CN207460553U - It is a kind of to drive the constant voltage source of LED light strip and apply its LED light source - Google Patents
It is a kind of to drive the constant voltage source of LED light strip and apply its LED light source Download PDFInfo
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- CN207460553U CN207460553U CN201721558547.9U CN201721558547U CN207460553U CN 207460553 U CN207460553 U CN 207460553U CN 201721558547 U CN201721558547 U CN 201721558547U CN 207460553 U CN207460553 U CN 207460553U
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Abstract
The constant voltage source of LED light strip is driven the utility model discloses a kind of and using its LED light source,The constant voltage source of the driving LED light strip includes current rectifying and wave filtering circuit,On-off circuit,Accumulator,Filter circuit,Regulator circuit and control circuit,Current rectifying and wave filtering circuit input terminal is connected with mains input power,The output terminal of current rectifying and wave filtering circuit controls the work of accumulator by on-off circuit,The output terminal of accumulator is also connected with filter circuit and stable direct-current working volts is provided for LED light strip,Wherein,Contain output voltage sample circuit inside regulator circuit,Signal is sent to control unit by output voltage sample circuit,Control circuit is connected by the control terminal of one drive circuit and on-off circuit,The input voltage of the mains input power is AC220V ± 20V,The output voltage of filter circuit is DC110V ± 10V.The constant voltage source of the driving LED light strip is simple in structure, compensates for the omission in market.
Description
Technical field
The constant voltage source of LED light strip is driven the utility model is related to a kind of and using its LED light source.
Background technology
As shown in Figure 1, Figure 2, Figure 3 shows, the LED unit that can work independently on the basis of long 1 meter of LED light strip on the market at present
Circuit includes 30 LED parallel units and several divider resistances and is in series, each LED parallel units have by two or two with
The advantages of upper LED is composed in parallel, this LED light strip will not be caused when the wherein LED in LED parallel units breaks down
Entire LED unit circuit, which does not work, loses product function, the operation is stable；The drawback is that LED unit loop power transformation efficiency is low.It is defeated
Enter the electric energy of light bar by 220V voltage-drop loadings in LED product, and actual LED light source only needs 90V operating voltages that (each LED is simultaneously
The pressure drop of receipts or other documents in duplicate member is 3V, and 30 LED parallel units divide 90V), remaining 130V voltages are by divider resistance by extra electricity
It can be consumed in a manner of changing into thermal energy, actually energy design loses, and product temperature is caused to raise the lost of life.Such LED
Element loop, light efficiency is low, and luminous flux is low, and industry is referred to as double low.
And the constant voltage source of common driving LED on the market, output voltage mostly in DC6V between DC24V, in circuit
On mostly using isolated transforming circuit, isolated transforming circuit includes current rectifying and wave filtering circuit, connects with rectification filter circuit output end
Reduction voltage circuit, the regulator circuit being connected with reduction voltage circuit and control circuit are connect, controls cut-offfing for reduction voltage circuit described in chip controls.
The reduction voltage circuit circuit is divided into as a variety of isolated decompression circuits such as normal shock circuit, flyback circuit, LLC circuits, but all
Reduction voltage circuit is both needed to carry out electrical isolation using transformer, but in this LED driving constant voltage sources transformer there are volume it is big, rise
Wen Gao, control circuit there are complex circuit, it is of high cost the problems such as.Even if this kind of constant voltage source improves the output electricity of transformer
Pressure is also not suitable for for driving high-voltage LED light bar common on the market.
Therefore, it is necessary to develop a kind of LED unit circuit that can work independently on the basis of long 1 meter of LED light strip
Constant voltage source, to improve light efficiency and luminous flux.
Utility model content
One purpose of the utility model is to provide a kind of constant pressure electricity of driving LED light strip suitable for high-voltage LED light bar
Source makes up the omission in market.
