CN110493915A - A kind of LED drive device and LED lamp - Google Patents
A kind of LED drive device and LED lamp Download PDFInfo
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- CN110493915A CN110493915A CN201910762508.8A CN201910762508A CN110493915A CN 110493915 A CN110493915 A CN 110493915A CN 201910762508 A CN201910762508 A CN 201910762508A CN 110493915 A CN110493915 A CN 110493915A
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- 230000006837 decompression Effects 0.000 claims abstract description 54
- 239000003990 capacitor Substances 0.000 claims description 80
- 230000005611 electricity Effects 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 28
- 230000009466 transformation Effects 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 abstract description 10
- 238000005286 illumination Methods 0.000 abstract description 7
- 210000003205 muscle Anatomy 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 230000009123 feedback regulation Effects 0.000 description 3
- 230000003760 hair shine Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
A kind of LED drive device and LED lamp comprising key module, control module, DC decompression module and feedback module；Key module, which inputs to generate according to user, presses key control signal；Control module generates first control signal and second control signal according to by key control signal；DC decompression module generates driving power according to second control signal, feedback signal and DC power supply to be powered to LED module；Feedback module generates feedback signal according to first control signal and driving power；Due to carrying out power supply conversion using DC decompression module, and pressure stabilizing is carried out by feedback module, improves the efficiency of LED drive device, LED drive device is made to be not easy to generate heat, save electric energy；And the illumination functions such as the quick-fried sudden strain of a muscle of LED module, the flashing of low pressure warning, Qiang Guang, work light are realized, so that the lamplight brightness of LED module can adapt to different application scenarios, illuminating effect is more bonded actual demand.
Description
Technical field
The invention belongs to security protection lighting technical field more particularly to a kind of LED drive devices and LED lamp.
Background technique
Currently, flashlight, as a kind of widely used portable lighting tool, with the development of technology, completely newly shine skill
Art --- LED (Light Emitting Diode, light emitting diode) is applied in LED lamp, and due to the colour temperature of LED
Reached unprecedented height, close to the colour temperature of even more than white light, power consumption is lower, better reliability, longer life expectancy more resistant to
With, it is more environmentally friendly, it is very popular on the market.
But it is traditionally used for the LED light source flashlight of safety fire fighting, driving mainly goes perseverance by linear component
Stream driving (such as 7135), drive efficiency are lower than 80% and severity of generating heat.Lighting control technology only has switch control functions, only
The light on and off of light are able to achieve, concrete application scene is not adjusted targetedly.
Therefore, that there are the drive efficiencies of LED light source flashlight in traditional technical solution is low, fever is serious and applicable field
The limited problem of scape.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of LED drive device and LED lamps, it is intended to solve traditional skill
The drive efficiency of LED light source flashlight present in art scheme is low, fever is serious and is applicable in the limited problem of scene.
The first aspect of the embodiment of the present invention provides a kind of LED drive device, and the LED drive device includes:
The key module for pressing key control signal is generated for inputting according to user；
It is connect with the key module, for generating first control signal and the second control by key control signal according to described
The control module of signal；
It is connect with the control module, for according to the second control signal, feedback signal and the DC power supply
Generate DC decompression module of the driving power to be powered to LED module；
It is connect with the control module and the DC decompression module, for according to the first control signal and the drive
The electric current of dynamic power supply generates the feedback module of the feedback signal.
The LED drive device in one of the embodiments, further include:
It is connect with the DC decompression module, for generating the battery module of DC power supply；
It is connect with the control module and the battery module, for detecting the voltage of the DC power supply to generate voltage
Detect the battery detection module of signal；
It is connect with the control module, the electricity quantity display module for being shown according to display signal；
The control module is specifically used for generating described the by key control signal and the voltage detection signal according to described
Two control signals, and the display signal is generated according to the voltage detection signal；Wherein, the display signal includes the first son
Show that signal, the second son display signal, third show signal and the 4th son display signal.
The LED drive device in one of the embodiments, further include:
It is connect with the control module and the battery module, for being filled according to charge power supply to the battery module
Electricity, and generate the charge management module of the first charging signals and the second charging signals；
The control module is specifically used for according to the voltage detection signal, first charging signals and described second
Charging signals generate the display signal.
