CN108566699A - A kind of LED drive circuit device of automobile-used wide range input - Google Patents
A kind of LED drive circuit device of automobile-used wide range input Download PDFInfo
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- CN108566699A CN108566699A CN201810046256.4A CN201810046256A CN108566699A CN 108566699 A CN108566699 A CN 108566699A CN 201810046256 A CN201810046256 A CN 201810046256A CN 108566699 A CN108566699 A CN 108566699A
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- resistance
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- drive circuit
- diode
- sofe switch
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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]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of LED drive circuit device of automobile-used wide range input, including shell, radiator fan, circuit board, ZVS Sofe Switch starting circuit, driving circuit, ZVS Sofe Switch starting circuit, driving circuit installation are on circuit boards, circuit board is mounted on lower part in shell, radiator fan is mounted on the round hole of shell upper end, and accumulator on ZVS Sofe Switch starting circuit power input both ends and vehicle, driving circuit are connected between LED light group, radiator fan by conducting wire respectively on vehicle.The present invention can effectively distribute the heat generated in ZVS Sofe Switch starting circuit, drive circuit works.And using conversion regime of the ZVS soft switch techniques as power supply, existing LED lamp for vehicles drive circuit board is overcome, the PWM Switching Power Supplies used are by the work of hard switching pattern, the drawbacks of causing LED lamp drive circuit plate integrally to consume energy.Based on above-mentioned, so the application prospect that the present invention has had.
Description
Technical field
The present invention relates to power-supply device field, especially a kind of LED drive circuit device of automobile-used wide range input.
Background technology
LED light is widely used in lighting area since energy saving, brightness is high, service life is long.Vehicle is due on the way going
The illumination for needing high brightness is sailed, therefore the headlamp power of LED lamp bead composition that vehicle uses is often very big, in this way, giving LED light
Drive circuit board propose very high request, not only drive circuit board will export the driving current of enough power, but also protect
It demonstrate,proves itself and saves electric energy, and reach feature with long service life.Existing LED lamp for vehicles drive circuit board directly and vehicle on circuit
Together, circuit board is mounted in subassembly wrapper plate integrated installation on vehicle, and since structure is limited, LED lamp drive circuit plate does not have
Good heat sinking function, therefore the probability to break down in use is larger;Existing LED lamp for vehicles drive circuit board, uses
PWM Switching Power Supplies work by hard switching pattern, and when work due to switching tube, ON/OFF declines in voltage in the process/rise shape
State and electric current rise/fall waveform have overlapping, thus switching loss is larger, and LED lamp drive circuit plate is caused integrally to consume energy.
Invention content
In order to overcome various drawbacks existing for existing automobile-used LED drive circuit board, the present invention provides use ZVS Sofe Switch
Conversion regime of the technology as power supply so that the circuit efficiency of whole drive circuit board has reached 96% or more, using aluminum shell
Body combination radiator fan effectively radiates to whole drive circuit board, reduces a kind of vehicle of whole driving circuit version failure rate
With the LED drive circuit device of wide range input.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of LED drive circuit device of automobile-used wide range input, it is characterised in that including shell, radiator fan,
Circuit board, ZVS Sofe Switch starting circuit, driving circuit, ZVS Sofe Switch starting circuit, driving circuit installation are on circuit boards, electric
Road plate is mounted on lower part in shell, and there are one round holes for the upper end of shell, and there are one openings for each side tool of shell, dissipate
Hot-air fan is mounted on the round hole of shell upper end, accumulator positive on ZVS Sofe Switch starting circuit power input both ends and vehicle
Negative the two poles of the earth are connected by conducting wire respectively, the power supply output both ends of ZVS Sofe Switch starting circuits and driving circuit power input both ends
It is connected respectively by conducting wire, driving circuit power supply exports LED light group positive and negative polarities power input, radiation air on both ends and vehicle
Fan power input both ends are connected by conducting wire respectively.
The shell is aluminum material, is process by a monoblock aluminium block.
