CN104219820B - LED drives control circuit - Google Patents
LED drives control circuit Download PDFInfo
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- CN104219820B CN104219820B CN201310213490.9A CN201310213490A CN104219820B CN 104219820 B CN104219820 B CN 104219820B CN 201310213490 A CN201310213490 A CN 201310213490A CN 104219820 B CN104219820 B CN 104219820B
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Abstract
A kind of LED drives control circuit, for work light and external electronic device are discharged, including: for accept electricity generation module charging power storage module, for detect power storage module voltage voltage drop detection module, for by the division module of power storage module voltage to voltage drop detection module, be used for controlling the relay module of power storage module supplying power for outside, being used for controlling the switch module that LED is connected with power storage module and the trigger module being used for triggering described switch module on or off；The voltage of power storage module can export to LED by trigger module and switch module, and the voltage of power storage module is controlled by pressure drop detection module, thus the voltage of power storage module disclosure satisfy that the driving voltage of LED, thus LED is directly driven normally to work, it is to avoid to increase driver.Furthermore, power storage module can storing electricity, therefore, electricity generation module stop generating time, light fixture can be powered, thus be extended the working time of lifting work lamp by power storage module.
Description
Technical field
The present invention relates to LED control circuit, particularly relate to a kind of LED without driver and drive control electricity
Road.
Background technology
Lifting work lamp is mainly made up of lamp holder, elevating lever and skeleton component three parts.Lamp holder typically has two
Individual, be fixed on elevating lever top with fixing nut, can in the range of 180 ° any adjustment direction.In lamp holder
Equipped with LED light source and lens, making light is projection.Elevating lever can reach more than 2 meters after rising completely
Height, after contraction the most about 0.7 meter, user can arbitrarily adjust height as required between 0.7-2 rice.Bone
Frame assembly is mainly used to fix the skeleton of light fixture power supply unit and carry mobile device.Wherein, power supply unit
Including digital frequency conversion generator, LED driving, catapult line and lamp operation panel.Digital frequency conversion generator is
Light fixture provides AC220V alternating current power supply.LED drives and is used for controlling LED current.Catapult line is used for connecting lamp
Head and LED drive, and catapult line can also can shrink automatically along with elevating lever elongation.On guidance panel mainly
There are the switch of light fixture and the status indicator lamp of electromotor.Carry mobile device and include road wheel, pull bar, pull bar
Also can stretch.Elevating lever, when off working state, can be reduced to lowest part by light fixture, can be by lamp
Head takes off and is contained on skeleton, by catapult line folding and unfolding on a pallet, and light fixture overall appearance after shell is closed
Similar case and bag.
From above introduction it can be seen that lifting work lamp is maximum that feature is that off working state can be shunk,
Use portable digital frequency conversion generator, the most very convenient movement and carrying from volume and weight；Not enough
Part is that the general tankage of small size digital electromotor is little, thus continuous operating time is short.The power of electromotor
Much larger than the power of lamp holder, electromotor is not fully used, and there is energy waste；Ventilate in tunnel etc.
The most smooth place, the noise of electromotor also can affect the audition of staff.
In lifting work lamp, LED is by driver control, when electromotor normally works, by driver control
LED processed normally works.But when electromotor stops generating, when utilizing other power supplys again LED to be powered,
It is also required to driver, therefore, LED drive circuit line can be caused to become complicated, affect lifting work lamp
Service efficiency.
Summary of the invention
Based on this, it is necessary to for asking that digital frequency conversion generator working time end, power cannot make full use of
Topic, it is provided that a kind of can extend the lifting work lamp working time and without driver control LED LED drive
Control circuit.