The LED drive device in one of the embodiments, further include:
Connect with the control module, for according to the DC power supply generate control power supply with to the control module into
The voltage transformation module of row power supply.
The battery detection module includes first resistor, second resistance and first capacitor in one of the embodiments,；
The first end of the first resistor is connect with the DC power supply, the second end of the first resistor and described second
The first end of resistance is connected with the first end of the first capacitor, and the of the second end of the second resistance and the first capacitor
Two ends are connect with power ground；
The first end of the second resistance is the voltage detection signal output end of the battery detection module.
The charge management module includes the first power management chip, 3rd resistor, second in one of the embodiments,
Capacitor, third capacitor and first diode；
The charging current configuration end of first power management chip is connect with the first end of the 3rd resistor, and described the
The second end and electricity at the temperature end of one power management chip, the ground terminal of first power management chip and the 3rd resistor
It connects to source, the enable end of first power management chip is connect with charge power supply, the electricity of first power management chip
Source is connect with the cathode of the first end of the third capacitor and the first diode, the second end and electricity of the third capacitor
It connects to source, the anode of the first diode is connect with the charge power supply, the battery-end of first power management chip
It is connect with the first end of DC power supply and second capacitor, the second end of second capacitor is connect with power ground；
The charging end of first power management chip is the first charging signals output end of the charge management module；
First power management chip is the second charging signals output end of the charge management module to generator terminal.
The control module includes microprocessor, the 4th resistance and the 4th capacitor in one of the embodiments,；
The first end and control of the power end of the microprocessor, the first end of the 4th resistance and the 4th capacitor
Power supply connection processed, the second end of the 4th capacitor are connect with power ground, the second end and the micro process of the 4th resistance
First data input/output terminal of device connects, and the ground terminal of the microprocessor is connect with power ground；
First data input/output terminal of the microprocessor is the key control signal input of the control module；
Second data input/output terminal of the microprocessor is the second control signal output end of the control module；
The third data input/output terminal of the microprocessor is the first control signal output end of the control module；
4th data input/output terminal of the microprocessor is the first charging signal input terminal of the control module；
5th data input/output terminal of the microprocessor is the second charging signal input terminal of the control module；
6th data input/output terminal of the microprocessor is the first son display signal output end of the control module,
7th data input/output terminal of the microprocessor is the second son display signal output end of the control module, micro- place
The 8th data input/output terminal for managing device is that third of the control module shows signal output end, the of the microprocessor
Nine data input/output terminals are the 4th son display signal output end of the control module；
Second son display signal output of the first son display signal output end, the control module of the control module
End, the third display signal output end of the control module, the 4th son display signal output end of the control module are common
Constitute the display signal output end of the control module.
The DC decompression module includes the first decompression chip, the first inductance, the 5th capacitor in one of the embodiments,
And the 6th capacitor；
The voltage input end of the first decompression chip is connect with the first end of the DC power supply and the 5th capacitor,
The second end of 5th capacitor is connect with power ground, and the ground terminal of the first decompression chip is connect with power ground, and described first
The sensing end of decompression chip is connect with the first end of first inductance, the second end of first inductance and the 6th capacitor
First end connection, the second end of the 6th capacitor connect with power ground；
The feedback end of the first decompression chip is the feedback signal input terminal of the DC decompression module；
The enable end of the first decompression chip is the second control signal input terminal of the DC decompression module；
The first end of 6th capacitor is the driving power output end of the DC decompression module.
The feedback module includes the first amplifier, the 7th capacitor, the 8th capacitor, the 5th in one of the embodiments,
Resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance and the tenth resistance；
The first end of 5th resistance is connect with driving power anode, the second end and the described 6th of the 5th resistance
The first end of resistance is connected with the first end of the 7th resistance, and the second end of the 6th resistance is connect with power ground, described
The second end of 7th resistance is connect with the output end of first amplifier, the power end of first amplifier and the described 7th
The first end of capacitor is connected with the driving power anode, and the second end of the 7th capacitor is connect with power ground, and described first
The non-inverting input terminal of amplifier and the first end of the 8th resistance are connect with driving power cathode, first amplifier it is anti-
The first end of the first end of phase input terminal and the 9th resistance, the first end of the tenth resistance and the 8th capacitor connects
It connects, the ground terminal of first amplifier, the second end of the 8th resistance, the second end and the described 8th of the 9th resistance
The second end of capacitor is connect with power ground；
The first end of 7th resistance is the feedback signal output of the feedback module；
The second end of tenth resistance is the first control signal input terminal of the feedback module.