The ZVS Sofe Switch starting circuit includes inductance, resistance, zener diode, diode, polarity free capacitor, high frequency
Transformer, field-effect tube, are connected by circuit board wiring therebetween, inductance one end and first resistance one end, second resistance one
End connection, the inductance other end connects with second terminals of high frequency transformer armature winding, first resistance other end and the
Two diode cathodes, third resistance one end, first zener diode cathode, first fet gate connection, the
Two diode cathodes are connected with polarity free capacitor one end, the third resistance other end and the 4th resistance one end, first field
Effect pipe source electrode, second field-effect tube source electrode connection, first zener diode anode and second zener diode anode
Connection, second resistance other end and the 4th resistance other end, second zener diode cathode, second field-effect tube grid
Pole, first diode cathode connection, first diode cathode and the polarity free capacitor other end, first field-effect tube leakage
Pole, the first terminals connection of high frequency transformer armature winding, second FET drain and high frequency transformer armature winding
Third terminals connect.
The driving circuit includes rectifier bridge stack, electrolytic capacitor, polarity free capacitor, resistance, adjustable resistance, bilateral diode
And bidirectional triode thyristor, it is connected therebetween by circuit board wiring, rectifier bridge stack model is KBPC2510, rectifier bridge stack second power supply
2 foot of input terminal and first resistance one end, the connection of the second main electrode of bidirectional triode thyristor, first resistance other end and adjustable resistance
One end connects, and the adjustable resistance other end connect with polarity free capacitor one end, second resistance one end, second resistance other end with
Bilateral diode one end connects, and the bilateral diode other end connect with bidirectional triode thyristor control pole, the polarity free capacitor other end with
The first main electrode of bidirectional triode thyristor connects, electrolytic capacitor anode, cathode respectively with 4 foot of rectifier bridge stack cathode power supply output end, negative
Power output end 3 foot in pole connects.
Present invention has the advantages that:The present invention dissipates whole drive circuit board using aluminium casing combination radiator fan
Heat can effectively distribute the heat generated in ZVS Sofe Switch starting circuit, drive circuit works.And use ZVS soft switch techniques
As the conversion regime of power supply, under the effect of ZVS Sofe Switch starting circuit support circuits, the source voltage electricity of two field-effect tube
Stream resonance zero-acrross ing moment can realize effectively and turns on and off, and it is small that zero-voltage zero-current realizes switching loss, switching voltage/electric current
Waveform does not overlap so that the circuit efficiency of whole drive circuit board has reached 96%, overcomes existing LED lamp for vehicles driving electricity
Road plate, the PWM Switching Power Supplies used work by hard switching pattern, when being worked due to switching tube, during ON/OFF under voltage
Drop/propradation and electric current rise/fall waveform have overlapping, and switching loss is larger, and LED lamp drive circuit plate is caused integrally to consume
The drawbacks of energy.Based on above-mentioned, so the application prospect that the present invention has had.
Description of the drawings
The present invention is described further below in conjunction with drawings and examples.
Fig. 1 is schematic structural view of the invention.
Fig. 2 is circuit diagram of the present invention.
Specific implementation mode
Shown in Fig. 1, a kind of LED drive circuit device of automobile-used wide range input, including shell 1, radiator fan
2, circuit board 3, ZVS Sofe Switch starting circuit 4, driving circuit 5, ZVS Sofe Switch starting circuit 4, driving circuit 5 are mounted on circuit
On plate 3, circuit board 3 is mounted on lower part in shell 1, and there are one round hole, each side tools of shell 1 for the upper end of shell 1
There are one the 1-1 that is open, radiator fan 2 is mounted on 1 upper end round hole of shell, 4 power input two of ZVS Sofe Switch starting circuit
End is connected by conducting wire respectively with accumulator positive and negative polarities on vehicle, the power supply output both ends of ZVS Sofe Switch starting circuit 4 and drive
Dynamic 2 power input both ends of circuit are connected by conducting wire respectively, and it is positive and negative that 2 power supply of driving circuit exports LED light group on both ends and vehicle
The two poles of the earth power input, 2 power input both ends of radiator fan are connected by conducting wire respectively.Shell 1 is aluminum material, by a monoblock
Aluminium block is process.
