CN107124785A - LED linear power supply dynamics compensation circuits, drive circuit and photoelectricity module - Google Patents
LED linear power supply dynamics compensation circuits, drive circuit and photoelectricity module Download PDFInfo
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- CN107124785A CN107124785A CN201611109434.0A CN201611109434A CN107124785A CN 107124785 A CN107124785 A CN 107124785A CN 201611109434 A CN201611109434 A CN 201611109434A CN 107124785 A CN107124785 A CN 107124785A
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- led
- power supply
- compensation circuits
- drive circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The present invention discloses a kind of LED linear power supply dynamics compensation circuits, drive circuit and photoelectricity module, belongs to light source lighting technical field.LED linear power supply dynamics compensation circuits include：Polar capacitor unit；ON time control unit, in an ac cycle, controlling the LED linear power supply dynamics compensation circuits to compensation time of the power supply；Compensating switch unit, the compensating switch unit is turned on and off according to the control instruction of the ON time control unit, when opening, and the polar capacitor unit is that the LED/light source is powered, when closed, and the power supply is that the polar capacitor unit is charged；Reverse current unit is prevented, for preventing LED linear power supply dynamics compensation circuits from, when compensating LED/light source, preventing electric current from reversely floing back towards power supply.Invention additionally discloses the LED drive circuit including foregoing LED linear power supply dynamics compensation circuits and LED photovoltaic module, it is adaptable to great power LED photoelectricity module, with hoisting power factor, it is ensured that the beneficial effect of LED/light source power stability.
Description
Technical field
The present invention relates to a kind of light source lighting technical field, more particularly to a kind of LED linear power supply dynamics compensation circuits, tool
There are the LED drive circuit and LED photovoltaic module of above-mentioned LED linear power supply dynamics compensation circuits.
Background technology
High-powered LED lamp becomes increasingly popular application.At present, LED application mostly low pressure is oriented and carried or the confession of small-power module
Load form, the former needs relatively high power to control circuit or power model pressure limiting to power, there is decompression heat consumption, efficiency is low, and without
Ji, the latter has that voltage utilization is low, and power is small, and peripheral control part is more, it is difficult to reach illuminating effect, and promoting has limitation
Property.
Great power LED light efficiency is high, energy-conservation, is also overload, heat-resisting, the ageing-resistant semiconductor devices having much room for improvement, to for carrying
The requirement of power supply is more strict, preferably supplies to carry with without ripple, Chi Su, the good battery class direct current of stability, and AC-DC direct currents
It is the dc source converted with 50Hz frequency weeks, because of each cycle valley point Non voltage output, belongs to without slow speed, and by external power grid
Load effect voltage step is sometimes up to ± 10%, and less stable, people are prolonged by increasing the method that DC filter capacitor charges
Time of the direct current for load in long period.
Documents 1 (CN102102812A) disclose a kind of LED alternating-current bulb, including lamp body, light-emitting substrate and LED light
Body；Its lamp body is in tubbiness, and its front end printing opacity, rear end is provided with screw socket, and its lamp body is interior to turn direct current output provided with exchange input
Voltage changing module, the input connection lamp holder of its voltage changing module, it exports the positive-negative power end for being connected to light-emitting substrate.
Documents 2 (CN201339900Y) disclose a kind of energy-saving high-efficiency LED AC/DC lighting lamps, and AC-DC lighting lamp is
LED strip is carried or multi-series and parallel support method, and direct current lamp is constituted using current limliting, common voltage IC voltage stabilizings, transistor stabilized, constant-current transistor
The adjustable pattern for carrying circuit synthesis extension；AC Lamp is mended power supply using capacitance-resistance current limliting, decompression, rectifying and wave-filtering and AC-DC paddy and coordinated
Main power source control load, compound rectifying and voltage-stabilizing or constant pressure carry the permanent voltage stabilizing of control, all kinds of adjustable strings load LED shapes of frequency paddy compensator connection
Into decompression lamp, flow control perseverance, constant current lamp.
Above-mentioned documents 1 all refer to LED alternating-current lamp with documents 2, but are not involved with and how specifically to go reality
Existing power factor lifting, and the problem of power supply compensation ensures LED power stability is rationally carried out under AC-powered.
The content of the invention
The present invention is based on the one or more problems of the above, and there is provided a kind of LED linear power supply dynamics compensation circuits, LED
Drive circuit and LED photovoltaic module, power factor is not high during solving to drive LED/light source in the prior art, power shakiness
Problem.