The second aspect of the embodiment of the present invention provides a kind of LED lamp, and the LED lamp includes LED described above
Driving device.
The embodiment of the present invention presses key control signal by line module input, and control module is generated according to by key control signal
First control signal and second control signal, DC decompression module is according to second control signal, feedback signal and DC power supply
Driving power is generated as LED module power supply, feedback module generates feedback signal according to first control signal and driving power；Due to
Power supply conversion is carried out using DC decompression module, and pressure stabilizing is carried out by feedback module, improves the efficiency of LED drive device,
LED drive device is set to be not easy to generate heat, it is small in size, save electric energy；And it realizes the quick-fried sudden strain of a muscle of LED module, Qiang Guang, work light etc. and shines
Bright function, so that LED module lamplight brightness adapts to different application scenarios, illuminating effect is more bonded actual demand.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of a kind of structural schematic diagram for LED drive device that one embodiment of the invention provides；
Fig. 2 is a kind of another structural schematic diagram for LED drive device that one embodiment of the invention provides；
Fig. 3 is a kind of another structural schematic diagram for LED drive device that one embodiment of the invention provides；
Fig. 4 is a kind of another structural schematic diagram for LED drive device that one embodiment of the invention provides；
Fig. 5 is a kind of exemplary circuit schematic diagram for LED drive device that one embodiment of the invention provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, a kind of structural schematic diagram of LED drive device provided in an embodiment of the present invention, for ease of description,
Only the parts related to this embodiment are shown, and details are as follows:
A kind of LED drive device, including key module 11, control module 12, DC decompression module 13 and feedback module
14。
Key module 11, which is used to input to generate according to user, presses key control signal；Control module 12 and key module 11 connect
It connects, for generating first control signal and second control signal according to by key control signal；DC decompression module 13 and control mould
Block 12 connect, for according to second control signal, feedback signal and DC power supply generate driving power with to LED module 01 into
Row power supply；Feedback module 14 is connect with control module 12 and DC decompression module 13, for according to first control signal and driving
The electric current of power supply generates feedback signal.
In specific implementation, key module 11 includes key, it can be understood as the short circuit of a switch over the ground is opened by closure
Pass can drag down level, and control module 12 can identify and record keystroke sequence, and the first secondary control of key LED module 01 realizes strong light
Illumination, the second secondary control of key LED module 01 realize work optical illumination, and key third secondary control LED module 01 realizes quick-fried sudden strain of a muscle.
LED module 01 includes at least one LED light emitting diode, and LED module 01 is driven by driving power and shone.DC decompression module 13
It collectively forms with feedback module 14 as the constant-current drive circuit of LED module 01, when being shone by feedback regulation control LED module 01
Electric current, and due to using DC decompression module 13 carry out power supply conversion, and by feedback module 14 carry out feedback regulation with steady
Pressure, improves the efficiency of LED drive device, LED drive device is made to be not easy to generate heat, and saves electric energy.Optionally, the first control letter
Number and second control signal be PWM (Pulse Width Modulation, pulse width modulation) signal, pass through the first control letter
Number, second control signal and DC power supply generate driving power to drive LED module 01 to realize floodlighting, work illumination
Bright, quick-fried sudden strain of a muscle, wherein the operating current of LED module 01 is optionally 1000 milliamperes when floodlighting, work optical illumination when LED mould
The operating current of group 01 is optionally 350 milliamperes, and LED module 01 is optionally flashed by 9HZ when quick-fried sudden strain of a muscle.
Referring to Fig. 2, LED drive device further includes that battery detection module 16, electricity are shown in one of the embodiments,
Module 17 and battery module 100.
