CN107135582A - A kind of method and device of LED power supply circuits direct current supply - Google Patents
A kind of method and device of LED power supply circuits direct current supply Download PDFInfo
- Publication number
- CN107135582A CN107135582A CN201710544483.5A CN201710544483A CN107135582A CN 107135582 A CN107135582 A CN 107135582A CN 201710544483 A CN201710544483 A CN 201710544483A CN 107135582 A CN107135582 A CN 107135582A
- Authority
- CN
- China
- Prior art keywords
- frequency
- led
- direct current
- output
- alternating current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of method and device of LED power supply circuits direct current supply, the method comprising the steps of：The industrial-frequency alternating current that circuit is inputted is converted into direct current, and direct current is changed, and direct current is converted into high-frequency alternating current；Output control module is handled high-frequency alternating current circuit output, obtains stable circuit output to power load modules, wherein load blocks include high-frequency rectification bridge and LED, LED two ends are connected respectively with the two ends that high-frequency rectification bridge is exported；Device includes modular converter, high-frequency electronic ballast module, output control module and load blocks；Implement the present invention, reduce the power consumption of supply line's electric energy, it is ensured that the stabilization of LED brightness, it is low to solve LED supply line current utilization rate in the prior art, power consumption is high and brightness is low and LED glare problem.
Description
Technical field
The present invention relates to LED technology field, more specifically to a kind of LED suppliers of electricity for having and stablizing output performance
Method and LED matrix.
Background technology
In recent years, country advocated Green Development, and some new energy enterprises are helped, the conventional illumination fluorescent lamp of family
Because power consumption is gradually replaced greatly by LED, LED due to energy-conserving and environment-protective, long lifespan, many merits such as photoelectric efficiency is high, the startup time is short,
Become lighting field focus of attention.Faced more challenges because the unique electrical characteristics of LED cause LED to power also, LED
Supply line is related to the reliability of whole LED illumination System performance.LED etc. DC current, which is powered, in the world at present is all
A kind of pure DC current of straight line waveform, it is remained in many weak points.
The use voltage of current LED single tube tube cores is still relatively low, and about 3.6V or so is directly powered using 220V rectifications
When, it is necessary to many single tube chip connection in series-parallel are used, to reduce the damage probability of die, improve reliability, do not use typically
220V alternating currents are directly powered, and general way is：First 220V alternating currents are depressurized to using electric capacity or RC capacitance-resistances circuit
75V~130V, then after filtering after rectification just powered to LED, still, so the effective rate of utilization of electric current can be caused relatively low,
It is lost with larger line power.
The content of the invention
The technical problem to be solved in the present invention is, low for LED supply lines current utilization rate in the prior art, idle
The problem of loss height and low brightness, a kind of method and device of LED power supply circuits direct current supply is proposed, high-frequency electronic town is set
Direct current after conversion is converted into high-frequency alternating current by stream device module, LED stroboscopic problem is prevented effectively from, then to high-frequency electronic
The output of ballast modular circuit carries out stable processing, obtain the stable alternating current exported, it is to avoid output is unstable to LED
The harmful effect of brightness, and rectification is carried out to the alternating current of circuit output, it is to avoid alternating current decompression is directly supplied electricity to LED,
Reduce the power consumption of electric energy, it is ensured that the stabilization of LED brightness, it is low to solve LED supply lines current utilization rate in the prior art,
Reactive loss is high and brightness is low and LED glare problem, improves experience of the user to LED product.
First aspect is there is provided a kind of method that LED power supply circuits high-frequency direct-current is powered, and the LED power supply circuits include using
The industrial-frequency alternating current inputted in circuit carries out EMI filtering and the filtered industrial-frequency alternating currents of EMI is converted into the conversion of direct current
Module, the high-frequency electronic ballast module for the direct current to be converted into high-frequency alternating current, wherein, in addition to for by institute
The output of high-frequency electronic ballast module is stated to be converted into the output control module of constant output there is provided including for by constant output
Industrial-frequency alternating current changes into the dither direct current high-frequency rectification bridge BD that use of supply LED and loads LED load blocks, side
Method includes step：
The industrial-frequency alternating current that circuit is inputted is converted into direct current, and the direct current is converted into high-frequency alternating current；
The output control module is handled high-frequency alternating current circuit output, obtains stable circuit output to described
Power load modules, wherein, the load blocks include high-frequency rectification bridge BD and LED, the two ends of the LED and the high frequency
The two ends of rectifier bridge BD outputs are connected respectively.
With reference in the technical program in a first aspect, high-frequency electronic ballast mould described in the first possible implementation
Resonance occurs for block, internal resonance circuit, produces high-frequency approximation sinusoidal ac.