Shown in Fig. 1, the present invention combines fan Hot-air fan 2 to radiate whole drive circuit board using aluminium casing 1, energy
The heat generated during effectively ZVS Sofe Switch starting circuit 4, driving circuit 5 work distributes.And made using ZVS soft switch techniques
For the conversion regime of power supply, under the effect of 4 support circuit of ZVS Sofe Switch starting circuit, the source voltage electricity of two field-effect tube
Stream resonance zero-acrross ing moment can realize effectively and turns on and off, and it is small that zero-voltage zero-current realizes switching loss, switching voltage/electric current
Waveform does not overlap so that the circuit efficiency of whole drive circuit board has reached 96%, overcomes existing LED lamp for vehicles driving electricity
Road plate, the PWM Switching Power Supplies used work by hard switching pattern, when being worked due to switching tube, during ON/OFF under voltage
Drop/propradation and electric current rise/fall waveform have overlapping, and switching loss is larger, and LED lamp drive circuit plate is caused integrally to consume
The drawbacks of energy.Based on above-mentioned, so the application prospect that the present invention has had.
Shown in Fig. 2, ZVS Sofe Switch starting circuits include inductance L, resistance R1, R2, R3, R4, zener diode VZ1,
VZ2, diode VD1, VD2, polarity free capacitor C1, high frequency transformer T, field-effect tube Q1, Q2 are connected by circuit board wiring therebetween
It connects, the one end inductance L is connected with first one end resistance R1, second one end resistance R2, the inductance L other ends and high frequency transformer T
Second terminals of armature winding connect, first resistance R1 other end and second diode VD2 anodes, third resistance
The one end R3, first zener diode VZ1 cathode, the connection of first field-effect tube Q1 grid, second diode VD2 cathode and
The one end polarity free capacitor C1 connects, the third resistance R3 other ends and the 4th one end resistance R4, first source field-effect tube Q1
Pole, second field-effect tube Q2 source electrodes connection, first zener diode VZ1 anode and second zener diode VZ2 anode
Connection, second resistance R2 other end and the 4th resistance R4 other end, second zener diode VZ2 cathode, second field
Effect pipe Q1 grids, first diode VD1 anodes connection, first diode VD1 cathode and the polarity free capacitor C1 other ends,
First first field-effect tube Q1 drain electrode, high frequency transformer T armature windings terminals connection, second field-effect tube Q2 drain electrode
It is connected with high frequency transformer T armature winding third terminals.Driving circuit includes rectifier bridge stack IC, electrolytic capacitor C3, electrodeless
Property capacitance C2, resistance R5, adjustable resistance RP, bilateral diode ST and bidirectional triode thyristor VS, are connected by circuit board wiring therebetween,
Rectifier bridge stack IC models are KBPC2510,2 foot of rectifier bridge stack IC second power supplies input terminal and first one end resistance R5, two-way
The second main electrodes of silicon-controlled VS connect, and first resistance R5 other end is connected with the one end adjustable resistance RP, and adjustable resistance RP is another
End is connected with the one end polarity free capacitor C2, second one end resistance R6, second resistance R6 other end and bilateral diode ST mono-
End connection, the bilateral diode ST other ends connect with bidirectional triode thyristor VS control poles, the polarity free capacitor C2 other ends and it is two-way can
Control the connection of silicon the first main electrodes of VS, electrolytic capacitor C3 anode, cathode respectively with 4 foot of rectifier bridge stack IC cathode power supplies output end, negative
Power output end 3 foot in pole connects.
Shown in Fig. 2, on the ZVS Sofe Switch starting circuit power inputs both ends inductance L other ends, the one end resistance R4 and vehicle
Accumulator positive and negative polarities are connected by conducting wire respectively, time of the power supply output both ends high frequency transformer T of ZVS Sofe Switch starting circuits
Grade winding both ends and 1 foot of driving circuit power input both ends rectifier bridge stack power input and the first main electrodes of bidirectional triode thyristor VS
Connected respectively by conducting wire, driving circuit power supply export both ends electrolytic capacitor C3 anode and cathode vehicle on LED light group LEDN just
Negative the two poles of the earth power input, radiator fan M power inputs both ends are connected by conducting wire respectively.