A kind of LED drives control circuit, for work light and external electronic device are discharged, including: it is used for
Accept electricity generation module charging power storage module, for detect described power storage module voltage voltage drop detection module,
For by the division module of described power storage module voltage to described voltage drop detection module, be used for controlling electric power storage
The relay module of module supplying power for outside, for controlling switch module that LED is connected with power storage module and being used for
Trigger the trigger module of described switch module on or off；
The test side of described voltage drop detection module electrically connects with the outfan of described division module, and described pressure drop is examined
Surveying the earth terminal ground connection of module, the outfan of described voltage drop detection module is defeated with the first of described relay module
Entering end electrical connection, the input of described division module electrically connects with the outfan of described relay module, described
Second input of relay module is for connecing the positive pole of described power storage module；The output of described relay module
End also input with described trigger module electrically connect, the outfan of described trigger module and described switch module
Input electrically connects, and the outfan of described switch module is for electrically connecting with LED；
By described division module, described voltage drop detection module detects that the voltage of power storage module is more than discharge threshold
Time, described voltage drop detection module controls described relay module and obtains electric, and described power storage module is by described relay
Described trigger module is powered by device module, and described trigger module obtains the conducting of electric triggering described switch module, described
LED is powered by power storage module；
By described division module, described voltage drop detection module detects that the voltage of power storage module is less than or equal to putting
During electricity threshold value, described voltage drop detection module controls described relay module dead electricity, and described relay module disconnects
Connection between described power storage module and described trigger module, described trigger module dead electricity triggers described switching molding
Block ends, and described power storage module stops powering LED.
Wherein in an embodiment, described voltage drop detection module includes three-terminal voltage-stabilizing pipe U1, and described three ends are steady
The test side of pressure pipe U1 is the test side of described voltage drop detection module, described three-terminal voltage-stabilizing pipe U1 the most extremely
The earth terminal of described voltage drop detection module, the negative pole of described three-terminal voltage-stabilizing pipe U1 is described voltage drop detection module
Outfan.
Wherein in an embodiment, described division module includes divider resistance R2 and divider resistance R3, institute
State divider resistance R2 and described divider resistance R3 be series at described relay module outfan and earth terminal it
Between, the points of common connection of described divider resistance R2 and described divider resistance R3 and described voltage drop detection module
Test side electrically connects.
Wherein in an embodiment, described relay module includes relay R L1, described relay R L1
Electronic coil be series between the input of described division module and the outfan of described voltage drop detection module,
Normal open switch one end of described relay R L1 is used for being connected with the positive electrical of power storage module, described relay
The normal open switch other end of RL1 electrically connects with the electronic coil of described relay R L1, described relay R L1
The outfan that points of common connection is described relay module of electronic coil and normal open switch.
Wherein in an embodiment, described trigger module includes triggering switch SW1, described triggering switch SW1
Input and trigger end and correspond to input and the outfan of described trigger module.
Wherein in an embodiment, described switch module includes relay R L2, described relay R L2 bag
Including electronic coil, the first normal open switch and the second normal open switch, described electronic coil one end is with LED2 just
Pole electrically connects, the other end ground connection of described electronic coil, and one end of described first normal open switch is with LED2's
Positive electrical connects, and the other end is connected with the positive electrical of LED1, one end of described second normal open switch and LED2
Negative electricity connect, the other end is connected with the negative electricity of LED1.
Wherein in an embodiment, also include that filtration module, the input of described filtration module continue with described
The points of common connection electrical connection of electrical appliance module outfan and described trigger module input, described filtration module
Output head grounding.
Wherein in an embodiment, described filtration module includes electrochemical capacitor C2 and filter capacitor C3, institute
State electrochemical capacitor C2 in parallel with described filter capacitor C3 after one end ground connection, the other end is described filtration module
Input.
Wherein in an embodiment, also include that anti-reverse module, the input of described anti-reverse module are used for
Connecing external charging port, the outfan of described anti-reverse module electrically connects with the outfan of described relay module,
The feedback end of described anti-reverse module electrically connects with the outfan of described division module.