Battery module 100 is connect with DC decompression module 13, for generating DC power supply；Battery detection module 16 and control
Module 12 and battery module 100 connect, for detecting the voltage of DC power supply to generate voltage detection signal；Electricity quantity display module
17 connect with control module 12, for being shown according to display signal；Control module 12 is specifically used for believing according to by key control
Number and voltage detection signal generate second control signal, and according to voltage detection signal generate display signal；Wherein, signal is shown
Show that signal, third show signal and the 4th son display signal including the first son display signal, son two.
In specific implementation, battery detection module 16 detects to generate voltage detection signal the voltage of DC power supply,
Control module 12 is calculated according to the electricity that voltage detection signal carries out DC power supply.When control module 12 is according to voltage detection signal
When judging the voltage of DC power supply lower than the first preset voltage value, control module 12 generates default duty according to voltage detection signal
It is flashed than the second control signal with predeterminated frequency with controlling LED module 01, to alarm the under-voltage of battery；Work as control
Molding block 12 is greater than the first default charge value (corresponding first predeterminated voltage according to the calculated battery capacity of voltage detection signal
Value) it is less than or equal to generate the first son display signal when the second default charge value, battery capacity is greater than the second default charge value and is less than
The second son display signal is generated when presetting charge value equal to third, battery capacity is greater than the default charge value of third and is less than or equal to the 4th
Third is generated when default charge value shows that signal, battery capacity generate the 4th son display letter when being greater than four default charge values
Number, and pass through the first light emitting diode, the first light emitting diode, the first light emitting diode and the 4th respectively
Light emitting diode is shown that optionally, electricity quantity display module 17 includes the first light emitting diode, second luminous two
Pole pipe unit, third light emitting diode and the 4th light emitting diode, the first light emitting diode, second shine
Diode, third light emitting diode and the 4th light emitting diode are each including at least one light-emitting diodes
Pipe.Optionally, the first son display signal indicates that 25% electricity, the second son display signal indicate that 50% electricity, third are aobvious
Show that signal indicates that 75% electricity, the 4th son display signal indicate 100% electricity.
Optionally, charge management module 15 to battery module 100 carry out charging reach full of when, control module can be passed through
12, which control the 4th light emitting diode according to the second charging signals, prompts the state of 100 charging complete of battery module.
The electricity of DC power supply is shown by the voltage of real-time monitoring DC power supply, and in real time, and is owed in battery
Flashed the light emitting diode of the 4th light emitting diode when pressure, the case where electrolytic cell timely so as to user, in time
Charging is avoided excessively under-voltage and is overcharged, protects the service life of battery, improve the dependable with function of LED drive device.
Referring to Fig. 3, LED drive device further includes charge management module 15 in one of the embodiments,.
Charge management module 15 is connect with control module 12 and battery module 100, is used for according to charge power supply to battery mould
Block 100 charges, and generates the first charging signals and the second charging signals；Control module 12 is specifically used for according to voltage detecting
Signal, the first charging signals and the second charging signals generate display signal.
In specific implementation, charged by charge management module 15 to battery module 11, and in real time that charging situation is anti-
Control module of feeding 12 controls light emitting diode by control module 12 and shows to charging process and charging complete, to use
Family understands charged state in time, improves the practicability of LED drive device.
Referring to Fig. 4, LED drive device further includes voltage transformation module 18 in one of the embodiments,.
Voltage transformation module 18 is connect with control module 12, for generating control power supply to control mould according to DC power supply
Block 12 is powered.
In specific implementation, DC power supply is converted to right by the control power supply of stable low pressure by voltage transformation module 18
Control module 12 is powered, and is avoided powering to control module 12 using external power supply, is improved the stabilization of LED drive device
Property.
Referring to Fig. 5, battery detection module 16 includes first resistor R1, second resistance R2 in one of the embodiments,
And first capacitor C1.
The first end of first resistor R1 is connect with DC power supply, the second end of first resistor R1 and the first of second resistance R2
End is connected with the first end of first capacitor C1, and the second end of second resistance R2 and the second end of first capacitor C1 and power ground connect
It connects.
The first end of second resistance R2 is the voltage detection signal output end of battery detection module 16.
Referring to Fig. 5, charge management module 15 includes the first power management chip U3, the in one of the embodiments,
Three resistance R3, the second capacitor C2, third capacitor C3 and first diode D5.