With reference in the technical program in a first aspect, output control module described in second of possible implementation is height
Frequency inductance, the input of the high-frequency inductor is connected with the inductance coil Tb of the high-frequency electronic ballast module the second end,
The output end of the high-frequency inductor the second end respectively with the electric capacity C7 in the high-frequency electronic ballast module and the high frequency
Rectifier bridge BD first input end connection.
With reference in the technical program in a first aspect, output control module is steady described in the third possible implementation
Element is pressed, the first end of the voltage stabilizing element is connected with the first end of the high-frequency electronic ballast module, the voltage stabilizing element
The second end be connected with the first input end of the high-frequency rectification bridge BD, the 3rd end of the voltage stabilizing element and the high frequency are whole
Flow bridge BD the second input connection.
With reference in the technical program in a first aspect, output control module described in the 4th kind of possible implementation is perseverance
Source component is flowed, the constant current source component includes constant current source chip and resistance R, the resistance R input and the high-frequency electronic
Ballast module and the connection of the first end of constant current source chip, the output end of the resistance R and the second end of the constant current source chip
Connection, the 3rd end of the constant current source chip is connected with the second end of the high-frequency electronic ballast module, the constant current source core
4th end of piece is connected with the first input end of the high-frequency rectification bridge BD.
With reference in the technical program in a first aspect, in the 5th kind of possible implementation, in the power frequency for inputting circuit
Alternating current is converted into direct current, and direct current is changed, and the step of direct current is converted into high-frequency alternating current is included to electricity
The step of industrial-frequency alternating current of road input carries out EMI filtering.
With reference in the technical program in a first aspect, in the 6th kind of possible implementation, in the output control module
High-frequency alternating current circuit output is handled, stable circuit output is obtained to power load modules, wherein, the load mould
Block includes high-frequency rectification bridge BD and LED, and the two ends of the LED are connected respectively with the high-frequency rectification bridge BD two ends exported
The step of the step of include the alternating current of stable circuit output being converted into direct current.
Second aspect provides a kind of LED matrix, including the industrial-frequency alternating current inputted for circuit carries out EMI filtering and incited somebody to action
The filtered industrial-frequency alternating currents of EMI are converted into the modular converter of direct current, the high frequency for direct current to be changed to high-frequency alternating current
Electroinc ballast module, wherein, in addition to for high-frequency electronic ballast module output to be converted into the defeated of constant output
Go out control module and load blocks, the load blocks include being used for the alternating current of constant output is changed into direct current supply LED
High-frequency rectification the bridge BD and LED used.
With reference to the second aspect in the technical program, in the first possible implementation, the output control module is
High-frequency inductor, voltage stabilizing element or constant current source component that the technical program first aspect is provided, wherein, the constant current source component includes
Constant current source chip and resistance R.
It is a kind of with the LED method of supplying power to and LED matrix of stablizing output performance that the implementation present invention is provided, and passes through and sets high
Direct current after conversion is converted into high-frequency alternating current by band electronic ballast module, is prevented effectively from LED stroboscopic problem, then right
The output of high-frequency electronic ballast modular circuit carries out stable processing, obtain the stable alternating current exported, it is to avoid output is unstable
The fixed harmful effect to LED brightness, and rectification is carried out to the alternating current of circuit output, it is to avoid make the direct power supply of alternating current decompression
To LED, the loss of electric energy is reduced, it is ensured that the stabilization of LED brightness, solve LED supply lines electric current in the prior art
Utilization rate is low, and reactive loss is high and brightness is low and LED glare problem, improves experience of the user to LED product.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 for the present invention in a kind of LED power supply circuits direct current supply embodiment of the method step flow chart；
Schematic diagram is implemented in a kind of module logic connection of LED matrixs of the Fig. 2 to be provided in the present invention；
Schematic diagram is implemented in a kind of module logic connection of vehicle-mounted type LED matrix embodiments of the Fig. 3 to be provided in the present invention；
Schematic diagram is implemented in a kind of module logic connection of street lamp type LED matrix embodiments of the Fig. 4 to be provided in the present invention；
Fig. 5 is a kind of implementation schematic diagram of the first embodiment of LED matrix provided in the present invention；
Fig. 6 is a kind of implementation schematic diagram of the second embodiment of LED matrix provided in the present invention；
Fig. 7 is a kind of implementation schematic diagram of the 3rd embodiment of LED matrix provided in the present invention；
The electric current for the high-frequency alternating current that a kind of high-frequency electronic ballast of LED matrixs of the Fig. 8 to be provided in the present invention is produced
Oscillogram；
The electricity for the high-frequency half-wave direct current that a kind of high-frequency rectification bridge BD of LED matrixs of the Fig. 9 to be provided in the present invention is produced
Flow oscillogram；
Detailed description of main elements：100 --- industrial-frequency alternating current, 201 --- modular converter, 202 --- high-frequency electronic ballasts
Module, 203 --- output control module, 204 --- load blocks.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
The present invention provides a kind of LED daylight lamp specific embodiment, and it is supplied using high-frequency electronic ballast module 202 for LED
Circuit carries out the method and device of direct current supply, it is intended that solving LED supply lines current utilization rate in the prior art
Low, circuit work(damages high and LED stroboscopics and glare problem, by setting high-frequency electronic ballast module 202 will be straight after conversion
Stream electricity is converted into high-frequency alternating current 100, and the then output to the circuit of high-frequency electronic ballast module 202 carries out stable processing, obtains
High-frequency rectification is carried out to the high-frequency alternating current 100 of stable output, and to the alternating current of circuit output, it is to avoid make alternating current decompression straight
Connect and supply electricity to LED, reduce the loss of electric energy, improve the stabilization of LED luminance, alleviate LED glare problem, improve user
Experience to LED product.
