting system |
| CN113366920A (en) * | 2019-01-25 | 2021-09-07 | 昕诺飞控股有限公司 | Lighting driver and driving method |
| CN113366920B (en) * | 2019-01-25 | 2024-06-11 | 昕诺飞控股有限公司 | Lighting driver and driving method |
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| DD01 | Delivery of document by public notice |
Addressee: Wang Xuefeng Document name: Notification to Go Through Formalities of Registration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20121130 |