Wherein in an embodiment, described anti-reverse module includes diode D1, diode D2 and dividing potential drop
Resistance R1, the negative pole of described diode D1 is connected with one end of described divider resistance R1, described divider resistance
The other end of R1 is the feedback end of described anti-reverse module, the positive pole of described diode D1 and described diode
The positive electrical of D2 connects, and the negative pole of described diode D2 is the outfan of described anti-reverse module, and described two
The positive pole of pole pipe D1 and the input that positive pole points of common connection is described anti-reverse module of described diode D2
End.
Above-mentioned LED drives control circuit by increasing power storage module so that light fixture can supplied by electricity generation module
Also power storage module is charged while electricity.Rear class in power storage module adds trigger module and switch module, makes
The voltage obtaining power storage module can be exported to LED by trigger module and switch module, and the electricity of power storage module
Pressure is controlled by pressure drop detection module, thus the voltage of power storage module disclosure satisfy that the driving voltage of LED, thus
LED is directly driven normally to work, it is to avoid to increase driver.Furthermore, power storage module can storing electricity, because of
This, when electricity generation module stops generating, light fixture can be powered, thus be extended lifting work lamp by power storage module
Working time.
Accompanying drawing explanation
Fig. 1 is the module map that LED drives control circuit；
Fig. 2 is the schematic diagram that LED drives control circuit.
Detailed description of the invention
As it is shown in figure 1, drive the module map of control circuit for LED.
A kind of LED drives control circuit, including: for accepting the electric power storage of electricity generation module (not shown) charging
Module 102, for detecting the voltage drop detection module 104 of described power storage module 102 voltage, for by described storage
Electricity module 102 voltage to described voltage drop detection module 104 division module 106, be used for controlling electric power storage mould
The relay module 108 of block 102 supplying power for outside, for controlling the switch that LED is connected with power storage module 102
Module 112 and for triggering the trigger module 110 of described switch module 112 on or off.
The test side of described voltage drop detection module 104 electrically connects with the outfan of described division module 106, institute
Stating the earth terminal ground connection of voltage drop detection module 104, the outfan of described voltage drop detection module 104 continues with described
The first input end electrical connection of electrical appliance module 108, the input of described division module 106 and described relay
The outfan electrical connection of module 108, the second input of described relay module 108 is used for connecing described electric power storage
The positive pole of module 102；The outfan of described relay module 108 is also electric with the input of trigger module 110
Connecting, the outfan of trigger module 110 electrically connects with the input of switch module 112, switch module 112
Outfan for electrically connecting with LED.
Described voltage drop detection module 104 detects the voltage of power storage module 102 by described division module 106
During more than discharge threshold, described voltage drop detection module 104 controls described relay module 108 and obtains electric, described
Trigger module 110 is powered by power storage module 102 by described relay module 108, trigger module 110
Electricity triggers switch module 112 and turns on, and LED is powered by power storage module 102.
Described voltage drop detection module 104 detects the voltage of power storage module 102 by described division module 106
During less than or equal to discharge threshold, described voltage drop detection module 104 controls described relay module 108 dead electricity,
Described relay module 108 disconnects the connection between described power storage module 102 and trigger module 110.Trigger
Module 110 dead electricity triggers switch module 112 and ends, and described power storage module 102 stops powering LED.
Power storage module 102, for charging when electricity generation module (not shown) generates electricity, stops sending out at electricity generation module
During electricity, power to lifting work lamp and by usb interface module 112 external electronic equipments.It is thus possible to
Make full use of the generated output of electricity generation module.