First, the device in the technical program
Referring to Fig. 2, schematic diagram is implemented in a kind of module logic connection of LED matrixs of the Fig. 2 to be provided in the present invention；This technology
LED matrix in scheme, including it is the alternating current 100 of circuit input, modular converter 201, high-frequency electronic ballast module 202, defeated
Go out control module 203 and load blocks 204, after the converted module 201EMI filtering of industrial-frequency alternating current 100, conversion, by input
Industrial-frequency alternating current 100 is converted into direct current, then obtains after the conversion of high-frequency electronic ballast module 202 high frequency that load needs
Alternating current, LED is electric current driving component, and its brightness depends on its forward current.Therefore driven with constant current power supply
LED is a best way.Constant-current source can avoid the fluctuation because of input voltage from making output current fluctuation, and this also causes LED
Brightness remain constant, the output control module 203 in the technical program protects the circuit output of high-frequency electronic ballast
It is fixed to keep steady, and stable electric current output is obtained after circuit conversion, then whole by the high-frequency rectification bridge BD in load blocks 204
Flow into direct current supply LED to use, the electric energy loss in supply line can not only be reduced, it is ensured that the stabilization of LED luminance, also reduced
LED glare problem.
Special instruction：
1.LED power supply circuits, refer to the circuit for being powered to LED, not including LED load module；LED matrix, except including
Outside all functional modules of LED power supply circuits, in addition to load blocks；LED, only refers to the circuit of LED connection in series-parallel composition.
2. term as used herein " first ", " second ", " the 3rd ", " the 4th " and similar statement are intended merely to
Bright purpose, and it is not specific to specific order.Unless otherwise defined, all of technologies and scientific terms used here by the article and category
The implication being generally understood that in the those skilled in the art of the present invention is identical.Used in the description of the invention herein
Term be intended merely to describe specific embodiment purpose, it is not intended that in limitation the present invention.
2nd, embodiment of the method
In a first aspect, such as Fig. 1, Fig. 8 and Fig. 9, Fig. 1 for a kind of LED power supply circuits direct current supply in the present invention method
The step flow chart of embodiment, the high frequency that a kind of high-frequency electronic ballast of LED matrixs of the Fig. 8 to be provided in the present invention is produced is handed over
The current waveform figure of electricity is flowed, the high-frequency half-wave that a kind of high-frequency rectification bridge BD of LED matrixs of the Fig. 9 to be provided in the present invention is produced is straight
Flow the current waveform figure of electricity.
A kind of method of LED power supply circuits direct current supply, LED power supply circuits include being used for the industrial-frequency alternating current that circuit is inputted
100 progress EMI filtering and the modular converter 201 that the filtered industrial-frequency alternating currents 100 of EMI are converted into direct current, for by directly
The high-frequency electronic ballast module 202, wherein of stream electricity conversion high-frequency alternating current, in addition to for by high-frequency electronic ballast module
202 outputs are converted into the output control module 203 of constant output, and there is provided including for the alternating current of constant output to be changed into direct current
The reality of method in high-frequency rectification bridge BD and LED that electricity supply LED power supply circuits are used load blocks 204, the technical program
Alms giver's body be LED matrix, including circuit input industrial-frequency alternating current 100, modular converter 201, high-frequency electronic ballast module
202nd, output control module 203 and load blocks 204, the above method include step：
Step S1, the industrial-frequency alternating current 100 that circuit is inputted is converted into direct current, direct current changed, by direct current
Electricity is converted into high-frequency alternating current, and step S1 also includes entering the step of EMI is filtered to the industrial-frequency alternating current 100 that circuit is inputted, first,
Power frequency input AC electricity 100 is converted to dc source after modular converter 201EMI filtering, then by full-wave rectification, through too high
Be converted into high-frequency ac power after the conversion of band electronic ballast, the a-c cycle 50HZ of power frequency input, incandescent lamp and fluorescent lamp with
LED principle of luminosity is different, and their open and close speed is very slow, and unlike them, LED response speed is very
It hurry up, can substantially reflect the situation of change of voltage (electric current).High-frequency electronic ballast in the technical program is by dc source
20KHZ-100KHZ high frequency electric sources are converted into, then it are powered at after over commutation LED lamp, it is possible to prevente effectively from stroboscopic phenomenon goes out
It is existing, and without using reduction voltage circuit, reduce the reactive loss of the electric energy in supply line.