Another purpose of the utility model is to provide LED light source, is the constant voltage source of 110V ± 10V using output voltage
With the combination of the LED light strip after improvement, the purpose for improving light efficiency and luminous flux is realized.
What the technical solution of the utility model was realized in：
First purpose of the utility model is to provide a kind of constant voltage source for driving LED light strip, including rectifying and wave-filtering electricity
Road, on-off circuit, accumulator, filter circuit, regulator circuit and control circuit, current rectifying and wave filtering circuit input terminal and mains
Input power connects, and the output terminal of current rectifying and wave filtering circuit controls the work of accumulator by on-off circuit, accumulator it is defeated
Outlet is also connected with filter circuit and provides stable direct-current working volts for LED light strip, the output terminal of the filter circuit also with institute
State regulator circuit connection, it is characterised in that：It will containing output voltage sample circuit, output voltage sample circuit inside regulator circuit
Signal is sent to control circuit, and control circuit is connected by the control terminal of one drive circuit and on-off circuit, and the mains are defeated
Enter the input voltage of power supply for AC220V ± 20V, the output voltage of the accumulator is DC110V ± 10V.
Regulator circuit described above include resistance R2, resistance R3, voltage-stabiliser tube D2 and optocoupler U2, voltage-stabiliser tube D2, resistance R3 and
Two output terminals that accumulator is connected to after resistance R2 series connection play the role of stable output end voltage；Two letters of optocoupler U2
Number input terminal is connected in parallel on resistance R3 and forms output voltage sample circuit, and signal is sent to control by two signal output parts of optocoupler U2
Circuit processed.
Accumulator described above includes diode D1, inductance N1, and the filter circuit includes capacitance C1, rectifying and wave-filtering electricity
The negative output terminal on road is connected to diode D1 anodes, the positive output end connection diode D1 of current rectifying and wave filtering circuit by on-off circuit
Cathode and capacitance C1 anodes, connect the inductance N1 between diode D1 anodes and capacitance C1 cathode.
Control circuit described above includes starting circuit and control unit, and the circuit that starts controls described control unit
Start, the startup circuit couple with the accumulator, and startup circuit includes coil N2, voltage-stabiliser tube D4 and resistance R5, described
Coil N2 is coupled with the inductance N1 forms mutual inductor on an iron core, coil N2 one end is connected with ground terminal, and coil N2's is another
End is connected with voltage-stabiliser tube D4 anodes, and the voltage-stabiliser tube D4 cathode are connected by the resistance R5 with described control unit.
On-off circuit described above includes switching tube Q1, and the control unit is control chip U1, the switching tube Q1
D poles be connected with the current rectifying and wave filtering circuit negative output terminal, the S poles of the switching tube Q1 are connected with the anode of diode D1, institute
The G poles for stating switching tube Q1 are connected by the driving circuit with the DRV feet of the control chip U1, and the driving circuit includes three
Pole pipe Q2, diode D3 and resistance R4, anode and the triode of the G poles of the switching tube Q1 with the diode D3
The e poles connection of Q2, the b poles of the triode Q2 are connected with one end of the resistance R4, the other end of the resistance R4 with it is described
The DRV feet connection of the cathode of diode D3 and the control chip U1, the c poles of the triode Q2 are with the control chip U1's
VCC feet connect.
It is above-mentioned that current-limiting protection circuit, the current-limiting protection circuit are also associated between current rectifying and wave filtering circuit and on-off circuit
The current rectifying and wave filtering circuit negative output terminal and the switch are connected to including resistance R6, resistance R7 and resistance R8, the resistance R6
Between the D poles of Q1, the resistance R7 is in parallel with the resistance R6, and the node between the D poles of resistance R6 and the switch Q1 passes through
Resistance R8 is connected with the CS feet of the control chip U1.
Current rectifying and wave filtering circuit described above include rectifier bridge BR1, capacitance C3 and resistance R9, the positive and negative anodes of the capacitance C3 with
It is connected to after the resistance R9 parallel connections between the positive-negative output end of the rectifier bridge BR1.
