CN203884022U - Full bridge rectification circuit for driving LED and LED lighting equipment - Google Patents
Full bridge rectification circuit for driving LED and LED lighting equipment Download PDFInfo
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- CN203884022U CN203884022U CN201320884983.0U CN201320884983U CN203884022U CN 203884022 U CN203884022 U CN 203884022U CN 201320884983 U CN201320884983 U CN 201320884983U CN 203884022 U CN203884022 U CN 203884022U
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- diode
- rectifier
- full bridge
- electric capacity
- feeder ear
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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 relates to a full bridge rectification circuit for driving an LED. The full bridge rectification circuit is composed of a first rectification arm and a second rectification arm. Two cross connection branches are arranged between the first rectification arm and the second rectification arm in a cross connection manner. Each cross connection branch is connected with an input end of an alternating current power supply, and the other end of the cross connection branch is connected with the negative of a rectification diode of a corresponding rectification arm, so that each cross connection branch forms a complete loop between one rectification diode of the corresponding rectification arm and the alternating current power supply. Each cross connection branch is provided with a capacitive energy storage element. According to the full bridge rectification circuit, the capacitive energy storage elements can store electric energy in the charging period and can discharge the stored electric energy in the discharging period, so that conduction voltage of an LED load driven by the full bridge rectification circuit can be reached quickly.
Description
Technical field
The utility model relates to a kind of rectification circuit for driving LED, the driving arrangement for LED chip, LED luminaire and has the transport facility of this LED luminaire.
Background technology
Since alternating current occurs, the rectifier system of alternating current has just started development.Bridge rectifier is widely used in various circuit, is particularly used for alternating current (AC) to be rectified into direct current (DC).Be illustrated in figure 1 a kind of bridge rectifier of routine.This bridge rectifier comprises 4 diodes 101,102,103,104, and these 4 diodes become electric bridge to connect.Alternating current in the first input IN1 and the second input IN2 place input, by this bridge rectifier, is transformed to direct current at output OUT1 and OUT2 place.Conventionally can between output OUT1 and OUT2, connect electric capacity 105 in actual applications, to export galvanic current more, press.
Impact due to filter capacitor 105, after this circuit access load, power factor is lower, caused the waste of electric power resource, therefore in actual applications, often visible circuit as shown in Figure 2, accesses in the bridge rectifier rear end of Fig. 1 the valley fill type circuit of power factor correction being comprised of diode 206,207,208 and electric capacity 205,209.In the application of Switching Power Supply, this circuit can still increase by three diodes and two electrochemical capacitors by power factor correction to 0.8 left and right, and volume is increased, when application, if do step-down, use the voltage of its actual output to only have 1/2 of input voltage simultaneously.
Utility model content
In order to overcome existing LED drive circuit technology above shortcomings, an aspect of the present utility model provides a kind of full bridge rectifier for driving LED, described full bridge rectifier consists of the first rectifier arm and the second rectifier arm, it is characterized in that, between described the first rectifier arm and described the second rectifier arm, in cross-coupled mode, be provided with two interconnection branch roads, one end of each interconnection branch road connects respectively an input of communication power supply, and the other end is connected to respectively the negative pole of a rectifier diode of corresponding rectifier arm, thereby each interconnection branch road has formed a complete loops respectively between rectifier diode of corresponding rectifier arm and communication power supply, in these two interconnection branch roads, be respectively equipped with a capacitive energy-storage travelling wave tube.By this technical scheme of the present utility model, make described capacitive energy-storage travelling wave tube can be when charge cycle store electrical energy discharge stored electric energy when discharge cycle, to reach quickly the conducting voltage of the LED load being driven by described full bridge rectifier.
According to a preferred implementation, described full bridge rectifier has six rectifier diodes, three rectifier diode head and the tail the first rectifier arms in series in described six rectifier diodes, other three rectifier diodes head and the tail the second rectifier arm in series in described six rectifier diodes, thereby one of described two interconnection branch roads are respectively with being positioned at corresponding rectifier arm, middle rectifier diode and communication power supply forms a complete loops.