The charging current configuration end PRG of first power management chip U3 is connect with the first end of 3rd resistor R3, the first electricity
The temperature end TEM of source control chip U3, the second end of the ground terminal GND and 3rd resistor R3 of the first power management chip U3 and electricity
It connects to source, the enable end CE of the first power management chip U3 is connect with charge power supply, the power supply of the first power management chip U3
End VCC is connect with the cathode of the first end of third capacitor C3 and first diode D5, the second end and power ground of third capacitor C3
Connection, the anode of first diode D5 are connect with charge power supply, the battery-end BAT and DC power supply of the first power management chip U3
It is connected with the first end of the second capacitor C2, the second end of the second capacitor C2 is connect with power ground.
The charging end of first power management chip U3For the first charging signals output end of charge management module 15.
First power management chip U3 to generator terminalFor the second charging signals output end of charge management module 15.
Referring to Fig. 5, in one of the embodiments, control module 12 include microprocessor U1, the 4th resistance R4 and
4th capacitor C4.
The power end VCC of microprocessor U1, the first end of the 4th resistance R4 and the first end and control of the 4th capacitor C4
Power supply connection, the second end of the 4th capacitor C4 are connect with power ground, the second end of the 4th resistance R4 and the first of microprocessor U1
The PA7 connection of data input/output terminal, the ground terminal GND of microprocessor U1 are connect with power ground.
The first data input/output terminal PA7 of microprocessor U1 is the key control signal input of control module 12.
The second data input/output terminal PA2 of microprocessor U1 is the second control signal output end of control module 12.
The third data input/output terminal PB7 of microprocessor U1 is the first control signal output end of control module 12.
The 4th data input/output terminal PA0 of microprocessor U1 is the first charging signal input terminal of control module 12.
The 5th data input/output terminal PA4 of microprocessor U1 is the second charging signal input terminal of control module 12.
The 6th data input/output terminal PB0 of microprocessor U1 is the first son display signal output end of control module 12,
The 7th data input/output terminal PB1 of microprocessor U1 is the second son display signal output end of control module 12, microprocessor
The 8th data input/output terminal PB2 of U1 be control module 12 third show signal output end, the 9th of microprocessor U1 the
Data input/output terminal PB1 is the 4th son display signal output end of control module 12.
The first son display signal output end, the second son display signal output end of control module 12, control of control module 12
Third of molding block 12 shows that the 4th son display signal output end of signal output end and control module 12 collectively forms control
The display signal output end of molding block 12.
Referring to Fig. 5, DC decompression module 13 includes the first decompression chip U2, the first electricity in one of the embodiments,
Feel L1, the 5th capacitor C5 and the 6th capacitor C6.
The voltage input end VIN of first decompression chip U2 is connect with the first end of DC power supply and the 5th capacitor C5, and the 5th
The second end of capacitor C5 is connect with power ground, and the ground terminal GND of the first decompression chip U2 is connect with power ground, the first decompression chip U2
Sensing end LX connect with the first end of the first inductance L1, the first end of the second end of the first inductance L1 and the 6th capacitor C6 connect
It connects, the second end of the 6th capacitor C6 is connect with power ground.
The feedback end FB of first decompression chip U2 is the feedback signal input terminal of DC decompression module 13.
The enable end EN of first decompression chip U2 is the second control signal input terminal of DC decompression module 13.
The first end of 6th capacitor C6 is the driving power output end of DC decompression module 13.
Referring to Fig. 5, feedback module 14 includes the first amplifier U4, the 7th capacitor C7, the in one of the embodiments,
Eight capacitor C8, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9 and the tenth resistance
R10。
The first end of 5th resistance R5 is connect with driving power anode, and the second end of the 5th resistance R5 is with the 6th resistance R6's
First end is connected with the first end of the 7th resistance R7, and the second end of the 6th resistance R6 is connect with power ground, and the of the 7th resistance R7
Two ends are connect with the output end Output of the first amplifier U4, and the of the power end VCC of the first amplifier U4 and the 7th capacitor C7
One end is connected with driving power anode, and the second end of the 7th capacitor C7 is connect with power ground, the homophase input of the first amplifier U4
End+and the first end of the 8th resistance R8 are connect with driving power cathode, the inverting input terminal-and the 9th resistance of the first amplifier U4
The first end of the first end of R9, the first end of the tenth resistance R10 and the 8th capacitor C8 connects, the ground terminal of the first amplifier U4
VDD, the second end of the 8th resistance R8, the second end of the 9th resistance R9 and the second end of the 8th capacitor C8 are connect with power ground.