Second purpose of the utility model is to provide a kind of LED light source, the perseverance including LED light strip and driving LED light strip
Voltage source, the LED unit circuit that the LED light strip can work independently by several are formed in parallel, it is described it is each can be independent
The LED unit circuit of work is in series by several LED parallel units and at least one divider resistance, each LED and receipts or other documents in duplicate
Member is formed in parallel by least 2 LED, the LED unit circuit that each of which can work independently account for light bar length range be 0.9 meter extremely
1.1 meters, the quantitative range for the LED parallel units that the LED unit circuit that each can work independently includes is 18 to 36, design
The voltage Vi at the both ends in the LED unit circuit that each can work independently is 110V ± 10V, each LED parallel units are serially connected
The summation VR for being serially connected to obtain both end voltage to the summation VLED of both end voltage and each divider resistance meets：VLED+VR=
Vi,It is characterized in that：The constant voltage source of driving LED light strip is the perseverance of driving LED light strip described above
Voltage source.
A kind of LED drivings constant voltage source described in the utility model, compared with prior art, has the advantage that：
1st, the input voltage of the constant voltage source is AC220V ± 20V, and the output voltage is DC110V ± 10V, is made up
The blank of constant voltage source in the market without driving high-voltage LED light bar；
2nd, the work of the on-off circuit control accumulator, regulator circuit the inside are defeated containing output voltage sample circuit
Go out voltage sample circuit and signal is sent to control circuit, control circuit is connected by the control terminal of one drive circuit and on-off circuit
It connects, on-off circuit-accumulator-filter circuit-regulator circuit-control circuit forms a closed loop backfeed loop, makes constant pressure electric
The output voltage in source is more stablized；
3rd, the switch is connected between the negative output terminal of current rectifying and wave filtering circuit and accumulator, makes the reflection of accumulator
More rapidly, work is more stable, and accumulator is simple in structure, at low cost, small；
4th, the startup circuit is coupled with the accumulator, and startup line construction is simple, reaction is fast；
5th, the constant voltage source is filtered by current rectifying and wave filtering circuit and filter circuit the two poles of the earth, and the voltage of output is more steady；
6th, LED light source, the constant voltage source including LED light strip and driving LED light strip, the LED light strip are ensureing cost base
Under the premise of this is constant and stable and reliable in work, reduces ratios of the summation VR to Vi of divider resistance both end voltage, reduce useless
Heat energy loss, improve electro-optical efficiency, add the luminous flux of LED light strip, achieved the purpose that energy efficiency.
Description of the drawings
Fig. 1 is the structure diagram of LED light strip in the prior art；
Fig. 2 is the circuit block diagram of LED light strip in the prior art；
Fig. 3 is the circuit diagram in the LED unit circuit that can work independently of LED light strip in the prior art；
Fig. 4 is the block diagram of the constant voltage source for the driving LED light strip that the utility model embodiment one provides；
Fig. 5 is the circuit diagram of the constant voltage source for the driving LED light strip that the utility model embodiment one provides；
The structure diagram for the LED light source that Fig. 6 the utility model embodiments two provide；
Fig. 7 is the circuit block diagram for the LED light source that the utility model embodiment two provides；
Fig. 8 is the circuit diagram in LED unit circuit in the LED light source that the utility model embodiment two provides.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to
The scope of the utility model protection.
