CN107124785B - LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group - Google Patents
LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group Download PDFInfo
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- CN107124785B CN107124785B CN201611109434.0A CN201611109434A CN107124785B CN 107124785 B CN107124785 B CN 107124785B CN 201611109434 A CN201611109434 A CN 201611109434A CN 107124785 B CN107124785 B CN 107124785B
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- power supply
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- light source
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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]
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The present invention discloses a kind of LED linear power supply dynamics compensation circuits, driving circuit and photoelectricity mould group, belongs to light source lighting technical field.LED linear power supply dynamics compensation circuits include: polar capacitor unit；Turn-on time control unit, for controlling the LED linear power supply dynamics compensation circuits to the compensation time of the power supply in an ac cycle；Compensating switch unit, the compensating switch unit are opened or closed according to the control instruction of the turn-on time control unit, and when opening, which is LED light source power supply, and when closed, which is that the polar capacitor unit charges；Reverse current unit is prevented, for preventing LED linear power supply dynamics compensation circuits when compensating LED light source, prevents electric current from reversely floing back towards power supply.Invention additionally discloses LED drive circuits and LED photovoltaic mould group including aforementioned LED linear power supply dynamics compensation circuits, are suitable for great power LED photoelectricity mould group, have hoisting power factor, guarantee 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, tools
There are the LED drive circuit and LED photovoltaic mould group of above-mentioned LED linear power supply dynamics compensation circuits.
Background technique
High-powered LED lamp becomes increasingly popular application.Currently, LED light application be mostly low pressure orient and carry or small-power module confession
Load form, the former needs relatively high power control circuit or power module pressure limiting to power, there are decompression heat consumption, low efficiency, and without
Ji, that there are voltage utilizations is low by the latter, and power is small, and peripheral control part is more, it is difficult to reach illuminating effect, promoting has limitation
Property.
Great power LED light efficiency is high, energy saving, and overload, heat-resisting, ageing-resistant semiconductor devices to be improved, to for carrying
The requirement of power supply is more stringent, preferably with no wave, Chi Su, the good battery class direct current of stability for carrying, and AC-DC direct current
It is to be belonged to because of each period valley point Non voltage output without slow speed with the 50Hz DC power supply that converts of frequency week, and by external power grid
Load effect voltage step is sometimes up to ± 10%, and stability is poor, and 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 light bulb, including lamp body, light-emitting substrate and LED shine
Body；Its lamp body is in tubbiness, and front end light transmission, rear end is equipped with screw socket, exchange input is equipped in lamp body and turns direct current output
Voltage changing module, the input terminal of voltage changing module connect lamp cap, and output is connected to the positive-negative power end of 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 string carries or multi-series and parallel support method, and direct current lamp is constituted using current limliting, common voltage IC pressure stabilizing, transistor stabilized, constant-current transistor
The adjustable mode for carrying circuit synthesis extension；AC Lamp mends power supply cooperation using capacitance-resistance current limliting, decompression, rectifying and wave-filtering and AC-DC paddy
Main power source control load, compound rectifying and voltage-stabilizing or constant pressure or load control permanent pressure stabilizing, frequency paddy compensator connects all kinds of adjustable strings and carries LED shapes
At decompression lamp, flow control perseverance, constant current lamp.
Above-mentioned documents 1 all refer to LED alternating-current lamp with documents 2, however are not involved with and how specifically to go reality
The problem of power supply compensation guarantees LED light power stability is rationally carried out under existing power factor promotion and AC power supply.
Summary of the invention
The present invention is based on above one or more problem, provides a kind of LED linear power supply dynamics compensation circuits, LED
Driving circuit and LED photovoltaic mould group, power factor is not high when 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 the LED linear power supply dynamic compensates electricity
The power supply that road is used for when being under exchange driving to LED light source compensates, comprising:
Polar capacitor unit is used for storing electricity；
Turn-on time control unit, for controlling the LED linear power supply dynamics compensation circuits in an ac cycle
To the compensation time of the power supply；
Compensating switch unit, the compensating switch unit according to the turn-on time control unit control instruction open or
It closes, when opening, the polar capacitor unit is LED light source power supply, and when closed, the power supply is the polarity electricity
Hold unit to charge；Reverse current unit is prevented, for preventing the LED linear power supply dynamics compensation circuits described in the compensation
When LED light source, prevent electric current from reversely floing back towards power supply.
Preferably, when the alternating voltage of the AC power source is less than or equal to default conducting voltage, the turn-on time control
Unit processed sends power supply compensating instruction and opens the compensating switch unit, and controls and provide compensation power supply for the LED light source
Time.
Preferably, when the alternating voltage of the AC power source is greater than the default conducting voltage, the turn-on time control
Unit processed, which is sent, stops compensating instruction, closes the compensating switch unit, and controlling the power supply is that the polar capacitor unit fills
The time of electricity.