According to a preferred implementation, the first rectifier arm comprises: the first diode, the second diode and the 3rd diode, and wherein, the positive pole of the second diode connects the first feeder ear, and negative pole is connected with the positive pole of the first diode; The negative pole of the first diode is connected with the first output of described rectification circuit; The negative pole of the 3rd diode is connected with the first feeder ear, is anodally connected with the second output of described rectification circuit; And the second rectifier arm comprises: the 4th diode and the 5th diode and the 6th diode, and wherein, the positive pole of the 5th diode connects the second feeder ear, and negative pole is connected with the positive pole of the 4th diode; The negative pole of the 4th diode is connected with the first output of described rectification circuit; The positive pole of the 6th diode is connected with the second output of described rectification circuit, and negative pole is connected with the second feeder ear.
According to a preferred implementation, described capacitive energy-storage travelling wave tube is polarity free capacitor, in described full bridge rectifier, be provided with the first electric capacity, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, wherein, one end of described the first electric capacity is connected to the first feeder ear, and the other end of described the first electric capacity is connected to the positive pole of the 4th diode, thereby by the first feeder ear, the second feeder ear, the first electric capacity and the 5th diode have formed the first interconnection branch road, and one end of described the 3rd electric capacity is connected to the second feeder ear, and the other end of described the 3rd electric capacity connects the positive pole of the first diode, thereby by the first feeder ear, the second feeder ear, the 3rd electric capacity and the second diode have formed the second interconnection branch road.
According to a preferred implementation, described the 4th electric capacity connects according to one end the mode that the second output and the other end connect the second feeder ear and is connected in parallel to described the 6th diode, and described the second electric capacity connects according to one end the mode that the second output and the other end connect the first feeder ear and is connected in parallel to described the 3rd diode.
According to a preferred implementation, described six rectifier diodes are Schottky barrier diodes, reverse withstand voltage 2 times of being at least input ac voltage peak value of described rectifier diode, described polarity free capacitor is withstand voltage is at least 1.5 times of input AC electricity peak value, and the capacitance of described polarity free capacitor is 22nF～330nF.
According to a preferred implementation, described full bridge rectifier is connected with the filter circuit consisting of resistance and filter capacitor between its first and second output.
The utility model also provides a kind of driving arrangement for LED chip, it is characterized in that, described driving arrangement has front described full bridge rectifier.
According on the other hand, the utility model provides a kind of LED luminaire, it is characterized in that, described LED luminaire has front described full bridge rectifier.
According to more on the one hand, the utility model also provides a kind of transport facility, it is characterized in that, described transport facility has front described LED luminaire.
The beneficial effects of the utility model are:
Employing, with the bridge rectifier of power factor emendation function, makes the power factor of circuit be subject to the impact of output filter capacitor very little, can effectively improve power factor to 0.9 in practical application circuit more than.Compare with traditional rectification circuit, only increased the polarity free capacitor of two diodes and four low capacities, have advantages of that volume is little, performance good.Full bridge rectifier of the present utility model is applied in LED chip and LED luminaire, can effectively reduce the stroboscopic degree of depth, promotes lighting experience.Full bridge rectifier of the present utility model is applied in the middle of transport facility, can reach energy-conservation, reduces the effect of use cost.
Accompanying drawing explanation
Fig. 1 is conventional bridge rectification circuit schematic diagram;
Fig. 2 is the schematic diagram of conventional bridge rectification circuit access valley fill type circuit of power factor correction;
Fig. 3 is basic circuit schematic diagram of the present utility model;
Fig. 4 (a) is that the utility model circuit is at the capacitor charge and discharge key diagram of the positive half cycle of alternating current;
Fig. 4 (b) is that the utility model circuit is at the capacitor charge and discharge key diagram of alternating current negative half period;
Fig. 4 (c) is the basic circuit schematic diagram that the utility model improves power factor.