The first end of 7th resistance R7 is the feedback signal output of feedback module 14.
The second end of tenth resistance R10 is the first control signal input terminal of feedback module 14.
Wherein, the first end of the 5th resistance R5 is connect with the first DC voltage, and optionally, the first DC voltage can be drive
Dynamic power supply.5th resistance R5 and the 6th resistance R6 divide the first DC voltage, pass through the first end of the 6th resistance R6
Voltage makes the first amplifier U4 export feedback signal.
Referring to Fig. 5, voltage transformation module 18 includes the first voltage stabilizing chip U5, the 9th electricity in one of the embodiments,
Hold C9 and the tenth capacitor C10.
The first end of the voltage input end VIN and the 9th capacitor C9 of first voltage stabilizing chip U5 are connect with DC power supply, and first
The voltage output end VOUT of voltage stabilizing chip U5 is connect with the first end of the tenth capacitor C10, the ground terminal GND of the first voltage stabilizing chip U5,
The second end of 9th capacitor C9 and the second end of the tenth capacitor C10 are connect with power ground.
The voltage output end VOUT of first voltage stabilizing chip U5 is the control power output end of voltage transformation module 18.
In specific implementation, the voltage of DC power supply can be converted and be stablized in 2.8V to micro- by the first voltage stabilizing chip U5
Processor U1 power supply.Electricity quantity display module 17 includes the first light emitting diode D1, the second light emitting diode D2, third light-emitting diodes
Pipe D3 and the 4th light emitting diode D4, respectively to 25% electricity of DC power supply, 50% electricity, 75% electricity and
100% electricity is shown that the 4th light emitting diode D4 can also indicate the state of battery charging complete.
It is briefly described below with reference to a kind of working principle of the Fig. 5 to LED drive device:
DC power supply VAA is carried out voltage conversion and pressure stabilizing to generate stable control power supply VCC by the first voltage stabilizing chip U5
The light emitting diode of microprocessor U1 and electricity quantity display module 17 are powered.First power management chip U3 is according to charging electricity
Source C+ charges to battery BAT, and generates the first charging signals from the charging end of the first power management chip U3It exports to micro- place
The 4th data input/output terminal PA0 of device U1 is managed, and generates the second charging signals from the first power management chip U3 to generator terminalIt exports to the 5th data input/output terminal PA4 of microprocessor U1, is controlled and sent out according to the first charging signals by microprocessor U1
Optical diode (the first light emitting diode D1 or the second light emitting diode D2 or third light emitting diode D3) carries out charging shape
State is shown；Microprocessor U1 controls the 4th light emitting diode D4 according to the second charging signals and carries out to the state of battery charging complete
Display.
Microprocessor U1 generates the first control letter by key control signal according to what its first data input/output terminal PA7 was inputted
Number and second control signal, first control signal is exported through the third data input/output terminal PB7 of microprocessor U1, then through the tenth
Resistance R10 is input to the inverting input terminal-of the first amplifier U4, and second control signal is inputted through the second data of microprocessor U1
Output end PA2 output, then the first decompression of enable end EN input chip U2 through the first decompression chip U2, the first decompression chip U2 root
According to second control signal make to can control the first decompression chip U2, the first inductance L1 and the 6th capacitor C6 to DC power supply VAA into
The conversion of row voltage, for output driving power supply to drive LED to shine, driving power is input to the same mutually defeated of the first amplifier U4 through LED
Enter to hold+, the first amplifier U4 is compared to the electric current and first control signal of driving power and amplifies and export feedback signal,
Feedback end FB input first decompression chip U2 of the feedback signal through the first decompression chip U2, the first decompression chip U2 is according to feedback letter
Number feedback regulation is carried out to driving power to generate the driving power of constant current, driving LED carry out strong light, work light, quick-fried sudden strain of a muscle and
Flashing shines.