Specifically, LED daylight lamp is as a kind of preferred embodiment, and high-frequency electronic ballast module 202 includes：
Polar capacitor C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, resistance R1, resistance R2, resistance R3, resistance R4, electricity
Hinder R5, diode D1, diode D2, diode D3, switching tube D4, NPN type triode Q1, NPN type triode Q2, inductance coil
Ta, inductance coil Tb and inductance coil Tc；
Polar capacitor C1 positive pole connects the first of modular converter 201 as the input of high-frequency electronic ballast module 202
Output end, polar capacitor C1 positive pole and resistance R1 first end are connected to diode D1 negative electrode and NPN type triode Q1 altogether
The first end of colelctor electrode and electric capacity C3, resistance R1 the second end and diode D3 anode are connected to switching tube D4 first end altogether
With electric capacity C2 first end, the second end of polar capacitor C1 negative pole, electric capacity C2 the second end and resistance R3 is connected to inductor wire altogether
Tc the second end and electric capacity C4 the second end are enclosed, polar capacitor C1 negative pole connects the second output end of modular converter 201, diode
D3 negative electrode and diode D1 anode are connected to resistance R2 the second end and NPN type triode Q2 colelctor electrode, the pole of NPN type three altogether
Pipe Q1 base stage connecting resistance R4 first end, resistance R4 the second termination inductance coil Ta first end, the of inductance coil Ta
Two termination inductance coil Tb first end, inductance coil Tb the second termination capacitor C5 the second end, inductance coil Ta and inductance
Coil Tb commonly connected terminating resistor R2 the second end, switching tube D4 the second termination NPN type triode Q2 base stage and electricity
Hinder R5 first end, NPN type triode Q2 emitter stage connecting resistance R3 first end, resistance R5 the second termination inductance coil Tc
First end, electric capacity C3 the second end is connected with electric capacity C5 first end and electric capacity C4 the second end respectively.
In the technical program, the polar capacitor C1 in foregoing circuit is the filter capacitor of modular converter 201, R1, C2, D3
Half-bridge start-up circuit, Q1, Q2 composition half bridge inverter circuit, Ta, Tb, Tc composition pulse transformer circuit, C3, C4 are constituted with D4
Constitute the return curcuit of load current.
It should be noted that the internal circuit element of high-frequency electronic ballast module 202 is made up of and connected mode a variety of,
A kind of preferred embodiment is only provided in the technical program, as long as the direct current for being that by inputting input is converted into height
The ballast of frequency alternating current belongs to protection scope of the present invention.
Step S2, output control module 203 are handled high-frequency alternating current circuit output, obtain stable circuit output
Powered to load blocks 204, wherein, load blocks 204 include high-frequency rectification bridge BD and LED power supply circuit, LED power supply circuits
Two ends be connected respectively with the high-frequency rectification bridge BD two ends exported, step S2 includes the high-frequency ac of circuit output that will be stable
The step of electricity is converted into high-frequency DC.
In LED working range, the power output correlation of LED brightness supply line, power output
Change can also cause the change of LED luminance, and then cause brightness unstable, therefore keep supply line's output stable, favourable to protect
Hold LED brightness stability, it is to avoid bring sense of discomfort to human eye.
Further, output control module 203 can be high-frequency inductor 203a, such as Fig. 5, be provided during Fig. 5 is of the invention
A kind of implementation schematic diagram of the first embodiment of LED matrix；High-frequency inductor 203a has efficiency highest, fastest, and low consumption
Environmentally friendly feature, high-frequency inductor 203a input is connected with the inductance coil Tb of high-frequency electronic ballast module 202 the second end,
High-frequency inductor 203a output end the second end respectively with the electric capacity C5 in high-frequency electronic ballast module 202 and high-frequency rectification bridge
Road BD first input end connection.Load can be determined in the technical program according to the watt level of high-frequency electronic ballast
LED number, high frequency electric lights LED, it is to avoid the appearance of stroboscopic phenomenon.