Embodiment one：
As shown in Figure 4 and Figure 5, a kind of constant voltage source for driving LED light strip is present embodiments provided, including rectifying and wave-filtering electricity
Road 1, on-off circuit 2, accumulator 3, filter circuit 4, regulator circuit 8 and control circuit 5,1 input terminal of current rectifying and wave filtering circuit with
Mains input power connects, and the output terminal of current rectifying and wave filtering circuit 1 controls the work of accumulator 3 by on-off circuit 2, storage
The output terminal of energy circuit 3 is also connected with filter circuit 4 and stable direct-current working volts is provided for LED light strip, the filter circuit 4
Output terminal is also connected with the regulator circuit 8, wherein, output voltage sample circuit 81, output voltage are contained in 8 the inside of regulator circuit
Signal is sent to control circuit 5 by sample circuit 81, and control circuit 5 is connected by the control terminal of one drive circuit 6 and on-off circuit 2
It connects, the input voltage of the mains input power is AC220V ± 20V, and the output voltage of the filter circuit 4 is
DC110V±10V。
Regulator circuit 4 described above include resistance R2, resistance R3, voltage-stabiliser tube D2 and optocoupler U2, voltage-stabiliser tube D2, resistance R3 and
Two output terminals that accumulator 3 is connected to after resistance R2 series connection play the role of stable output end voltage；Two of optocoupler U2
Signal input part is connected in parallel on resistance R3 and forms output voltage sample circuit 41, and two signal output parts of optocoupler U2 send signal
To control circuit 5.The voltage-stabiliser tube D2 can be that two voltage-stabiliser tubes are in series.
Accumulator 3 described above includes diode D1, inductance N1, and the filter circuit 4 includes capacitance C1, rectifying and wave-filtering
The negative output terminal of circuit 1 is connected to diode D1 anodes, the positive output end connection two of current rectifying and wave filtering circuit 1 by on-off circuit 2
The cathode of pole pipe D1 and capacitance C1 anodes, connect the inductance N1 between diode D1 anodes and capacitance C1 cathode.
Control circuit 5 described above includes starting circuit 52 and control unit 51, and the startup circuit 52 controls the control
The startup of unit 51 processed, the startup circuit 52 are coupled with the accumulator 3, and starting circuit 52 includes coil N2, voltage-stabiliser tube
D4 and resistance R5, the coil N2 and the inductance N1 are coupled and mutual inductor are formed on an iron core, and coil N2 one end connects with ground terminal
It connects, the other end of coil N2 is connected with voltage-stabiliser tube D4 anodes, and the voltage-stabiliser tube D4 cathode pass through the resistance R5 and the control
Unit 51 connects.
On-off circuit 3 described above includes switching tube Q1, and the control unit 51 is to control chip U1, the switching tube
The D poles of Q1 are connected with 1 negative output terminal of current rectifying and wave filtering circuit, and the S poles of the switching tube Q1 are connected with the anode of diode D1,
The G poles of the switching tube Q1 are connected by the driving circuit 6 with the DRV feet of the control chip U1, and the driving circuit 6 wraps
Include triode Q2, diode D3 and resistance R4, the G poles of the switching tube Q1 and the anode and described three of the diode D3
The e poles connection of grade pipe Q2, the b poles of the triode Q2 are connected with one end of the resistance R4, the other end of the resistance R4 and
The DRV feet connection of the cathode of the diode D3 and the control chip U1, the c poles of the triode Q2 and the control chip
The VCC feet connection of U1.
It is above-mentioned that current-limiting protection circuit 7, the current-limiting protection are also associated between current rectifying and wave filtering circuit 1 and on-off circuit 2
Circuit 7 includes resistance R6, resistance R7 and resistance R8, the resistance R6 are connected to 1 negative output terminal of current rectifying and wave filtering circuit and institute
Between the D poles for stating switch Q1, the resistance R7 is in parallel with the resistance R6, the section between the D poles of resistance R6 and the switch Q1
Point is connected by resistance R8 with the CS feet of the control chip U1.
Current-limiting protection circuit 7 described above include the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8, the described 6th
Resistance R6 is connected between the D poles of 1 negative output terminal of current rectifying and wave filtering circuit and the switch Q1, the 7th resistance R7 and institute
The 6th resistance R6 parallel connections are stated, the node between the 6th resistance R6 and the D poles of the switch Q1 passes through the 8th resistance R8 and institute
State the CS feet connection of control chip U1.