The present invention provides a kind of LED linear power supply dynamics compensation circuits, wherein, dynamically compensation is electric for the LED linear power supply
The power supply that road is used to be in LED/light source when under exchange driving is compensated, including：
Polar capacitor unit, for storing electricity；
ON time control unit, in an ac cycle, controlling the LED linear power supply dynamics compensation circuits
To the compensation time of the power supply；
Compensating switch unit, the compensating switch unit according to the ON time control unit control instruction open or
Close, when opening, the polar capacitor unit is that the LED/light source is powered, when closed, and the power supply is polarity electricity
Hold unit to be charged；Reverse current unit is prevented, for preventing the LED linear power supply dynamics compensation circuits described in compensation
During LED/light source, prevent electric current from reversely floing back towards power supply.
It is preferred that when the alternating voltage of the AC power is less than or equal to default conducting voltage, the ON time control
Unit processed sends power supply compensating instruction and opens the compensating switch unit, and controls to provide compensation power supply for the LED/light source
Time.
It is preferred that when the alternating voltage of the AC power is more than the default conducting voltage, the ON time control
Unit processed, which is sent, stops compensating instruction, closes the compensating switch unit, controls the power supply to be filled for the polar capacitor unit
The time of electricity.
It is preferred that the default conducting voltage for alternating voltage peak 0.3 to 0.4 between when, open it is described compensation open
Close unit.
It is preferred that the compensating switch unit includes FET.
It is preferred that described prevent reverse current unit from including diode.
The present invention also provides a kind of LED drive circuit, wherein, the LED drive circuit includes：LED drive chip and
Foregoing LED linear power supply dynamics compensation circuits.
It is preferred that the ON time control unit includes an ON time control chip, the ON time controls core
Piece connects the compensating switch unit and the LED drive chip respectively.
It is preferred that the LED drive circuit also includes discharge cell, the discharge cell is used to enter for the LED/light source
Row electric discharge, and it is discharged to the polar capacitor unit.
The present invention also provides a kind of LED photovoltaic module, and the LED photovoltaic module includes substrate, on the substrate
LED drive circuit and LED/light source, wherein, the LED drive circuit is foregoing LED drive circuit.
LED linear power supply dynamics compensation circuits of the present invention, LED drive circuit and LED photovoltaic module, it is adaptable to high-power
LED photovoltaic module, with hoisting power factor, it is ensured that the beneficial effect of LED/light source power stability.
Brief description of the drawings
Fig. 1 is the drive circuit module schematic diagram of the LED photovoltaic module of present pre-ferred embodiments.
Fig. 2 is the driving circuit structure schematic diagram of the LED photovoltaic module of present pre-ferred embodiments.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.If it should be noted that do not conflicted, this hair
Each feature in bright embodiment and embodiment can be combined with each other, within protection scope of the present invention.
Fig. 1 and Fig. 2 are referred to, Fig. 1 is the drive circuit module signal of the LED photovoltaic module of present pre-ferred embodiments
Figure；Fig. 2 is the driving circuit structure schematic diagram of the LED photovoltaic module of present pre-ferred embodiments.As depicted in figs. 1 and 2, this hair
It is bright that a kind of LED photovoltaic module is provided, the LED photovoltaic module include substrate, the LED drive circuit on the substrate and
LED/light source.Here the modeling of the substrate commonly heat conduction such as aluminium base good metal substrate or other heat conduction well
Material.LED drive circuit driving LED/light source lights, and LED/light source can be that plurality of LEDs lamp serial or parallel connection is formed or single
High-capacity LED lamp.Here LED can be the LED or common common LED lamp of variable color temperature.
The LED drive circuit includes：
Power subsystem 10, for providing alternating current for the LED drive circuit；
LED drive chip 70, for the normal luminous of drive control LED/light source 60；LED drive chip 70 can be linear perseverance
Flow driving chip.
LED linear power supply dynamics compensation circuits, are compensated for being in power supply when under exchange driving to LED/light source,
Including：
Polar capacitor unit 30, for storing electricity；
ON time control unit 40, in an ac cycle, controlling the LED linear power supply dynamically compensation electricity
Compensation time of the road to the power supply；
Compensating switch unit 50, control instruction of the compensating switch unit 50 according to the ON time control unit 40
It is turned on and off, when opening, the polar capacitor unit 30 is that the LED/light source 60 is powered, when closed, the power supply list
Member 10 is that the polar capacitor unit 30 is charged.