Further, output control module 203 can also be：Such as Fig. 6, Fig. 6 is a kind of LED matrix for being provided in the present invention
Second embodiment implementation schematic diagram；Voltage stabilizing element 203b；Voltage stabilizing element 203b is voltage-stabiliser tube or mu balanced circuit, for keeping
The output voltage stabilization of high-frequency electronic ballast module 202 is in some magnitude of voltage, voltage stabilizing element 203b first end and high-frequency electronic
The first end connection of ballast module 202, voltage stabilizing element 203b the second end and the first input end of rectifier bridge are connected, voltage stabilizing
Element 203b the 3rd end is connected with high-frequency rectification bridge BD the second input.The output of supply line can be stablized certain
Magnitude of voltage, it is to avoid LED overload.
Further, output control module 203 can also be：Constant current source component, Fig. 7 is one kind for providing in the present invention
The implementation schematic diagram of the 3rd embodiment of LED matrix；Constant current source component includes constant current source chip 203c and resistance R, resistance R connections
The input and peripheral hardware resistance of constant current source chip, its major function are to be used to adjust chip output driving current, the technical program
In be AC constant-current source, with wide spectrum, high-precision AC stabilized current supply, with fast response time, constant current accuracy is high, can be long-term
Steady operation, is adapted to the advantage of various property loads, rated current is set for the size according to LED load, high frequency is kept
The electric current of Electroinc ballast module output is constant, keeps the AC constant-current source 203c master in the temperature of LED luminance, the technical program
If being fed back using device to electric current, the power supply state of dynamic regulation equipment, so that electric current tends to be constant.As long as energy
Electric current is accessed, it is possible to be effectively formed feedback, so as to set up AC constant-current source.
Specifically, the first of resistance R input and the circuit of high-frequency electronic ballast module 202 and constant current source chip 203c
End connection, resistance R output end is connected with constant current source chip 203c the second end, constant current source chip 203c the 3rd end and high frequency
The second end connection of Electroinc ballast module 202, constant current source chip 203c the 4th end and the first of high-frequency rectification bridge BD defeated
Enter end connection.The present embodiment medium-high frequency alternating current voltage is when positive and negative 15% scope is fluctuated, the permanent work(of supply line's basic guarantee
Rate is exported, and has ensured the stability of LED luminance.
Above-mentioned LED matrix can be with various deformation：
Schematic diagram, car are implemented in a kind of module logic connection of vehicle-mounted type LED matrix embodiments of the Fig. 3 to be provided in the present invention
The LED matrix of load type directly provides direct current using battery, and the follow-up processing to direct current is identical with above-mentioned processing method.
Schematic diagram is implemented in a kind of module logic connection of street lamp type LED matrix embodiments of the Fig. 4 to be provided in the present invention；Road
The LED matrix of lamp-type, high frequency electric amplifying device is added after high-frequency electronic ballast module 202, high-frequency alternating current is flowed into
Rectification is carried out again after row amplification, and other handling processes are same as mentioned above.
3rd, device embodiment
Schematic diagram is implemented in a kind of module logic connection for the LED matrix that refer to Fig. 2-4, Fig. 2 to provide in the present invention, the
Two aspects provide a kind of LED matrixs, including the alternating current inputted for circuit carries out EMI filtering and by the filtered power frequencies of EMI
Alternating current is converted into the modular converter 201 of direct current, the high-frequency electronic ballast mould for direct current to be changed to high-frequency alternating current
Block 202, wherein, in addition to for the output of high-frequency electronic ballast module to be converted into the output control module 203 of constant output
And load blocks 204, load blocks 204 by the alternating current of constant output including for changing into the height that direct current supply LED is used
Frequency rectifier bridge BD and LED.
High-frequency inductor 203a, voltage stabilizing element 203b that output control module 203 provides for the technical program first aspect or
Constant current source component, constant current source component includes constant current source chip 203c and resistance R.
Specifically, the two ends that modular converter 201 is exported connect with the two ends of the input of high-frequency electronic ballast module 202 respectively
Connect.