Division module 106 is for exporting after the output voltage dividing potential drop of power storage module 102 to voltage drop detection module
104。
Voltage drop detection module 104 is for detecting power storage module by the output voltage of detection division module 106
The output voltage of 102, it is to avoid power storage module 102 is crossed and put and cause power storage module 102 to be damaged.Specifically,
When voltage drop detection module 104 detects the output voltage of power storage module 102 more than discharge threshold, voltage drop detection
Module 104 controls relay module 108 and obtains electric, and relay module 108 turns on, so that power storage module
102 pass through relay module 108 supplying power for outside.Voltage drop detection module detects the output electricity of power storage module 102
When pressure is less than or equal to discharge threshold, voltage drop detection module 104 is controlling relay module 108 dead electricity, continues
Electrical appliance module 108 ends, so that power storage module 102 cannot supplying power for outside.Power storage module 102 stops
Work, it is to avoid occurred putting.
Relay module 108 is used for connecting power storage module 102 and trigger module 110.Specifically, relay mould
When block 108 obtains electric, power storage module 102 is connected with trigger module 110.During relay module 108 dead electricity,
Power storage module 102 disconnects the connection between trigger module 110.
Trigger module 110 for according to self electric conducting and the cut-off controlling switch module 112 with dead electricity.
Specifically, when trigger module 110 obtains electric, control switch module 112 and turn on, during trigger module 110 dead electricity,
Control switch module 112 to end.
Switch module 112 is used for connecting trigger module 110 and LED such that it is able to lead at switch module 112
Time logical, LED is powered by power storage module 102, makes LED normally work.
Incorporated by reference to Fig. 2.
Power storage module 102 is accumulator BT.
Voltage drop detection module 104 includes three-terminal voltage-stabilizing pipe U1, and the test side of described three-terminal voltage-stabilizing pipe U1 is institute
State the test side of voltage drop detection module 104, the most described voltage drop detection module of described three-terminal voltage-stabilizing pipe U1
The earth terminal of 104, the outfan that negative pole is described voltage drop detection module 104 of described three-terminal voltage-stabilizing pipe U1.
Voltage drop detection module 104 also includes filter capacitor C1, filter capacitor C1 one end and three-terminal voltage-stabilizing pipe U1
Test side electrical connection, other end ground connection.
Division module 106 include divider resistance R2 and divider resistance R3, described divider resistance R2 with described point
Piezoresistance R3 is series between outfan and the earth terminal of described relay module 108, described divider resistance
R2 electrically connects with the test side of the points of common connection of described divider resistance R3 with described voltage drop detection module 104.
It is described that relay module 108 includes that relay R L1, the electronic coil of described relay R L1 are series at
Between input and the outfan of described voltage drop detection module 104 of division module 106, described relay R L1
Normal open switch one end for being connected with the positive electrical of power storage module 102, the normally opened of described relay R L1 opens
Close the other end electrically connect with the electronic coil of described relay R L1, the electronic coil of described relay R L1 and
The points of common connection of normal open switch is the outfan of described relay module 108.
Relay module 108 also includes that diode D3, diode D3 are parallel to the electric wire of relay R L1
Circle two ends, wherein, the negative pole of diode D3 electrically connects with normal open switch one end of relay R L1.
Trigger module 110 includes triggering the input of switch SW1, described triggering switch SW1 and triggers end pair
Should be input and the outfan of described trigger module 110.
In one embodiment, trigger switch SW1 with trigger switch SW2 with the use of.
When triggering switch SW2 Guan Bi and trigger switch SW1 disconnection, now by electricity generation module to work light
In LED power.Therefore, need to increase driver 1 and driver 2 between electricity generation module and LED,
Thus correspondence drives LED1 and LED2.Now two groups of LED are respectively by two driver control, two groups of LED
Relatively independent.If one of them drive or one group of LED break down; do not interfere with another set drive and
Another organizes LED.
When triggering switch SW2 to disconnect and to trigger switch SW1 Guan Bi, the electronic coil of relay R L2 obtains
Electricity, the first normal open switch K1 and the second normal open switch K2 of relay R L2 all close.Thus by two groups
LED is connected in parallel, and accumulator is by triggering the normal open switch of switch SW1 and relay R L2 to LED
Power supply.It it is now to have driving LED between accumulator, it is not necessary to driver.Owing to battery tension is to have admittedly
Determining scope, therefore, as long as the cell voltage of accumulator is at the highest notch, the electric current of thing LED meets LED and drives
Streaming current requirement, would not cause damage because electric current is excessive to LED such that it is able to make LED normally work.