Embodiment
Below in conjunction with accompanying drawing explanation the utility model.Fig. 3 is basic circuit schematic diagram of the present utility model.According to Fig. 3, can find out, full bridge rectifier for driving LED of the present utility model has six rectifier diodes, three rectifier diode head and the tail the first rectifier arms in series in six rectifier diodes, other three rectifier diodes head and the tail the second rectifier arm in series in six rectifier diodes, at least one rectifier diode of the second rectifier arm and the first rectifier arm is parallel with energy-storage travelling wave tube.According to an embodiment of the present utility model, energy-storage travelling wave tube can be nonpolarity little electric capacity.During circuit working, four electric capacity alternately discharge and recharge, improved the utilance of each half period of alternating current, increased the current lead-through time in each ac period, make input current waveform approach input voltage waveform as far as possible, reduced current harmonics, thereby improved the stability of output voltage, and improved the power factor of circuit, can effectively improve power factor to 0.9 in practical application circuit more than.
As shown in Figure 3, for the first feeder ear IN1 to full bridge rectifier power supply, be arranged on the second diode 302 of the first rectifier arm and the connected node place between the 3rd diode 303, and be arranged on the 5th diode 305 of the second rectifier arm and the connected node place between the 6th diode 306 for the second feeder ear IN2 to full bridge rectifier power supply.Referring to Fig. 3, the first feeder ear IN1 is connected to diode 302 anodes, 303 negative terminals and electric capacity 307 one end, 308 one end; Diode 302 negative terminals are connected to diode 301 anodes and electric capacity 309 one end; Electric capacity 307 other ends connect diode 304 anodes and diode 305 negative terminals; The other end of diode 305 anodes connection electric capacity 309 and the second feeder ear IN2, the negative terminal of diode 306 are, one end of electric capacity 310; The negative terminal of diode 301,304 is connected with output OUT1; The other end of the anode of diode 303,306 and electric capacity 308,310 is connected and is connected with output OUT2.
As shown in Figure 3, conventionally can between output OUT1 and OUT2, connect electric capacity 311 in actual applications, electric capacity 311 can be to have polar capacitor or polarity free capacitor, if add larger filter capacitor in this rectifier bridge back, power factor is subject to the impact of output filter capacitor, can reach 0.85.
Below in conjunction with the figure that makes a practical application of a principle, the utility model operation principle is described.For convenience of description, in figure, diode all be take common rectifier diode and is explained as example.Load unit can be the load unit of character arbitrarily such as resistive, capacitive, perception.As Fig. 4 (a) and Fig. 4 (b) are depicted as the utility model figure that makes a practical application of a principle.
The working condition of the positive half cycle of alternating current is described referring to Fig. 4 (a).Now, electric current is got back to power line through power line, rectifier diode 402, rectifier diode 401, load, rectifier diode 406, forms loop and powers to the load.At voltage ascent stage, by rectifier diode 402, electric capacity 409, forming loop is electric capacity 409 chargings; By electric capacity 408, rectifier diode 406, forming loop is electric capacity 408 chargings simultaneously, and in charging process, electric capacity 408,409 is relation in parallel (loop as shown in solid arrow in Fig. 4 (a)) on circuit structure.Simultaneously, in electric capacity 407,410, the electric charge of storage discharges to LED module through rectifier diode 404, now electric capacity 407,410 is series relationship with alternating current source on circuit structure, has been equivalent to increase the voltage of alternating current source so that load can conducting (loop as shown in dotted arrow in Fig. 4 (a)).