Further, the LED linear power supply dynamics compensation circuits also include：Reverse current unit 20 is prevented, respectively with electricity
Source unit 10 and polar capacitor unit 30 are connected, for preventing the LED linear power supply dynamics compensation circuits from compensating the LED
During light source, prevent electric current from reversely floing back towards power subsystem 10.
Further, when the alternating voltage of the AC power is less than or equal to default conducting voltage, the ON time
Control unit 40 sends power supply compensating instruction and opens the compensating switch unit 50, and controls to provide benefit for the LED/light source 60
Repay the time of power supply.
Further, when the alternating voltage of the AC power is more than the default conducting voltage, during the conducting
Between control unit send and stop compensating instruction, close the compensating switch unit, control the power supply for the polar capacitor list
The time of member charging.
In Fig. 1, the principles and methods of LED drive circuit are as follows：
Power subsystem 10 provides alternating current to LED drive chip 70, the driving normal work of LED/light source 60 of LED drive chip 70
Make.To lift the power factor (PF) of LED drive circuit, LED linear power supply dynamics compensation circuits are set in LED drive circuit, should
LED linear power supply dynamics compensation circuits are turned on and off electricity according to the change of alternating voltage size in the ac cycle of AC power
Source is compensated, linear and cyclically-varying during due to AC power, therefore is linear power supply dynamics compensation circuits.It is dynamic in linear power supply
When state compensation circuit is just started working, power subsystem 10 through preventing reverse current unit 20 from being powered to polar capacitor unit 30, this
Can LED linear power supply dynamics compensation circuits be charged in advance before LED drive circuit life's work.
After LED drive circuit life's work, when the alternating voltage in AC power is less than or equal to default conducting voltage, institute
State ON time control unit 40 and send the power supply compensating instruction unlatching compensating switch unit 50, and control to be the LED light
Source 60 provides the time of compensation power supply.It is described to lead when the alternating voltage of the AC power is more than the default conducting voltage
Logical time control unit 40, which is sent, stops compensating instruction, closes the compensating switch unit 50, and the control power subsystem 10 is
The time that the polar capacitor unit 30 charges.Here crest or the voltage hundred of trough of the default conducting voltage according to alternating current
Point voltage of ratio or LED drive circuit power factor when changing is determined.Preferably become by determining power factor
The voltage of change determines the size of default conducting voltage.In addition, default conducting voltage can be alternating voltage peak 0.3 to
Compensating switch unit 50 is opened when between 0.4 preferably, default conducting voltage may cause when being more than the 0.4 of alternating voltage peak
LED/light source excessively stream, also results in the compensation time oversize；And default conducting voltage may when being less than the 0.3 of alternating voltage peak
Influence the lifting of power factor.Opened when may also be other data certainly, but want guarantee power factor.
As shown in Fig. 2 the L ends connection in the AC power L ends (zero line) and N-terminal (zero line side) of LED drive circuit is more
LED lamp LED1 ... LEDn, then a branch road be connected to LED drive chip 70, another branch road connection capacitor cell C1 is followed by
Ground GND, ON time control unit 40 includes an ON time control chip 41, and described one end of ON time control chip 41 connects
The FET 51 as compensating switch unit is connect, the other end connects the LED drive chip 70.It is described to prevent reverse current unit
Including diode 21.
In addition, the LED drive circuit also includes discharge cell, the discharge cell is used to be used as many of LED/light source
LED lamp LED1 ... LEDn is discharged.The electric current of LED/light source electric discharge flows into polar capacitor unit 31 after being discharged through discharge cell
Stored in included electric capacity C2.Here, discharge cell includes two series resistances R3 and R4, can also comprise only a resistance.
LED linear power supply dynamics compensation circuits of the present invention, LED drive circuit and LED photovoltaic module, it is adaptable to high-power
LED photovoltaic module, with hoisting power factor, it is ensured that the beneficial effect of LED/light source power stability.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of LED linear power supply dynamics compensation circuits, it is characterised in that the LED linear power supply dynamics compensation circuits are used for
Power supply when under exchange driving is in LED/light source to compensate, including：
Polar capacitor unit, for storing electricity；
ON time control unit, in an ac cycle, controlling the LED linear power supply dynamics compensation circuits to institute
State the compensation time of power supply；
Compensating switch unit, the compensating switch unit is opened or closed according to the control instruction of the ON time control unit
Close, when opening, the polar capacitor unit is that the LED/light source is powered, when closed, and the power supply is the polar capacitor
Unit is charged；
Reverse current unit is prevented, for preventing the LED linear power supply dynamics compensation circuits from, when compensating the LED/light source, preventing
Only electric current reversely flows back towards power supply.