And LED current reduces with cell voltage and slowly reduces, thus without causing the most visually drop,
Thus improve Consumer's Experience.Directly drive LED due to battery, it is not necessary to driver, advantageously reduce lifting work
Make cost and the weight of lamp, and LED drives control circuit line simple.
In the above-described embodiments, trigger switch SW1 and the triggering switch SW2 same time can only close one,
Therefore the ship type that can select logic merit ON-OFF-ON switchs, and after a Guan Bi, another is from dynamic circuit breaker
Open.
When triggering switch SW1 Guan Bi, the LED in lamp holder is by storage battery power supply, and the most referred to as work light
State；Trigger switch SW2 Guan Bi time, the LED in lamp holder by generator powered, the most referred to as high light
State.Under high light state, electromotor is charged a battery by charger the most simultaneously.Both can save and send out
The electric energy of motor, is not take up again the extra charging interval；By arranging suitable charger output no-load voltage,
Can ensure that battery is not overcharged, when cell voltage enters floating charge state after charger floating voltage, floating
It is filled with beneficially battery recovery capacity.
Switch module 112 includes that relay R L2, described relay R L2 include electronic coil, first normally opened
Switch K1 and the second normal open switch K2, described electronic coil one end is connected with the positive electrical of LED2, described
The other end ground connection of electronic coil, one end of described first normal open switch K1 is connected with the positive electrical of LED2,
The other end is connected with the positive electrical of LED1, one end of described second normal open switch K2 and the negative electricity of LED2
Connecting, the other end is connected with the negative electricity of LED1.
LED drives control circuit also to include filtration module 114, and the input of described filtration module 114 is with described
The points of common connection electrical connection of relay module 108 outfan and described voltage transformation module 110 input,
The output head grounding of described filtration module 114.
Filtration module 114 includes electrochemical capacitor C2 and filter capacitor C3, described electrochemical capacitor C2 and described filter
One end ground connection after ripple electric capacity C3 parallel connection, the other end is the input of described filtration module 114.
LED drives control circuit also to include anti-reverse module 116, and the input of described anti-reverse module 116 is used
In connecing external charging port, the outfan of described anti-reverse module 116 is defeated with described relay module 108
Going out end electrical connection, the feedback end of described anti-reverse module 116 is electrically connected with the outfan of described division module 106
Connect.
Anti-reverse module 116 includes diode D1, diode D2 and divider resistance R1, described diode
The negative pole of D1 is connected with one end of described divider resistance R1, and the other end of described divider resistance R1 is described anti-
The reversely feedback end of module 116, the positive pole of described diode D1 is connected with the positive electrical of described diode D2,
The negative pole of described diode D2 is the outfan of described anti-reverse module 116, the positive pole of described diode D1
With the input that the positive pole points of common connection of described diode D2 is described anti-reverse module 116.
Based on above-mentioned all embodiments, the operation principle of LED driving control circuit is as follows:
Electricity generation module generating in lifting work lamp system, powers to lifting work lamp simultaneously and fills accumulator
Electricity.When accumulator is charged by electricity generation module by charging inlet, the voltage at three-terminal voltage-stabilizing pipe U1 two ends reaches to lead
Energising pressure, three-terminal voltage-stabilizing pipe U1 turns on.The electronic coil of relay R L1 obtains electric, therefore, and relay R L1
Normal open switch Guan Bi, electricity generation module by Guan Bi normal open switch to accumulator charge.