Shown in Fig. 2, in ZVS Sofe Switch starting circuits, by inductance L, resistance R1, R2, R3, R4 and diode VD1, VD2
Resonance circuit is formed, accumulator out-put supply is carried out voltage stabilizing output 12V DC power supply and entered by two zener diodes VZ1, VZ2
The grid of two field-effect tube Q1, Q2 is on off state, two field-effect tube Q1, Q2 after two field-effect tube Q1, Q2 work
Drain electrode output AC power source enter the armature winding of high frequency transformer T, under resonance circuit effect, two field-effect tube Q1,
The source voltage current resonance zero-acrross ing moment of Q2, which can be realized effectively, to be turned on and off, to realize two field-effect tube Q1, Q2
Switching loss is small, and switching voltage/current waveform does not overlap so that and the circuit efficiency of whole drive circuit board has reached 96%, gram
Existing LED lamp for vehicles drive circuit board is taken, the PWM Switching Power Supplies used work by hard switching pattern, due to switching plumber
Have in voltage decline/propradation and electric current rise/fall waveform overlapping when making, during ON/OFF, switching loss is larger,
The drawbacks of causing LED lamp drive circuit plate integrally to consume energy.After high frequency transformer T armature winding input ac powers, secondary windings
It generates induced voltage and enters driving circuit.In driving circuit:By adjustable resistance RP, polarity free capacitor C2, resistance R5, R6 and two-way
Diac ST forms phase-shift trigger circuit, and when 220V AC powers are certain half cycle, electric current is through adjustable resistance RP, resistance R1
Charge to polarity free capacitor C2, polarity free capacitor 2C both end voltages rise, when ceramic disc capacitor C2 both end voltages rise above it is double
To diac ST trigger voltage value when, bidirectional trigger diode ST and bidirectional triode thyristor VS ability successive conductives are then double
End to silicon-controlled VS when AC supply voltage is in zero, the Trigger Angle of bidirectional triode thyristor VS by adjustable resistance RP resistance values,
Resistance R1 resistance values and ceramic disc capacitor C2 capacitance products determine, adjust the knob of adjustable resistance RP, adjustable resistance RP resistance values occur
The Trigger Angle for changing bidirectional triode thyristor VS is equivalent to when variation, to change the 1 and 2 foot voltages for being input to rectifier bridge stack IC
Size, that is, change the purpose of the 3 and 4 foot output voltage sizes of rectifier bridge stack IC, the 3 and 4 feet output of rectifier bridge stack IC
Power supply after electrolytic capacitor C3 filtering, to be converted to DC power supply be LED light group LEDN and radiator fan M power supplies on vehicle, in
It is that LED light group LEDN obtains electroluminescence, and radiator fan M work is heat dissipation for circuit board, by adjusting the obstructed resistance values of RP, can be changed
The 3 and 4 foot output voltage sizes of rectifier bridge stack IC, to for different operating voltage on vehicle LED light group power supply (than if any
Vehicle LED light group operating voltage is 24V, and when work is left at direct current 4.2V by the voltage stabilizing of 24V voltage step-downs by the circuit board of itself
The right side connects adjustable resistance RP resistance values then should just adjust this moment, and it is direct current 24V to make the 3 and 4 foot output voltages of rectifier bridge stack IC,
Than if any vehicle LED light group operating voltage be 12V, by the circuit board of itself by 12V voltage step-down voltage stabilizings Cheng Zhi when work
4.2V or so is flowed, adjustable resistance RP resistance values are connect then should just adjust this moment, makes the 3 and 4 foot output voltages of rectifier bridge stack IC be
Direct current 12V;In practical application, the periphery of adjustable resistance RP is labeled with voltage digital, the adjusting rotation of adjustable resistance PR on circuit board
For button adjusting section at relevant voltage number, the 3 and 4 foot output voltages of rectifier bridge stack IC are exactly consistent at relevant voltage number), it fits
It is wider with range.The power input of ZVS Sofe Switch starting circuits can be worked normally in voltage 12V to 48V.