Preferably, opening the compensation when the default conducting voltage is between the 0.3 to 0.4 of alternating voltage peak and opening
Close unit.
Preferably, the compensating switch unit includes field-effect tube.
Preferably, described, to prevent reverse current unit include diode.
The present invention also provides a kind of LED drive circuits, wherein the LED drive circuit include: LED drive chip and
Foregoing LED linear power supply dynamics compensation circuits.
Preferably, the turn-on time control unit includes that a turn-on time controls chip, the turn-on time controls core
Piece is separately connected the compensating switch unit and the LED drive chip.
Preferably, the LED drive circuit further includes discharge cell, the discharge cell be used for for the LED light source into
Row electric discharge, and it is discharged to the polar capacitor unit.
The present invention also provides a kind of LED photovoltaic mould group, the LED photovoltaic mould group includes substrate, on the substrate
LED drive circuit and LED light source, wherein the LED drive circuit is mentioned-above LED drive circuit.
LED linear power supply dynamics compensation circuits, LED drive circuit and LED photovoltaic mould group of the present invention are suitable for high-power
LED photovoltaic mould group has hoisting power factor, guarantees the beneficial effect of LED light source power stability.
Detailed description of the invention
Fig. 1 is the drive circuit module schematic diagram of the LED photovoltaic mould group of present pre-ferred embodiments.
Fig. 2 is the driving circuit structure schematic diagram of the LED photovoltaic mould group of present pre-ferred embodiments.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.It should be noted that if do not conflicted, this hair
Each feature in bright embodiment and embodiment can be combined with each other, within the scope of the present invention.
Referring to Figure 1 and Fig. 2, Fig. 1 be present pre-ferred embodiments LED photovoltaic mould group drive circuit module signal
Figure；Fig. 2 is the driving circuit structure schematic diagram of the LED photovoltaic mould group of present pre-ferred embodiments.As depicted in figs. 1 and 2, this hair
It is bright that a kind of LED photovoltaic mould group is provided, the LED photovoltaic mould group include substrate, the LED drive circuit on the substrate and
LED light source.Here the substrate commonly thermally conductive good metal substrate such as aluminum substrate, is also possible to other thermally conductive good modelings
Material.The LED drive circuit drives LED light source to shine, and LED light source can be plurality of LEDs lamp string connection or be formed in parallel, and can also be list
High-capacity LED lamp.Here LED light can be the LED light of variable color temperature, can also be common common LED lamp.
The LED drive circuit includes:
Power supply unit 10, for providing alternating current for the LED drive circuit；
LED drive chip 70 is used for 60 normal luminous of drive control LED light source；LED drive chip 70 can be linear perseverance
Flow driving chip.
LED linear power supply dynamics compensation circuits, power supply when for being under exchange driving to LED light source compensate,
Include:
Polar capacitor unit 30 is used for storing electricity；
Turn-on time control unit 40 compensates electricity in an ac cycle, controlling the LED linear power supply dynamic
Compensation time of the road to the power supply；
Compensating switch unit 50, control instruction of the compensating switch unit 50 according to the turn-on time control unit 40
It opens or closes, when opening, the polar capacitor unit 30 is the LED light source 60 power supply, when closed, the power supply list
Member 10 charges for the polar capacitor unit 30.
Further, the LED linear power supply dynamics compensation circuits further include: prevent reverse current unit 20, respectively with electricity
Source unit 10 and polar capacitor unit 30 connect, for preventing the LED linear power supply dynamics compensation circuits from compensating the LED
When light source, prevent electric current from reversely floing back towards power supply unit 10.
Further, when the alternating voltage of the AC power source is less than or equal to default conducting voltage, the turn-on time
Control unit 40 sends power supply compensating instruction and opens the compensating switch unit 50, and controlling is that the LED light source 60 provides benefit
Repay the time of power supply.
Further, when the alternating voltage of the AC power source is greater than the default conducting voltage, when the conducting
Between control unit send stop compensating instruction, close the compensating switch unit, control the power supply be the polar capacitor list
The time of member charging.
In Fig. 1, the principles and methods of LED drive circuit are as follows:
Power supply unit 10 provides alternating current to LED drive chip 70, and LED drive chip 70 drives the normal work of LED light source 60
Make.For the power factor (PF) for promoting LED drive circuit, LED linear power supply dynamics compensation circuits are set in LED drive circuit, it should
LED linear power supply dynamics compensation circuits open or close electricity according to the variation of alternating voltage size in the ac cycle of AC power source
Source compensation, linear and cyclically-varying, is linear power supply dynamics compensation circuits when due to AC power source.It is dynamic in linear power supply
When state compensation circuit is just started to work, power supply unit 10 is prevented reverse current unit 20 from powering to polar capacitor unit 30, this
It charges in advance to LED linear power supply dynamics compensation circuits before can be LED drive circuit life's work.