When electricity generation module stops generating, accumulator starts lifting work lamp.Battery tension Vbat is more than
2.5*(R2+R3)/R3 time, the voltage that three-terminal voltage-stabilizing pipe U1 test side detects can reach three-terminal voltage-stabilizing
The conducting voltage of pipe U1, three-terminal voltage-stabilizing pipe U1 turns on.Therefore, the electronic coil of relay R L1 obtains electric,
The normal open switch Guan Bi of relay R L1.Trigger switch SW1 and obtain electric Guan Bi, therefore, relay R L2
Electronic coil obtains electric.The first normal open switch K1 and the second normal open switch K2 of relay R L2 all close.LED1
In parallel with LED2, LED1 and LED2 is powered by accumulator.Due to what battery tension pre-set it is
The driving voltage of LED, therefore, when LED is powered by accumulator, it is not necessary to increase driver.
Receive and add filter capacitor C3 and electricity at accumulator output voltage and triggering switch SW1 between voltage
Solve electric capacity C2, thus filter the interference in accumulator output voltage.
When battery tension Vbat is less than or equal to 2.5*(R2+R3)/R3 time, three-terminal voltage-stabilizing pipe U1 detects
The voltage that end detects cannot make three-terminal voltage-stabilizing pipe U1 turn on, and therefore, three-terminal voltage-stabilizing pipe U1 ends.Relay
The electronic coil dead electricity of device RL1, the normal open switch of relay R L1 disconnects.Accumulator stops supplying power for outside.
Trigger switch SW1 dead electricity, the same dead electricity of electronic coil of relay R L2, therefore the first normal open switch K1
All disconnect with the second normal open switch K2.Accumulator stops powering LED.
When electricity generation module generates electricity again and charges accumulator, three-terminal voltage-stabilizing pipe U1 reaches conducting voltage to be led
Time logical, the electronic coil of relay R L1 obtains electric, and the normal open switch Guan Bi of relay R L1, accumulator starts
It is electrically charged.
Above-mentioned LED drives control circuit by increasing power storage module so that light fixture can supplied by electricity generation module
Also power storage module 102 is charged while electricity.Power storage module 102 rear class add trigger module 110 and
Switch module 112 so that the voltage of power storage module 102 can pass through trigger module 110 and switch module 112
Output is to LED, and the voltage of power storage module 102 is by the control of pressure drop detection module 104, thus electric power storage mould
The voltage of block 102 disclosure satisfy that the driving voltage of LED, thus directly drives LED normally to work, it is to avoid increases
Add driver.Furthermore, power storage module 102 can storing electricity, therefore, electricity generation module stop generating time,
Light fixture can be powered by power storage module 102, thus extends the working time of lifting work lamp.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (10)
1. LED drives a control circuit, for work light and external electronic device are discharged, including:
For accept electricity generation module charging power storage module, for by described power storage module voltage to voltage drop detection
The division module of module, it is characterized in that, also include: for detecting the pressure drop inspection of described power storage module voltage
Survey module, for controlling the relay module of power storage module supplying power for outside, for controlling LED and power storage module
The switch module connected and the trigger module being used for triggering described switch module on or off；
The test side of described voltage drop detection module electrically connects with the outfan of described division module, and described pressure drop is examined
Surveying the earth terminal ground connection of module, the outfan of described voltage drop detection module is defeated with the first of described relay module
Entering end electrical connection, the input of described division module electrically connects with the outfan of described relay module, described
Second input of relay module is for connecing the positive pole of described power storage module；The output of described relay module
End also input with described trigger module electrically connect, the outfan of described trigger module and described switch module
Input electrically connects, and the outfan of described switch module is for electrically connecting with LED；
By described division module, described voltage drop detection module detects that the voltage of power storage module is more than discharge threshold
Time, described voltage drop detection module controls described relay module and obtains electric, and described power storage module is by described relay
Described trigger module is powered by device module, and described trigger module obtains the conducting of electric triggering described switch module, described
LED is powered by power storage module；
By described division module, described voltage drop detection module detects that the voltage of power storage module is less than or equal to putting
During electricity threshold value, described voltage drop detection module controls described relay module dead electricity, and described relay module disconnects
Connection between described power storage module and described trigger module, described trigger module dead electricity triggers described switching molding
Block ends, and described power storage module stops powering LED.