Specifically, as a kind of preferred embodiment, high-frequency electronic ballast module 202 includes：
Polar capacitor C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, resistance R1, resistance R2, resistance R3, resistance R4, electricity
Hinder R5, diode D1, diode D2, diode D3, switching tube D4, NPN type triode Q1, NPN type triode Q2, inductance coil
Ta, inductance coil Tb and inductance coil Tc；
Polar capacitor C1 positive pole connects the first of modular converter 201 as the input of high-frequency electronic ballast module 202
Output end, polar capacitor C1 positive pole and resistance R1 first end are connected to diode D1 negative electrode and NPN type triode Q1 altogether
The first end of colelctor electrode and electric capacity C3, resistance R1 the second end and diode D3 anode are connected to switching tube D4 first end altogether
With electric capacity C2 first end, the second end of polar capacitor C1 negative pole, electric capacity C2 the second end and resistance R3 is connected to inductor wire altogether
Tc the second end and electric capacity C4 first end are enclosed, polar capacitor C1 negative pole connects the second output end of modular converter 201, diode
D3 negative electrode and diode D1 anode are connected to resistance R2 the second end and NPN type triode Q2 colelctor electrode, the pole of NPN type three altogether
Pipe Q1 base stage connecting resistance R4 first end, resistance R4 the second termination inductance coil Ta first end, the of inductance coil Ta
Two termination inductance coil Tb first end, inductance coil Tb the second termination capacitor C5 the second end, inductance coil Ta and inductance
Coil Tb commonly connected terminating resistor R2 the second end, switching tube D4 the second termination NPN type triode Q2 base stage and electricity
Hinder R5 first end, NPN type triode Q2 emitter stage connecting resistance R3 first end, resistance R5 the second termination inductance coil Tc
First end, electric capacity C3 the second end is connected with electric capacity C5 first end and electric capacity C4 the second end respectively.
In the technical program, the polar capacitor C1 in foregoing circuit is the filter capacitor of modular converter 201, R1, C2, D3
Start-up circuit, Q1, Q2 composition half bridge inverter circuit, Ta, Tb, Tc composition pulse transformer circuit, C3, C4 composition are constituted with D4
The return curcuit of load current.
It should be noted that the internal circuit element of high-frequency electronic ballast module is made up of and connected mode a variety of, this
A kind of preferred embodiment is only provided in technical scheme, as long as the direct current for being that by inputting input is converted into high frequency
The ballast of alternating current belongs to protection scope of the present invention.
Output control module 203 can be high-frequency inductor 203a, and high-frequency inductor 203a has efficiency highest, fastest,
And the magnetic induction part of the environmentally friendly feature of low consumption.
Specifically, the output of high-frequency inductor 203a input and the inductance coil Tb of high-frequency electronic ballast module 202
End connection, high-frequency inductor 203a output end the second end respectively with the electric capacity C7 in high-frequency electronic ballast module 202 and height
Frequency rectifier bridge BD first input end connection.LED brightness is realized in the present embodiment by using high-frequency inductor 203a current limlitings
It is stable, can be determined to load according to the watt level of high-frequency electronic ballast LED number, high frequency electric is lighted LED, kept away
The appearance of stroboscopic phenomenon is exempted from.
Output control module 203 can also be：Voltage stabilizing element 203b；Voltage stabilizing element 203b be voltage-stabiliser tube or mu balanced circuit,
For keeping the output voltage stabilization of high-frequency electronic ballast module 202 in some magnitude of voltage, voltage stabilizing element 203b first end with
The first end connection of high-frequency electronic ballast module 202, voltage stabilizing element 203b the second end and the first of high-frequency rectification bridge BD
Input is connected, and voltage stabilizing element 203b the 3rd end is connected with high-frequency rectification bridge BD the second input.Can be by supply lines
The output on road stablizes certain magnitude of voltage, it is to avoid LED overload.
Output control module 203 can also be：Constant current source component, constant current component includes constant current source chip 203c and resistance R,
The input and peripheral hardware resistance of resistance R connection constant current source chips, its major function are to be used to adjust chip output driving current, this
It is AC constant-current source in technical scheme, with wide spectrum, high-precision AC stabilized current supply, with fast response time, constant current accuracy
High, energy long-term stable operation, is adapted to the advantage of various properties loads, rated current is set for the size according to LED load,
Keep the electric current of high-frequency electronic ballast module output constant, keep the exchange constant current in the temperature of LED luminance, the technical program
Source 203c mainly uses device to feed back electric current, the power supply state of dynamic regulation equipment, so that electric current tends to be permanent
It is fixed.As long as electric current can be obtained, it is possible to be effectively formed feedback, so as to set up AC constant-current source.
Specifically, resistance R input is connected with the first end of the circuit of high-frequency electronic ballast module 202, and resistance R's is defeated
Go out end to be connected with constant current source chip 203c the second end, constant current source chip 203c the 3rd end and high-frequency electronic ballast module
202 the second end connection, constant current source chip 203c the 4th end is connected with high-frequency rectification bridge BD first input end.This implementation
Example medium-high frequency alternating current voltage is when ± 10% scope is fluctuated, and supply line's basic guarantee constant power output has ensured that LED is bright
The stability of degree.