The second aspect of the embodiment of the present invention provides a kind of LED lamp, including LED drive device as described above.
Quick-fried sudden strain of a muscle, flashing, Qiang Guang, work light etc. illumination functions and in real time may be implemented in the LED lamp of the embodiment of the present invention
It shows battery capacity, is adapted to different application scenarios, illuminating effect is made more to be bonded actual demand, and the drive efficiency that shines
It is high, it is not easy to generate heat, is easy to operate, compact structure saves electric energy, and longevity of service can freely adjust light on and off, strong and weak optical illumination
And flashing etc., it is user-friendly for operation and practical.
Although describing certain embodiments above with some the level of detail, those of skill in the art can be to institute
Disclosed embodiment makes many changes without departing from the scope of the present disclosure.Connection is with reference to (for example, attachment, coupling, connection
Deng) should be widely interpreted, and may include the intermediate member between the connection of element and relative motion between elements.Cause
This, connection reference does not necessarily imply that two elements are directly connected to/couple and are in fixed relationship each other.
" such as " use throughout the specification should be widely interpreted and for providing embodiment of the present disclosure
Non-limitative example, and the present disclosure is not limited to such examples.Be intended that includes in the foregoing description or to be shown in the accompanying drawings
All affairs should be construed as merely illustrative rather than restrictive.Can make variation in details or structure without
Deviate the disclosure.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.In addition, the specific name of each functional unit, module is also only for convenience of distinguishing each other,
The protection scope being not intended to limit this application.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of LED drive device, which is characterized in that the LED drive device includes:
The key module for pressing key control signal is generated for inputting according to user；
It is connect with the key module, for generating first control signal and second control signal by key control signal according to described
Control module；
It connect with the control module, is driven for being generated according to the second control signal, feedback signal and DC power supply
DC decompression module of the power supply to be powered to LED module；
It is connect with the control module and the DC decompression module, for according to the first control signal and driving electricity
The electric current in source generates the feedback module of the feedback signal.
2. LED drive device as described in claim 1, which is characterized in that the LED drive device further include:
It is connect with the DC decompression module, for generating the battery module of the DC power supply；
It is connect with the control module and the battery module, for detecting the voltage of the DC power supply to generate voltage detecting
The battery detection module of signal；
It is connect with the control module, the electricity quantity display module for being shown according to display signal；
The control module is specifically used for generating second control by key control signal and the voltage detection signal according to described
Signal processed, and the display signal is generated according to the voltage detection signal；Wherein, the display signal includes the first son display
Signal, the second son display signal, third show signal and the 4th son display signal.
3. LED drive device as claimed in claim 2, which is characterized in that the LED drive device further include:
It is connect with the control module and the battery module, for being charged according to charge power supply to the battery module,
And generate the charge management module of the first charging signals and the second charging signals；
The control module is specifically used for according to the voltage detection signal, first charging signals and second charging
Signal generates the display signal.
4. LED drive device as described in claim 1, which is characterized in that the LED drive device further include:
It is connect with the control module, for generating control power supply according to the DC power supply to supply the control module
The voltage transformation module of electricity.
5. LED drive device as claimed in claim 2, which is characterized in that the battery detection module includes first resistor,
Two resistance and first capacitor；
The first end of the first resistor is connect with the DC power supply, the second end of the first resistor and the second resistance
First end connected with the first end of the first capacitor, the second end of the second end of the second resistance and the first capacitor
It is connect with power ground；
The first end of the second resistance is the voltage detection signal output end of the battery detection module.
6. LED drive device as claimed in claim 3, which is characterized in that the charge management module includes the first power supply pipe
Manage chip, 3rd resistor, the second capacitor, third capacitor and first diode；
The charging current configuration end of first power management chip is connect with the first end of the 3rd resistor, first electricity
The second end and power ground at the temperature end of source control chip, the ground terminal of first power management chip and the 3rd resistor
Connection, the enable end of first power management chip are connect with charge power supply, the power end of first power management chip
It is connect with the cathode of the first end of the third capacitor and the first diode, the second end and power ground of the third capacitor
Connection, the anode of the first diode connect with the charge power supply, the battery-end of first power management chip with directly
Galvanic electricity source is connected with the first end of second capacitor, and the second end of second capacitor is connect with power ground；
The charging end of first power management chip is the first charging signals output end of the charge management module；
First power management chip is the second charging signals output end of the charge management module to generator terminal.