Current rectifying and wave filtering circuit 1 described above includes rectifier bridge BR1, the 3rd capacitance C3 and the 9th resistance R9, the 3rd electricity
Hold C3 positive and negative anodes it is in parallel with the 9th resistance R9 after be connected between the positive-negative output end of the rectifier bridge BR1.
First resistor R1 is connected between the positive output end and negative output terminal of accumulator 3 described above, when the constant pressure
During power supply zero load, the first resistor R1 is beneficial to the electricity of release inductance N1 and capacitance C1 as fictitious load.
Embodiment two：
As shown in Figure 6 to 8, a kind of LED light source is present embodiments provided, the perseverance including LED light strip and driving LED light strip
Voltage source, the LED unit circuit 90 that the LED light strip 9 can work independently by several are formed in parallel, it is described it is each can be only
The LED unit circuit 90 of vertical work is in series by several LED parallel units 91 and at least one divider resistance 92, each
LED parallel units 91 are formed in parallel by least 2 LED, and the LED unit circuit 90 that each of which can work independently accounts for light bar length
Scope is 0.9 meter to 1.1 meters, the quantitative range for the LED parallel units 91 that the LED unit circuit 90 that each can work independently includes
It it is 18 to 36, the voltage Vi for designing the both ends in the LED unit circuit 90 that each can work independently is 110V ± 10V, each LED
Parallel units are serially connected to obtain the summation VLED of both end voltage and each divider resistance is serially connected to obtain the total of both end voltage
Meet with VR：VLED+VR=Vi, It is characterized in that：The constant voltage source for driving LED light strip is embodiment
The constant voltage source of the one driving LED light strip.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (8)
1. it is a kind of drive LED light strip constant voltage source, including current rectifying and wave filtering circuit, on-off circuit, accumulator, filter circuit,
Regulator circuit and control circuit, current rectifying and wave filtering circuit input terminal are connected with mains input power, current rectifying and wave filtering circuit it is defeated
Outlet controls the work of accumulator by on-off circuit, and the output terminal of accumulator is also connected with the filter circuit as LED light
With stable direct-current working volts are provided, the output terminal of the filter circuit is also connected with the regulator circuit, it is characterised in that：
Signal is sent to control unit, control circuit containing output voltage sample circuit, output voltage sample circuit inside regulator circuit
Connected by the control terminal of one drive circuit and on-off circuit, the input voltage of the mains input power for AC220V ±
20V, the output voltage of the filter circuit is DC110V ± 10V.
2. a kind of constant voltage source for driving LED light strip according to claim 1, it is characterised in that：The regulator circuit bag
Resistance R2, resistance R3, voltage-stabiliser tube D2 and optocoupler U2 are included, accumulator is connected to after voltage-stabiliser tube D2, resistance R3 and resistance R2 series connection
Two output terminals play the role of stable output end voltage；Two signal input parts of optocoupler U2 be connected in parallel on resistance R3 formed it is defeated
Go out voltage sample circuit, signal is sent to control circuit by two signal output parts of optocoupler U2.
3. a kind of constant voltage source for driving LED light strip according to claim 1 or 2, it is characterised in that：The accumulator
Including diode D1, inductance N1, the filter circuit includes capacitance C1, and the negative output terminal of current rectifying and wave filtering circuit passes through on-off circuit
It is connected to diode D1 anodes, the cathode and capacitance C1 anodes of the positive output end connection diode D1 of current rectifying and wave filtering circuit, two poles
Connect the inductance N1 between pipe D1 anodes and capacitance C1 cathode.
4. a kind of constant voltage source for driving LED light strip according to claim 3, it is characterised in that：The control circuit bag
It includes and starts circuit and control unit, the startup for starting circuit control described control unit is described to start circuit and the storage
Energy circuit coupling, starts circuit and couples one with the inductance N1 including coil N2, voltage-stabiliser tube D4 and resistance R5, the coil N2
Mutual inductor is formed on iron core, coil N2 one end is connected with ground terminal, and the other end of coil N2 is connected with voltage-stabiliser tube D4 anodes, described steady
Pressure pipe D4 cathode are connected by the resistance R5 with described control unit.