Schematic diagram, car are implemented in a kind of module logic connection of vehicle-mounted type LED matrix embodiments of the Fig. 3 to be provided in the present invention
The LED matrix of load type directly provides direct current using battery, and the follow-up processing to direct current is identical with above-mentioned processing method.
Schematic diagram is implemented in a kind of module logic connection of street lamp type LED matrix embodiments of the Fig. 4 to be provided in the present invention；Road
The LED matrix of lamp-type, high frequency electric amplifying device is added after high-frequency electronic ballast module 202, high-frequency alternating current is flowed into
Rectification is carried out again after row amplification, and other handling processes are same as mentioned above.
Implement a kind of method and LED with the LED power supply circuit direct current supplys for stablizing output performance that the present invention is provided
Device, is converted into high-frequency alternating current by setting high-frequency electronic ballast module 202 by the direct current after conversion, is prevented effectively from
LED stroboscopic problem, the then output to the circuit of high-frequency electronic ballast module 202 carries out stable processing, obtains stable export
Alternating current, it is to avoid the output unstable harmful effect to LED luminance, and rectification is carried out to the alternating current of circuit output, keep away
Exempt to make alternating current decompression directly supply electricity to LED, reduce the loss of electric energy, it is ensured that the stabilization of LED luminance, solve prior art
Middle LED supply lines current utilization rate is low, and reactive loss is high and brightness is low and LED glare problem, improves user
Experience to LED product.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (9)
1. a kind of method of LED power supply circuits direct current supply, the LED power supply circuits include being used for the industrial frequency AC that circuit is inputted
Electricity carries out EMI filtering and the filtered industrial-frequency alternating currents of EMI is converted into the modular converter of direct current, for by the direct current
Electricity is converted into the high-frequency electronic ballast module of high-frequency alternating current, it is characterised in that also including for by the high-frequency electronic town
Stream device module output is converted into the output control module of constant output, and there is provided including for the industrial-frequency alternating current of constant output to be turned
Into the dither direct current supply LED high-frequency rectification bridge BD used and the load blocks for loading LED, method includes step：
The industrial-frequency alternating current that circuit is inputted is converted into direct current, and the direct current is converted into high-frequency alternating current；
The output control module is handled high-frequency alternating current circuit output, obtains stable circuit output to the load
Module for power supply, wherein, the load blocks include high-frequency rectification bridge BD and LED, the two ends of the LED and the high-frequency rectification
The two ends of bridge BD outputs are connected respectively.
2. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that
After the high-frequency electronic ballast module is filtered to the direct current, resonance occurs for internal resonance circuit, produces
High-frequency approximation sinusoidal ac.
3. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that the output control mould
Block is high-frequency inductor, the second end of the input of the high-frequency inductor and the inductance coil Tb of the high-frequency electronic ballast module
Connection, the output end of the high-frequency inductor respectively with the second end of the electric capacity C7 in the high-frequency electronic ballast module and described
High-frequency rectification bridge BD first input end connection.
4. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that the output control mould
Block is voltage stabilizing element, and the first end of the voltage stabilizing element is connected with the first end of the high-frequency electronic ballast module, described steady
Pressure element the second end be connected with the first input end of the high-frequency rectification bridge BD, the 3rd end of the voltage stabilizing element with it is described
High-frequency rectification bridge BD the second input connection.
5. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that the output control mould
Block is constant current source component, and the constant current source component includes constant current source chip and resistance R, the resistance R input and the height
Band electronic ballast module and the connection of the first end of constant current source chip, the output end of the resistance R and the constant current source chip
Second end is connected, and the 3rd end of the constant current source chip is connected with the second end of the high-frequency electronic ballast module, the perseverance
4th end of stream source chip is connected with the first input end of the high-frequency rectification bridge BD.
6. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that the work for inputting circuit
Frequency alternating current is converted into direct current, and direct current is changed, and the step of direct current is converted into high-frequency alternating current includes：
The step of EMI filtering is carried out to the industrial-frequency alternating current that circuit is inputted.
7. the method for LED power supply circuits direct current supply according to claim 1, it is characterised in that the output control mould
Block is handled high-frequency alternating current circuit output, obtains stable circuit output to power load modules, wherein, the load
Module includes high-frequency rectification bridge BD and LED, and the two ends of the LED connect respectively with the high-frequency rectification bridge BD two ends exported
The step of connecing includes：
The step of alternating current of stable circuit output is converted into direct current.
8. a kind of LED matrix, including the industrial-frequency alternating current inputted for circuit carries out EMI filtering and by the filtered power frequencies of EMI
Alternating current is converted into the modular converter of direct current, the high-frequency electronic ballast module for direct current to be changed to high-frequency alternating current,
Characterized in that, also including being used to exporting the high-frequency electronic ballast module into the output control module for being converted into constant output
And load blocks, the load blocks by the alternating current of constant output including for changing into the high frequency that direct current supply LED is used
Rectifier bridge BD and LED.