The working condition of alternating current negative half period is described referring to Fig. 4 (b).Now, electric current is got back to power line through power line, rectifier diode 405, rectifier diode 404, load, rectifier diode 403, forms loop and powers to the load.At absolute value of voltage ascent stage, by rectifier diode 405, electric capacity 407, form loop to electric capacity 407 chargings; By electric capacity 410, rectifier diode 403, form loop to electric capacity 410 chargings, in charging process, electric capacity 407,410 is relation in parallel (loop as shown in solid arrow in Fig. 4 (b)) on circuit structure simultaneously.Simultaneously, in electric capacity 408,409, the electric charge of storage passes through rectifier diode 401 to load discharge, now electric capacity 408,409 is series relationship with alternating current source on circuit structure, is equivalent to increase alternating current source absolute value of voltage so that LED module can conducting (loop as shown in dotted arrow in Fig. 4 (b)).
Conventionally can increase filter capacitor in actual applications, as shown in filter capacitor in figure 411, to obtain galvanic current more, press, the power factor of traditional bridge rectifier can be subject to the impact of filter capacitor and become very low.Due to the effect of above-mentioned operation principle, the power factor of the technical scheme that the utility model provides is subject to the impact of this filter capacitor very little.
By above process, four alternately energy storage and electric discharges of electric capacity, increased the current lead-through time in each ac period, improved the utilance of each half period of alternating current, make input current waveform approach input voltage waveform as far as possible, reduced current harmonics, thereby improved the stability of output voltage, and improved the power factor of circuit, can effectively improve power factor to 0.9 in practical application circuit more than.
Full bridge rectifier of the present utility model is applied in LED chip and LED luminaire, according to above-mentioned operation principle, can play effective reduction stroboscopic degree of depth, promotes the effect of lighting experience.
Full bridge rectifier of the present utility model can also be applied in transport facility.Transport facility can comprise electric motor car, automobile, aircraft etc.These transport facilitys all need lighting apparatus to meet its lighting demand, can adopt LED light fixture.Transport facility adopts while having the LED light fixture of full bridge rectifier of the present utility model, can have energy savings, reduces the effect of use cost.
The utility model at least has the following advantages:
1, adopt the bridge rectifier with power factor emendation function, can effectively improve power factor to 0.9 in practical application circuit more than.
2, compare with traditional rectification circuit, only increased the polarity free capacitor of two diodes and four low capacities, have advantages of that volume is little, performance good.
3, full bridge rectifier of the present utility model is applied in LED chip and LED luminaire, can effectively reduce the stroboscopic degree of depth, promotes lighting experience.
4, full bridge rectifier of the present utility model is applied in the middle of transport facility, can reach energy-conservation, reduces the effect of use cost.
It should be noted that; above-mentioned specific embodiment is exemplary; under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection range of the present utility model.It will be understood by those skilled in the art that specific descriptions are above in order to explain the purpose of this utility model, not for limiting the utility model.Protection range of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. for a full bridge rectifier for driving LED, described full bridge rectifier consists of the first rectifier arm and the second rectifier arm, it is characterized in that,
Between described the first rectifier arm and described the second rectifier arm, in cross-coupled mode, be provided with two interconnection branch roads, one end of each interconnection branch road connects respectively an input of communication power supply, and the other end is connected to respectively the negative pole of a rectifier diode of corresponding rectifier arm, thereby each interconnection branch road has formed a complete loops respectively between rectifier diode of corresponding rectifier arm and communication power supply, in these two interconnection branch roads, is respectively equipped with a capacitive energy-storage travelling wave tube.
2. full bridge rectifier according to claim 1, it is characterized in that, described full bridge rectifier has six rectifier diodes, three rectifier diode head and the tail the first rectifier arms in series in described six rectifier diodes, other three rectifier diodes head and the tail the second rectifier arm in series in described six rectifier diodes, thereby one of described two interconnection branch roads are respectively with being positioned at corresponding rectifier arm, middle rectifier diode and communication power supply forms a complete loops.