7. LED drive device as described in claim 1, which is characterized in that the control module includes microprocessor, the 4th electricity
Resistance and the 4th capacitor；
The first end and control electricity of the power end of the microprocessor, the first end of the 4th resistance and the 4th capacitor
Source connection, the second end of the 4th capacitor are connect with power ground, second end and the microprocessor of the 4th resistance
The connection of first data input/output terminal, the ground terminal of the microprocessor are connect with power ground；
First data input/output terminal of the microprocessor is the key control signal input of the control module；
Second data input/output terminal of the microprocessor is the second control signal output end of the control module；
The third data input/output terminal of the microprocessor is the first control signal output end of the control module；
4th data input/output terminal of the microprocessor is the first charging signal input terminal of the control module；
5th data input/output terminal of the microprocessor is the second charging signal input terminal of the control module；
6th data input/output terminal of the microprocessor is the first son display signal output end of the control module, described
7th data input/output terminal of microprocessor is the second son display signal output end of the control module, the microprocessor
The 8th data input/output terminal be the control module third show signal output end, the microprocessor the 9th number
According to the 4th son display signal output end that input/output terminal is the control module；
First son display signal output end of the control module, the second son of the control module show signal output end, institute
Third for stating control module shows signal output end, the 4th son display signal output end of the control module collectively forms institute
State the display signal output end of control module.
8. LED drive device as described in claim 1, which is characterized in that the DC decompression module includes the first decompression core
Piece, the first inductance, the 5th capacitor and the 6th capacitor；
The voltage input end of the first decompression chip is connect with the first end of the DC power supply and the 5th capacitor, described
The second end of 5th capacitor is connect with power ground, and the ground terminal of the first decompression chip is connect with power ground, first decompression
The sensing end of chip is connect with the first end of first inductance, and the of the second end of first inductance and the 6th capacitor
One end connection, the second end of the 6th capacitor are connect with power ground；
The feedback end of the first decompression chip is the feedback signal input terminal of the DC decompression module；
The enable end of the first decompression chip is the second control signal input terminal of the DC decompression module；
The first end of 6th capacitor is the driving power output end of the DC decompression module.
9. LED drive device as described in claim 1, which is characterized in that the feedback module includes the first amplifier, the 7th
Capacitor, the 8th capacitor, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance and the tenth resistance；
The first end of 5th resistance is connect with driving power anode, the second end of the 5th resistance and the 6th resistance
First end connected with the first end of the 7th resistance, the second end of the 6th resistance is connect with power ground, the described 7th
The second end of resistance is connect with the output end of first amplifier, the power end of first amplifier and the 7th capacitor
First end connected with the driving power anode, the second end of the 7th capacitor is connect with power ground, it is described first amplification
The non-inverting input terminal of device and the first end of the 8th resistance are connect with driving power cathode, and the reverse phase of first amplifier is defeated
Enter end to connect with the first end of the 9th resistance, the first end of the tenth resistance and the first end of the 8th capacitor,
The ground terminal of first amplifier, the second end of the 8th resistance, the second end of the 9th resistance and the 8th electricity
The second end of appearance is connect with power ground；
The first end of 7th resistance is the feedback signal output of the feedback module；
The second end of tenth resistance is the first control signal input terminal of the feedback module.
10. a kind of LED lamp, which is characterized in that the LED lamp includes the described in any item LED of the claims 1 to 9
Driving device.
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|---|---|---|---|
| CN201910762508.8A CN110493915B (en) | 2019-08-19 | 2019-08-19 | LED driving device and LED lamp |
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| CN201910762508.8A CN110493915B (en) | 2019-08-19 | 2019-08-19 | LED driving device and LED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111111016A (en) * | 2020-02-20 | 2020-05-08 | 深圳远致富海智能产业有限公司 | LED lamp appearance that moults |
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| CN110493915B (en) | 2024-01-16 |
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