9. LED matrix according to claim 8, it is characterised in that the output control module is described in claim 3
High-frequency inductor in the method for LED power supply circuit direct current supplys, the side of the LED power supply circuit direct current supplys described in claim 4
Appointing in the constant current source component in the method for the LED power supply circuit direct current supplys described in the voltage stabilizing element and claim 5 in method
Meaning one, wherein, the constant current source component includes constant current source chip and resistance R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544483.5A CN107135582A (en) | 2017-07-04 | 2017-07-04 | A kind of method and device of LED power supply circuits direct current supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544483.5A CN107135582A (en) | 2017-07-04 | 2017-07-04 | A kind of method and device of LED power supply circuits direct current supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107135582A true CN107135582A (en) | 2017-09-05 |
Family
ID=59737344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710544483.5A Pending CN107135582A (en) | 2017-07-04 | 2017-07-04 | A kind of method and device of LED power supply circuits direct current supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107135582A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201267047Y (en) * | 2008-08-22 | 2009-07-01 | 桂林灵川县安华电器厂 | Electronic energy-saving fluorescent lamp ballast |
| CN201274600Y (en) * | 2008-04-30 | 2009-07-15 | 林礼承 | Hidden electricity economizer for fluorescent lamp |
| CN201781649U (en) * | 2010-07-23 | 2011-03-30 | 中山市威禾电器制造有限公司 | LED street lamp |
| CN104853473A (en) * | 2014-12-19 | 2015-08-19 | 北京澄通光电股份有限公司 | LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp |
| CN204859724U (en) * | 2015-05-28 | 2015-12-09 | 林丹红 | Starter circuit |
-
2017
- 2017-07-04 CN CN201710544483.5A patent/CN107135582A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201274600Y (en) * | 2008-04-30 | 2009-07-15 | 林礼承 | Hidden electricity economizer for fluorescent lamp |
| CN201267047Y (en) * | 2008-08-22 | 2009-07-01 | 桂林灵川县安华电器厂 | Electronic energy-saving fluorescent lamp ballast |
| CN201781649U (en) * | 2010-07-23 | 2011-03-30 | 中山市威禾电器制造有限公司 | LED street lamp |
| CN104853473A (en) * | 2014-12-19 | 2015-08-19 | 北京澄通光电股份有限公司 | LED fluorescent lamp circuit employing fluorescent lamp electronic ballast for driving and LED fluorescent lamp |
| CN204859724U (en) * | 2015-05-28 | 2015-12-09 | 林丹红 | Starter circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201898450U (en) | Power converter and light-emitting diode (LED) lamp | |
| CN101527983B (en) | White-light LED illumination driving circuit on basis of current-type charge pump | |
| CN201700061U (en) | High-power factor LED power driver | |
| CN101447737B (en) | Constant power output direct current transforming circuit | |
| CN109661072A (en) | LLC resonant converter, LED drive circuit and its control method | |
| WO2019144414A1 (en) | Lamp tube drive circuit | |
| CN109618468A (en) | A kind of LED lamp circuit with intelligent control function | |
| CN206650893U (en) | A kind of Dimmable LED drive circuit of Alternating Current Power Supply | |
| CN208128575U (en) | The LED lamp of input power automatic adjustment | |
| CN206498569U (en) | A kind of high-power LED driving power source | |
| CN209402781U (en) | A kind of ultra-thin photovoltaic intelligent dimming power control circuit | |
| CN201094166Y (en) | LED drive circuit | |
| CN101415283B (en) | Universal power conditioner for lighting lamp | |
| CN207011042U (en) | A kind of controllable silicon light modulation automatic color regulating temperature power supply | |
| CN107135582A (en) | A kind of method and device of LED power supply circuits direct current supply | |
| CN206498566U (en) | One kind splits isolation drive power supply | |
| CN206559675U (en) | A kind of LED dimming driving circuits | |
| CN108521694B (en) | LED half-bridge circuit with feedback variable-frequency constant-current drive | |
| CN201403243Y (en) | Cold-cathode light-adjusting lamp | |
| CN202210885U (en) | Dimming drive power for LED lighting | |
| CN201830535U (en) | Electronic ballast and energy-saving lamp | |
| CN203872381U (en) | LED and fluorescent lamp ballast compatible interface circuit | |
| CN201398253Y (en) | White light LED illumination driving circuit based on current mode charge pump | |
| CN206042452U (en) | LED power supply system | |
| CN205142637U (en) | Electronic ballast circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170905 |
|
| RJ01 | Rejection of invention patent application after publication |