2. LED linear power supply dynamics compensation circuits as claimed in claim 1, it is characterised in that when the friendship of the AC power
When flowing voltage less than or equal to default conducting voltage, the ON time control unit sends power supply compensating instruction and opens the compensation
Switch element, and control to provide the time of compensation power supply for the LED/light source.
3. LED linear power supply dynamics compensation circuits as claimed in claim 2, it is characterised in that when the friendship of the AC power
When flowing voltage more than the default conducting voltage, the ON time control unit, which is sent, stops compensating instruction, closes described mend
Switch element is repaid, it is the time that the polar capacitor unit charges to control the power supply.
4. LED linear power supply dynamics compensation circuits as claimed in claim 3, it is characterised in that the default conducting voltage is
When between the 0.3 to 0.4 of alternating voltage peak, the compensating switch unit is opened.
5. the LED linear power supply dynamics compensation circuits as described in any one of claim 2 to 4, it is characterised in that the compensation is opened
Closing unit includes FET.
6. LED linear power supply dynamics compensation circuits as claimed in claim 5, it is characterised in that described to prevent reverse current unit
Including diode.
7. a kind of LED drive circuit, it is characterised in that the LED drive circuit includes：LED drive chip and as right will
Seek the LED linear power supply dynamics compensation circuits described in 1 to 6 any one.
8. LED drive circuit as claimed in claim 7, it is characterised in that the ON time control unit includes a conducting
Time control chip, the ON time control chip connects the compensating switch unit and the LED drive chip respectively.
9. LED drive circuit as claimed in claim 8, it is characterised in that the LED drive circuit also includes discharge cell,
The discharge cell is used to be discharged for the LED/light source, and is discharged to the polar capacitor unit.
10. a kind of LED photovoltaic module, the LED photovoltaic module include substrate, the LED drive circuit on the substrate and
LED/light source, it is characterised in that the LED drive circuit is the LED drive circuit described in any one of claim 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109434.0A CN107124785B (en) | 2016-12-02 | 2016-12-02 | LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611109434.0A CN107124785B (en) | 2016-12-02 | 2016-12-02 | LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107124785A true CN107124785A (en) | 2017-09-01 |
| CN107124785B CN107124785B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611109434.0A Active CN107124785B (en) | 2016-12-02 | 2016-12-02 | LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661392A (en) * | 2013-11-25 | 2015-05-27 | 上海莱托思电子科技有限公司 | Constant-current driving circuit for LED switch |
| CN204948416U (en) * | 2015-07-31 | 2016-01-06 | 古道雄 | LED light emission device and drive circuit thereof |
| CN105554974A (en) * | 2014-10-22 | 2016-05-04 | 硅工厂股份有限公司 | Lighting apparatus |
| WO2016163533A1 (en) * | 2015-04-08 | 2016-10-13 | シチズンホールディングス株式会社 | Led drive circuit |
| CN106162990A (en) * | 2016-07-05 | 2016-11-23 | 浙江中睿低碳科技有限公司 | LED light device and method of work thereof |
-
2016
- 2016-12-02 CN CN201611109434.0A patent/CN107124785B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661392A (en) * | 2013-11-25 | 2015-05-27 | 上海莱托思电子科技有限公司 | Constant-current driving circuit for LED switch |
| CN105554974A (en) * | 2014-10-22 | 2016-05-04 | 硅工厂股份有限公司 | Lighting apparatus |
| WO2016163533A1 (en) * | 2015-04-08 | 2016-10-13 | シチズンホールディングス株式会社 | Led drive circuit |
| CN204948416U (en) * | 2015-07-31 | 2016-01-06 | 古道雄 | LED light emission device and drive circuit thereof |
| CN106162990A (en) * | 2016-07-05 | 2016-11-23 | 浙江中睿低碳科技有限公司 | LED light device and method of work thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107124785B (en) | 2019-07-26 |
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