5. a kind of constant voltage source for driving LED light strip according to claim 4, it is characterised in that：The on-off circuit bag
Include switching tube Q1, the control unit be control chip U1, the switching tube Q1 D poles and the current rectifying and wave filtering circuit bear it is defeated
Outlet connects, and the S poles of the switching tube Q1 are connected with the anode of diode D1, and the G poles of the switching tube Q1 pass through the driving
Circuit is connected with the DRV feet of the control chip U1, and the driving circuit includes triode Q2, diode D3 and resistance R4,
The G poles of the switching tube Q1 are connected with the anode of the diode D3 and the e poles of the triode Q2, the b of the triode Q2
Pole is connected with one end of the resistance R4, cathode and the control chip of the other end of the resistance R4 with the diode D3
The DRV feet connection of U1, the c poles of the triode Q2 are connected with the VCC feet of the control chip U1.
6. a kind of constant voltage source for driving LED light strip according to claim 5, it is characterised in that：In current rectifying and wave filtering circuit
Current-limiting protection circuit is also associated between on-off circuit, the current-limiting protection circuit includes resistance R6, resistance R7 and resistance R8,
The resistance R6 is connected between the D poles of the current rectifying and wave filtering circuit negative output terminal and the switch Q1, the resistance R7 and institute
Resistance R6 parallel connections are stated, the CS that the node between resistance R6 and the D poles of the switch Q1 passes through resistance R8 and the control chip U1
Foot connects.
7. a kind of constant voltage source for driving LED light strip according to claim 6, it is characterised in that：The rectifying and wave-filtering electricity
Road includes rectifier bridge BR1, capacitance C3 and resistance R9, is connected to after the positive and negative anodes of the capacitance C3 are in parallel with the resistance R9 described
Between the positive-negative output end of rectifier bridge BR1.
8. a kind of LED light source, the constant voltage source including LED light strip and driving LED light strip, the LED light strip can by several
The LED unit circuit of autonomous working is formed in parallel, the LED unit circuit that each can work independently by several LED simultaneously
The first and at least one divider resistance of receipts or other documents in duplicate is in series, and each LED parallel units are formed in parallel by least 2 LED, and each of which can
The light bar length range that accounts in the LED unit circuit of autonomous working is 0.9 meter to 1.1 meters, and the LED unit that each can work independently is returned
The quantitative range for the LED parallel units that road includes is 18 to 36, designs the two of the LED unit circuit that each can work independently
The voltage Vi at end is 110V ± 10V, each LED parallel units are serially connected to obtain the summation VLED of both end voltage and each partial pressure
The summation VR that resistance is serially connected to obtain both end voltage meets：VLED+VR=Vi,Its feature exists
In：The constant voltage source for driving LED light strip is constant pressure of the claim 1 to the driving LED light strip of claim 7 any one
Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558547.9U CN207460553U (en) | 2017-11-18 | 2017-11-18 | It is a kind of to drive the constant voltage source of LED light strip and apply its LED light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558547.9U CN207460553U (en) | 2017-11-18 | 2017-11-18 | It is a kind of to drive the constant voltage source of LED light strip and apply its LED light source |
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| Publication Number | Publication Date |
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| CN207460553U true CN207460553U (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982487A (en) * | 2019-04-23 | 2019-07-05 | 珠海其美光电科技有限公司 | A kind of LED line shape lamp of isometric impedance |
-
2017
- 2017-11-18 CN CN201721558547.9U patent/CN207460553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982487A (en) * | 2019-04-23 | 2019-07-05 | 珠海其美光电科技有限公司 | A kind of LED line shape lamp of isometric impedance |
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