After LED drive circuit life's work, when the alternating voltage in AC power source is less than or equal to default conducting voltage, institute
It states turn-on time control unit 40 and sends the power supply compensating instruction unlatching compensating switch unit 50, and controlling is 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 source is greater than the default conducting voltage
Logical time control unit 40, which is sent, stops compensating instruction, closes the compensating switch unit 50, controlling the power supply unit 10 is
The time that the polar capacitor unit 30 charges.Here default conducting voltage is according to the wave crest of alternating current or the voltage hundred of trough
Point voltage of ratio or LED drive circuit power factor when changing determines.Preferably become by measuring power factor
The voltage of change determines the size of default conducting voltage.In addition, default conducting voltage can be the 0.3 of alternating voltage peak to
Compensating switch unit 50 is opened when between 0.4 preferably, default conducting voltage may cause when being greater than the 0.4 of alternating voltage peak
It is too long to also result in the compensation time for LED light source overcurrent；And default conducting voltage may when being less than the 0.3 of alternating voltage peak
Influence the promotion of power factor.Unlatching when can also be other data certainly, but want guarantee power factor.
As shown in Fig. 2, the end AC power source L (zero line) of LED drive circuit connected with the end L in N-terminal (zero line side) it is more
LED lamp LED1 ... LEDn, right the latter branch are connected to LED drive chip 70, and another branch connection capacitor cell C1 is followed by
Ground GND, turn-on time control unit 40 include that a turn-on time controls chip 41, and the turn-on time control 41 one end of chip connects
The field-effect tube 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 further includes discharge cell, the discharge cell is used for as the more of LED light source
LED lamp LED1 ... LEDn discharges.The electric current of LED light source electric discharge flows into polar capacitor unit 31 after discharge cell discharges
It is stored in included capacitor C2.Here, discharge cell includes two series resistances R3 and R4, can also contain only a resistance.
LED linear power supply dynamics compensation circuits, LED drive circuit and LED photovoltaic mould group of the present invention are suitable for high-power
LED photovoltaic mould group has hoisting power factor, guarantees the beneficial effect of LED light source power stability.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (7)
1. a kind of LED linear power supply dynamics compensation circuits, which is characterized in that the LED linear power supply dynamics compensation circuits are used for
Power supply when being under exchange driving to LED light source compensates, comprising:
Polar capacitor unit is used for storing electricity；
Turn-on time control unit, for controlling the LED linear power supply dynamics compensation circuits to institute in an ac cycle
State the compensation time of power supply；
Compensating switch unit, the compensating switch unit are opened or are closed according to the control instruction of the turn-on time control unit
It closes, when opening, the polar capacitor unit is LED light source power supply, and when closed, the power supply is the polar capacitor
Unit charges；
Reverse current unit is prevented, for preventing the LED linear power supply dynamics compensation circuits when compensating the LED light source, is prevented
Only electric current reversely flows back towards power supply；
When the alternating voltage of AC power source is less than or equal to default conducting voltage, the turn-on time control unit sends power supply and mends
It repays instruction and opens the compensating switch unit, and control and provide the time of compensation power supply for the LED light source；
When the alternating voltage of the AC power source is greater than the default conducting voltage, the turn-on time control unit transmission stops
Only compensating instruction closes the compensating switch unit, controls the time that the power supply is polar capacitor unit charging.
2. LED linear power supply dynamics compensation circuits as described in claim 1, which is characterized in that the compensating switch unit packet
Include field-effect tube.
3. LED linear power supply dynamics compensation circuits as claimed in claim 2, which is characterized in that described to prevent reverse current unit
Including diode.
4. a kind of LED drive circuit, which is characterized in that the LED drive circuit includes: LED drive chip and as right is wanted
Seek 1 to 3 described in any item LED linear power supply dynamics compensation circuits.
5. LED drive circuit as claimed in claim 4, which is characterized in that the turn-on time control unit includes a conducting
Time controls chip, and the turn-on time control chip is separately connected the compensating switch unit and the LED drive chip.
6. LED drive circuit as claimed in claim 5, which is characterized in that the LED drive circuit further includes discharge cell,
The discharge cell is used to discharge for the LED light source, and is discharged to the polar capacitor unit.
7. a kind of LED photovoltaic mould group, the LED photovoltaic mould group include substrate, the LED drive circuit on the substrate and
LED light source, which is characterized in that the LED drive circuit is the described in any item LED drive circuits of claim 4 to 6.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN107124785A CN107124785A (en) | 2017-09-01 |
| CN107124785B true CN107124785B (en) | 2019-07-26 |
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| 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 |
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| Publication number | Publication date |
|---|---|
| CN107124785A (en) | 2017-09-01 |
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