LED the most according to claim 1 drives control circuit, it is characterised in that described pressure drop is examined
Survey module and include that three-terminal voltage-stabilizing pipe U1, the test side of described three-terminal voltage-stabilizing pipe U1 are described voltage drop detection module
Test side, the earth terminal of the most described voltage drop detection module of described three-terminal voltage-stabilizing pipe U1, described three ends
The negative pole of stabilivolt U1 is the outfan of described voltage drop detection module.
LED the most according to claim 1 drives control circuit, it is characterised in that described dividing potential drop mould
Block includes that divider resistance R2 and divider resistance R3, described divider resistance R2 connect with described divider resistance R3
Between the outfan and earth terminal of described relay module, described divider resistance R2 and described divider resistance
The points of common connection of R3 electrically connects with the test side of described voltage drop detection module.
LED the most according to claim 1 drives control circuit, it is characterised in that described relay
Module includes that relay R L1, the electronic coil of described relay R L1 are series at the input of described division module
Hold with the outfan of described voltage drop detection module between, normal open switch one end of described relay R L1 for
The positive electrical of power storage module connects, the normal open switch other end of described relay R L1 and described relay R L1
Electronic coil electrical connection, the electronic coil of described relay R L1 and the points of common connection of normal open switch are institute
State the outfan of relay module.
LED the most according to claim 1 drives control circuit, it is characterised in that described trigger mode
Block includes triggering input and the triggering end of switch SW1, described triggering switch SW1 and corresponds to described trigger mode
The input of block and outfan.
LED the most according to claim 1 drives control circuit, it is characterised in that described switching molding
Block includes that relay R L2, described relay R L2 include that electronic coil, the first normal open switch and second are normally opened
Switch, described electronic coil one end is connected with the positive electrical of LED2, the other end ground connection of described electronic coil,
Described one end of first normal open switch is connected with the positive electrical of LED2, and the other end is connected with the positive electrical of LED1,
Described one end of second normal open switch is connected with the negative electricity of LED2, and the other end is connected with the negative electricity of LED1.
LED the most according to claim 1 drives control circuit, it is characterised in that also include filtering
Module, the input of described filtration module and described relay module outfan and described trigger module input
Points of common connection electrical connection, the output head grounding of described filtration module.
LED the most according to claim 7 drives control circuit, it is characterised in that described filtering mould
Block includes that electrochemical capacitor C2 and filter capacitor C3, described electrochemical capacitor C2 are in parallel with described filter capacitor C3
Rear one end ground connection, the other end is the input of described filtration module.
LED the most according to claim 1 drives control circuit, it is characterised in that also include counnter attack
To module, the input of described anti-reverse module is used for connecing external charging port, described anti-reverse module defeated
Go out end to electrically connect with the outfan of described relay module, the feedback end of described anti-reverse module and described dividing potential drop
The outfan electrical connection of module.
LED the most according to claim 9 drives control circuit, it is characterised in that described anti-reverse
Module includes diode D1, diode D2 and divider resistance R1, and the negative pole of described diode D1 is with described
One end of divider resistance R1 connects, and the other end of described divider resistance R1 is the feedback of described anti-reverse module
End, the positive pole of described diode D1 is connected with the positive electrical of described diode D2, described diode D2's
Negative pole is the outfan of described anti-reverse module, and the positive pole of described diode D1 is with described diode D2 just
Pole points of common connection is the input of described anti-reverse module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213490.9A CN104219820B (en) | 2013-05-31 | LED drives control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213490.9A CN104219820B (en) | 2013-05-31 | LED drives control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104219820A CN104219820A (en) | 2014-12-17 |
| CN104219820B true CN104219820B (en) | 2016-11-30 |
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