Shown in Fig. 2, in ZVS Sofe Switch starting circuits:Inductance L specifications are 200 μ H;Resistance R1, R2, R3, R4 resistance value point
It is not 470 Ω, 470 Ω, 10K, 10K;Zener diode VZ1, VZ2 are 12V zener diodes;Diode VD1, VD2 model is
1N4007;Polarity free capacitor C1 specifications are 0.68 μ F;Field-effect tube Q1, Q2 model is IRFP250.In driving circuit:Electrolysis electricity
It is 470 μ F/25V to hold C3 specifications;Polarity free capacitor C2 specifications are 0.1 μ F;Resistance R5 resistance values are 1K;Adjustable resistance RP models are
270K;Bidirectional triode thyristor VS models BTB26;Bilateral diode model is DB3.
It should be noted that the present embodiment is preferred embodiments of the present invention, it is not intended to limit the invention, it is all of the invention former
Any modification, equivalent substitution, improvement and etc. then are done in range, should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of LED drive circuit device of automobile-used wide range input, it is characterised in that including shell, radiator fan, electricity
Road plate, ZVS Sofe Switch starting circuit, driving circuit, ZVS Sofe Switch starting circuit, driving circuit are installed on circuit boards, circuit
Plate is mounted on lower part in shell, and radiator fan is mounted on the round hole of shell upper end, ZVS Sofe Switch starting circuit power inputs
Both ends are connected by conducting wire respectively with accumulator positive and negative polarities on vehicle, the power supplys of ZVS Sofe Switch starting circuits output both ends and
Driving circuit power input both ends are connected by conducting wire respectively, and it is positive and negative that driving circuit power supply exports LED light group on both ends and vehicle
The two poles of the earth power input, radiator fan power input both ends are connected by conducting wire respectively.
2. a kind of LED drive circuit device of automobile-used wide range input according to claim 1, it is characterised in that shell
Body is aluminum material, is process by a monoblock aluminium block.
3. a kind of LED drive circuit device of automobile-used wide range input according to claim 1, it is characterised in that
ZVS Sofe Switch starting circuits include inductance, resistance, zener diode, diode, polarity free capacitor, high frequency transformer, field-effect
Pipe, is connected by circuit board wiring, inductance one end is connected with first resistance one end, second resistance one end, and inductance is another therebetween
One end is connected with second terminals of high frequency transformer armature winding, and first resistance other end and second diode are just
Pole, third resistance one end, first zener diode cathode, first fet gate connection, second diode are negative
Pole is connected with polarity free capacitor one end, the third resistance other end and the 4th resistance one end, first field-effect tube source electrode,
Two field-effect tube source electrode connections, first zener diode anode and second zener diode anode connection, second electricity
Hinder the other end and the 4th resistance other end, second zener diode cathode, second fet gate, first two pole
Pipe anode connects, at the beginning of first diode cathode and the polarity free capacitor other end, first FET drain, high frequency transformer
The first terminals connection of grade winding, second FET drain and high frequency transformer armature winding third terminals connect
It connects.
4. a kind of LED drive circuit device of automobile-used wide range input according to claim 1, it is characterised in that drive
Dynamic circuit include rectifier bridge stack, electrolytic capacitor, polarity free capacitor, resistance, adjustable resistance, bilateral diode and bidirectional triode thyristor,
It is connected therebetween by circuit board wiring, rectifier bridge stack model is KBPC2510,2 foot of rectifier bridge stack second power supply input terminal and
One resistance one end, the connection of the second main electrode of bidirectional triode thyristor, first resistance other end is connected with adjustable resistance one end, adjustable
The resistance other end is connected with polarity free capacitor one end, second resistance one end, second resistance other end and bilateral diode one
End connection, the bilateral diode other end connects with bidirectional triode thyristor control pole, the polarity free capacitor other end and bidirectional triode thyristor the
One main electrode connect, electrolytic capacitor anode, cathode respectively with 4 foot of rectifier bridge stack cathode power supply output end, negative power supply output end 3
Foot connects.
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