3. full bridge rectifier according to claim 2, it is characterized in that, the first rectifier arm comprises: the first diode (301), the second diode (302) and the 3rd diode (303), wherein, the positive pole of the second diode (302) connects the first feeder ear (IN1), and negative pole is connected with the positive pole of the first diode (301); The negative pole of the first diode (301) is connected with first output (OUT1) of described rectification circuit; The negative pole of the 3rd diode (303) is connected with the first feeder ear (IN1), is anodally connected with second output (OUT2) of described rectification circuit; And
The second rectifier arm comprises: the 4th diode (304) and the 5th diode (305) and the 6th diode (306), wherein, the positive pole of the 5th diode (305) connects the second feeder ear (IN2), and negative pole is connected with the positive pole of the 4th diode (304); The negative pole of the 4th diode (304) is connected with first output (OUT1) of described rectification circuit; The positive pole of the 6th diode (306) is connected with second output (OUT2) of described rectification circuit, and negative pole is connected with the second feeder ear (IN2).
4. full bridge rectifier according to claim 3, it is characterized in that, described capacitive energy-storage travelling wave tube is polarity free capacitor, in described full bridge rectifier, be provided with the first electric capacity (307), the second electric capacity (308), the 3rd electric capacity (309) and the 4th electric capacity (310), wherein
One end of described the first electric capacity (307) is connected to the first feeder ear (IN1), and the other end of described the first electric capacity (307) is connected to the positive pole of the 4th diode (304), thereby by the first feeder ear (IN1), the second feeder ear (IN2), the first electric capacity (307) and the 5th diode (305), formed the first interconnection branch road, and
One end of described the 3rd electric capacity (309) is connected to the second feeder ear (IN2), and the other end of described the 3rd electric capacity (309) connects the positive pole of the first diode (301), thereby formed the second interconnection branch road by the first feeder ear (IN1), the second feeder ear (IN2), the 3rd electric capacity (309) and the second diode (302).
5. full bridge rectifier according to claim 4, it is characterized in that, described the 4th electric capacity (310) connects according to one end the mode that the second output (OUT2) and the other end connect the second feeder ear (IN2) and is connected in parallel to described the 6th diode (306), and described the second electric capacity (308) connects according to one end the mode that the second output (OUT2) and the other end connect the first feeder ear (IN1) and is connected in parallel to described the 3rd diode (303).
6. according to the full bridge rectifier one of claim 4 to 5 Suo Shu, it is characterized in that, described six rectifier diodes are Schottky barrier diodes, reverse withstand voltage 2 times of being at least input ac voltage peak value of described rectifier diode, described polarity free capacitor is withstand voltage is at least 1.5 times of input AC electricity peak value, and the capacitance of described polarity free capacitor is 22nF～330nF.
7. according to the full bridge rectifier one of claim 1 to 5 Suo Shu, it is characterized in that, described full bridge rectifier is connected with the filter circuit consisting of resistance and filter capacitor between its first and second output.
8. for a driving arrangement for LED chip, it is characterized in that, described driving arrangement has the rectification circuit as described in one of claim 1 to 6.
9. a LED luminaire, is characterized in that, described LED luminaire has the rectification circuit as described in one of claim 1 to 6.
10. a transport facility, is characterized in that, described transport facility has LED luminaire as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884983.0U CN203884022U (en) | 2013-12-30 | 2013-12-30 | Full bridge rectification circuit for driving LED and LED lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884983.0U CN203884022U (en) | 2013-12-30 | 2013-12-30 | Full bridge rectification circuit for driving LED and LED lighting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN203884022U true CN203884022U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320884983.0U Expired - Fee Related CN203884022U (en) | 2013-12-30 | 2013-12-30 | Full bridge rectification circuit for driving LED and LED lighting equipment |
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| CN (1) | CN203884022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602836A (en) * | 2019-10-18 | 2019-12-20 | 陈志明 | Non-polar LED lamp for alternating current or direct current and manufacturing method thereof |
-
2013
- 2013-12-30 CN CN201320884983.0U patent/CN203884022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602836A (en) * | 2019-10-18 | 2019-12-20 | 陈志明 | Non-polar LED lamp for alternating current or direct current and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20171230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |