CN105898926B - A kind of LED power system and its LED drive device - Google Patents
A kind of LED power system and its LED drive device Download PDFInfo
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- CN105898926B CN105898926B CN201610375350.5A CN201610375350A CN105898926B CN 105898926 B CN105898926 B CN 105898926B CN 201610375350 A CN201610375350 A CN 201610375350A CN 105898926 B CN105898926 B CN 105898926B
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- 206010049155 Visual brightness Diseases 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 22
- 230000008859 change Effects 0.000 description 8
- 239000003086 colorant Substances 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
The present invention relates to a kind of LED power system and its LED drive device, the LED drive device includes：First DC/DC boost modules；2nd DC/DC boost modules；Control module, for according to the pwm signal that monochrome information and/or color temperature information are the corresponding dutycycle of every group of LED string generation；First power management module, for controlling the first DC/DC boost modules that input voltage is converted into the first driving voltage for driving red LED lamp string, and control according to the pwm signal of red LED lamp string the driving current of red LED lamp string；Second source management module, for controlling the 2nd DC/DC boost modules that input voltage is converted into the second driving voltage for driving other groups of LED strings, and the driving current of other every group of LED strings is controlled according to the pwm signal of other every group of LED strings respectively；Second driving voltage is more than the first driving voltage.Implement technical scheme, improve the efficiency of power-supply system.
Description
Technical field
The present invention relates to field of LED illumination, more particularly to a kind of LED power system and its LED drive device.
Background technology
In today of energy increasingly depleted, people more focus on energy-saving and emission-reduction.The efficiency of lighting source is improved, can be effective
The tense situation of national electric energy is alleviated on ground, has very great significance to energy-saving and emission-reduction and the resource in the whole world and environmental protection tool.
Therefore, seek efficient lighting source and promote economize on electricity engineering, turn into the common active demand in the world.
In field of LED illumination, colour mixture technology is gradually applied.Colour mixture technology refers to by controlling a variety of different colours
LED string reaches the illuminating effect required for user, to improve the comfort level of user.But at present, due to red LED lamp bead
Itself the reason for causes its pressure drop, and comparatively speaking the pressure drop than other color LED lamp beads is much lower in 2.2V or so so that
Most of LED power system can not compatible polychrome lamp string well.In actual applications, generally require to carry out other decompressions
Processing, so greatly reduce the efficiency of power-supply system.
The content of the invention
The technical problem to be solved in the present invention is, for prior art above-mentioned efficiency it is low the defects of, there is provided Yi Zhongxiao
Rate high LED power system and its LED drive device.
The technical solution adopted for the present invention to solve the technical problems is：A kind of LED drive device is constructed, for driving
LED light source, the LED light source include at least two groups of LED strings, and one of which LED string is red LED lamp string, the LED
Drive device includes：
First DC/DC boost modules；
2nd DC/DC boost modules；
Control module, for being that every group of LED string produces corresponding dutycycle according to monochrome information and/or color temperature information
Pwm signal；
First power management module, for controlling the first DC/DC boost modules to be converted into being used to drive by input voltage
First driving voltage of dynamic red LED lamp string, and according to the drive of the pwm signal of the red LED lamp string control red LED lamp string
Streaming current；
Second source management module, for controlling the 2nd DC/DC boost modules to be converted into being used to drive by input voltage
The second driving voltage of other groups of LED strings is moved, and it is described other according to the control of the pwm signal of other every group of LED strings respectively
The driving current of every group of LED string；Second driving voltage is more than first driving voltage.
Preferably,
First power management module, it is additionally operable to respectively to the input voltage, first driving voltage and described
The driving current of red LED lamp string is sampled, and adjusts the first exported driving voltage and red LED according to sampled result
The driving current of lamp string；
The second source management module, it is additionally operable to respectively to the input voltage, second driving voltage and described
The driving current of other every group of LED strings is sampled, and according to sampled result adjust exported the second driving voltage and its
The driving current of its every group of LED string.
Preferably, the control module, it is additionally operable to first driving voltage, the second driving voltage, every group of LED string
Driving current sampled, and the dutycycle of exported pwm signal is adjusted according to sampled result.
Preferably, in addition to temperature detecting module, moreover,
The temperature detecting module, the control is sent to for detecting Current Temperatures, and by detected temperature value
Module；
The control module, it is additionally operable to adjust the dutycycle of exported pwm signal according to the temperature value detected.
The present invention also constructs a kind of LED power system, including at least one LED light source and corresponding with each LED light source
LED drive device, the LED drive device are the LED drive device described in any of the above item.
Preferably, in addition to terminal device, the LED drive device are also wireless including being connected with the control module
Module, moreover,
The terminal device, for receiving user to the monochrome information and/or color temperature information set by specific LED light source,
And wirelessly send it to corresponding LED drive device；
The wireless module, for wirelessly receiving set monochrome information and/or color temperature information, and by its
It is sent to the control module.
Preferably,
The terminal device, it is additionally operable to show digital-visual brightness adjustment curve, and receives user and regarded based on the numeral
Feel the monochrome information and/or color temperature information set by brightness adjustment curve.
Preferably,
The control module, it is additionally operable to the driving to first driving voltage, the second driving voltage, every group of LED string
Electric current is sampled；
The wireless module, it is additionally operable to send the sampled result of the control module to terminal device；
The terminal device, it is additionally operable to show received sampled result.
Preferably,
The wireless module, the temperature value for being additionally operable to be detected temperature detecting module are sent to terminal device；
The terminal device, it is additionally operable to show received temperature value.
Preferably, the wireless module is bluetooth module, WIFI module or ZigBee module.
Implement technical scheme, due to input voltage is converted into two-way respectively using two power management modules
DC voltage, wherein relatively low voltage all the way is used to drive red LED lamp string, higher voltage all the way is used to drive other colors
LED string, therefore, ideally solves the problems, such as not homochromy LED string pressure drop difference, to reach good compatibility.Moreover,
Due to decompression processing need not be carried out to the driving voltage in red LED lamp string again, therefore improve the efficiency of power-supply system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In accompanying drawing：
Fig. 1 is the building-block of logic of LED power system embodiment one of the present invention；
Fig. 2 is the building-block of logic of LED power system embodiment two of the present invention；
Fig. 3 A are the partial circuit diagrams of LED power system embodiment three of the present invention；
Fig. 3 B are the partial circuit diagrams of LED power system embodiment three of the present invention；
Fig. 4 is the axial cross-sectional views of LED power system of the present invention；
Fig. 5 is the decomposing schematic representation of LED power system of the present invention.
Embodiment
Fig. 1 is the building-block of logic of LED power system embodiment one of the present invention, and the LED power system of the embodiment includes
LED drive device 100 and LED light source 200, it should be noted that, although illustrate only a LED light source 200 and right with it in figure
The LED drive device 100 answered, it should be appreciated that in actual applications, for example, parlor that can be at home, dining room, bedroom etc. are multiplely
Side sets LED light source and its corresponding LED drive device respectively.In this embodiment, LED light source 200 includes red LED lamp string
210th, green LED lamp string 220, blue led lamp string 230.LED drive device 100 includes control module 110, the first power management
Module 121, second source management module 122, the first DC/DC boost modules 131, the 2nd DC/DC boost modules 132, wherein, control
Molding block 110 is used for according to the pwm signal that monochrome information and/or color temperature information are the corresponding dutycycle of every group of LED string generation.The
Input voltage (VCC) is converted into red for driving by one power management module 121 for the first DC/DC boost modules 131 of control
First driving voltage of color LED string 210, and red LED lamp string 210 is controlled according to the pwm signal of red LED lamp string 210
Driving current.Second source management module 122 is used to control the 2nd DC/DC boost modules 132 to be converted into being used for by input voltage
The second driving voltage of green LED lamp string 220 and blue led lamp string 230 is driven, and respectively according to green LED lamp string 220 and indigo plant
The pwm signal of color LED string 230 controls the driving current of the two LED strings.Driven moreover, the second driving voltage is more than first
Dynamic voltage.
In this embodiment, due to input voltage is converted into two-way direct current respectively using two power management modules
Pressure, wherein relatively low voltage all the way is used to drive red LED lamp string, higher voltage all the way is used for the LED for driving other colors
String, therefore, ideally solves the problems, such as not homochromy LED string pressure drop difference, to reach good compatibility.It is additionally, since
Without carrying out other decompression processing to red LED lamp driving voltage again, therefore improve the efficiency of power-supply system.
In a preferred embodiment, the first power management module 121 is additionally operable to respectively to input voltage, the first driving electricity
Pressure and the driving current of red LED lamp string are sampled, and adjust the first exported driving voltage and red according to sampled result
The driving current of color LED string, make the driving current constant of the first driving voltage and red LED lamp string in particular range；The
Two power management modules 122 are additionally operable to respectively to the driving current of input voltage, the second driving voltage and other every group of LED string
Sampled, and the driving current of the second exported driving voltage and other every group of LED string is adjusted according to sampled result, made
The driving current constant of second driving voltage and other every group of LED string is in particular range.
In this embodiment, the driving voltage and drive that two power management modules are exported to input voltage, each respectively
Streaming current is sampled, and automatic adjusument makes LED drive device be constantly in a stable state, when there is extreme case
When, when there is short circuit overcurrent such as circuit, can timely protection circuit, be unlikely to the damage of component.
Fig. 2 is the building-block of logic of LED power system embodiment two of the present invention, and the LED power system of the embodiment is compared
Embodiment shown in Fig. 1, in addition to terminal device 300, moreover, LED drive device 100 also includes wireless module 140 and temperature
Detection module 150, wireless module 140 are, for example, bluetooth module, WIFI module or ZigBee module.Wherein, the He of wireless module 140
Temperature detecting module 150 is connected with control module 110 respectively.Terminal device 300 be, for example, smart mobile phone, tablet personal computer, PC or
The terminal for being used to realize man-machine interaction of custom-made.Corresponding APP is installed by taking smart mobile phone as an example, on smart mobile phone, used
LED drive device corresponding to all LED light sources and the APP first can be associated by family, then can be realized by the APP each
The control of LED light source.
Terminal device 70 is used to receive user to the monochrome information set by specific LED light source (such as LED light source 200)
And/or color temperature information, and wirelessly send set monochrome information and/or color temperature information.Wireless module 50 is used for
Set monochrome information and/or color temperature information are wirelessly received, and is sent to control module 10, control module
10 so according to the configuration information of user produce each group of LED string corresponding to pwm signal.So, user can be by terminal
Equipment 300 in real time, freely changes colour temperature and/or the brightness of LED light source.Moreover, user can be right by terminal device 300
The control or networking of LED light source progress simple point-to-point (when control mode is bluetooth, WIFI or ZigBee) are (in controlling party
When formula is WIFI or ZigBee) control.
Preferably, terminal device 300 is additionally operable to show digital-visual brightness adjustment curve, and receives user and be based on the numeral
Monochrome information and/or color temperature information set by visual brightness adjustment curve.So, user to specific LED light source (such as
LED light source 200) brightness is set and/or during colour temperature, it can be configured based on digital-visual brightness adjustment curve, such regulation
Mode makes human eye feel pleasant.
In addition, the driving that control module 110 is additionally operable to the first driving voltage, the second driving voltage, every group of LED string is electric
Stream is sampled.Wireless module 140 is additionally operable to send the sampled result of control module 110 to terminal device 300.Terminal device
300 are additionally operable to show received sampled result.Further, temperature detecting module 150 is used to detect Current Temperatures, and by institute
The temperature value detected is sent to control module 100.The temperature value that wireless module 140 is additionally operable to be detected, which is sent to terminal, to be set
Standby 300.Terminal device 300 is additionally operable to show received temperature value.So, user can be by terminal device 300 to each LED
The running status of light source carries out the directly perceived, monitoring of real-time visual.Running status is for example including output current, output voltage, whole
The temperature of set system and working time (MCU internal clockings).
Further, control module 110 is additionally operable to adjust exported PWM according to sampled result and the temperature value detected
The dutycycle of signal.For example, control module 110 carries out a judgement according to the information that collects, judge it whether at one just
In true scope, if it exceeds or falls below given threshold value, it can attempt to change PWM waveform, so that circuit output or temperature
Convert, to reach setting value.If MCU can not change this situation, power management module can make corresponding reply and arrange
Apply, to protect whole system.
The circuit diagram of LED power system embodiment three of the present invention with reference to shown in Fig. 3 A, Fig. 3 B, control module mainly include
MCU (not shown), moreover, in this embodiment, input power is connected respectively between interface P2 and interface P1 pin 2 and pin 1
Anode and negative terminal, the voltage that the input power is exported are 8-30V DC voltage VCC.
First DC/DC boost modules include energy storage inductor L3, diode D3 and metal-oxide-semiconductor Q2, and energy storage inductor L3 one end
Connecting interface P2 pin 2, its other end connection diode D3 positive pole, diode D3 negative pole export the first driving voltage (R_
LED), i.e. connection red LED lamp string Broad_LED1C anode, red LED lamp string Broad_LED1C negative terminal connection MOS
Pipe Q3 drain electrode, metal-oxide-semiconductor Q3 source electrode are grounded by resistance R40, the R41 being in parallel.
First power management module includes model TPS61197 chip U4, moreover, chip U4 feeder ear (pin 16)
Connecting interface P2 pin 2, resistance R25 and resistance R28 are connected between interface P2 pin 2 and ground, chip U4 Enable Pin (pin 2)
Resistance R25 and resistance R28 tie point is connected, resistance R26, R30, R35 are connected between interface P2 pin 2 and ground, chip U4
Low input keyed end (pin 1) connection resistance R30 and resistance R35 tie point, chip U4 switching frequency sets end (pin
14) it is grounded by resistance R37, chip U4 loop compensation end (pin 6) is grounded by the resistance R39 and electric capacity C27 being in series, core
Piece U4 boosting reference edge (pin 5) is grounded by electric capacity C26, chip U4 PWM inputs (pin 3) connection MCU (not shown)
First PWM output ends (red), chip U4 boosting rectifier control end (pin 12) pass through resistance R29 connection metal-oxide-semiconductors Q2 grid, metal-oxide-semiconductor
Q2 drain electrode connection diode D3 positive pole, metal-oxide-semiconductor Q2 source electrode are grounded by resistance R33, the R34 being in parallel.Chip U4's
The source electrode that metal-oxide-semiconductor current detecting end (pin 9) passes through resistance R31 connection metal-oxide-semiconductors Q2.Resistance R27, R32, R36 are connected on diode
Between D3 negative pole and ground, chip U4 driving voltage test side (pin 10) connection resistance R32, R36 tie point.Chip U4's
Current regulation end (pin 8) connection metal-oxide-semiconductor Q3 grid, chip U4 maximum current set end (pin 7) to be connected by resistance R38
Metal-oxide-semiconductor Q3 source electrode.In addition, the first of resistance R27, R32 tie point (measure_V_61197) connection MCU (not shown)
Driving voltage test side.
2nd DC/DC boost modules include energy storage inductor L1, diode D1 and metal-oxide-semiconductor Q1, and energy storage inductor L1 one end
Connecting interface P1 pin 2, its other end connection diode D1 positive pole, diode D1 negative pole export the second driving voltage, i.e.
Three colors (white, green, blueness) LED string Broad_LED1A, Broad_LED1B, Broad_LED1D anode is connected respectively,
LED string Broad_LED1A negative terminal is grounded by resistance R17, the R18 being in parallel, LED string Broad_LED1B negative terminal
It is grounded by resistance R19, R20 for being in parallel, LED string Broad_LED1D negative terminal is connect by resistance R21, the R22 being in parallel
Ground.
Second source management module includes model TPS61196 chip U1, moreover, chip U1 feeder ear (pin 28)
Connecting interface P1 pin 2.Resistance R4, R8, R10 are connected between interface P1 pin 2 and ground, chip U1 low input locking
Hold (pin 1) connection resistance R8 and resistance R10 tie point.Resistance R1 and resistance R3 are connected between interface P1 pin 2 and ground, core
The tie point that piece U1 Enable Pin (pin 2) passes through resistance R13 connection resistance R1 and resistance R3.In addition, in this embodiment, in vain
The driving of color, green, blue led lamp string is specially using mode in parallel two-by-two：Chip U1 the first PWM inputs
(pin 3) and the 2nd PWM inputs (pin 4) connect the 2nd PWM output ends (white) of MCU (not shown) respectively, and the of chip U1
Three PWM inputs (pin 5) and the 4th PWM inputs (pin 6) connect MCU the 3rd PWM output ends (green), chip U1 respectively
The 5th PWM inputs (pin 7) and the 6th PWM inputs (pin 8) connection MCU the 4th PWM output ends (blue).Chip U1's
Boosting rectifier control end (pin 24) is by resistance R5 connection metal-oxide-semiconductors Q1 grid, metal-oxide-semiconductor Q1 drain electrode connection diode D1 positive pole,
Metal-oxide-semiconductor Q1 source electrode is grounded by resistance R9.Chip U1 metal-oxide-semiconductor current detecting end (pin 23) passes through resistance R7 connection metal-oxide-semiconductors
Q1 source electrode.Resistance R2, R6, R11 are connected between diode D1 negative pole and ground, chip U1 driving voltage test side (pin
19) resistance R6, R11 tie point are connected.Chip U1 loop compensation end (pin 20) passes through the resistance R12 and electric capacity that are in series
C10 is grounded.Chip U1 switching frequency sets end (pin 26) to be grounded by resistance R14.Chip U1 Voltage Reference end (pin 21)
It is grounded by electric capacity C11.Chip U1 the first current regulation end (pin 12) and the second current regulation end (pin 13) connection White LED
Lamp string Broad_LED1A negative terminal, chip U1 the 3rd current regulation end (pin 14) and the 4th current regulation end (pin 15) are respectively
Connect green LED lamp string Broad_LED1B negative terminal, chip U1 the 5th current regulation end (pin 16) and the 6th current regulation end
(pin 17) connects blue led lamp string Broad_LED1D negative terminal respectively.Chip U1 minimum feedback voltage sets end (pin 11) logical
Cross the resistance R16 being in parallel and electric capacity C13 ground connection.Chip U1 intersection short-circuit protection end (pin 9) is grounded by resistance R23.Core
Piece U1 electric current sets end (pin 10) to be grounded by resistance R24.In addition, resistance R2, R6 tie point (measure_V_61196)
Connect MCU the second driving voltage test side.
Illustrate the operation principle of the LED power system of the embodiment below：Chip U4 controls metal-oxide-semiconductor Q2's by its pin 12
Switch, so as to which input voltage (VCC) is converted into suitable first driving voltage, herein it should be noted that, by changing it
The electric capacity C26 connected on pin 5 capacitance can change the reference voltage of boosting, in addition, connected by changing on its pin 14
Resistance R37 resistance can change metal-oxide-semiconductor Q2 switching frequency.Similarly, chip U1 controls opening for metal-oxide-semiconductor Q1 by its pin 24
Close, so as to which input voltage (VCC) is converted into suitable second driving voltage, it is same it should be noted that, by changing its pin
The electric capacity C11 connected on 21 capacitance can change the reference voltage of boosting, in addition, by changing the electricity connected on its pin 26
Resistance R14 resistance can change metal-oxide-semiconductor Q1 switching frequency.Moreover, the first driving voltage is less than the second driving voltage.
Then, MCU receives monochrome information and color temperature information set by user, and root by wireless module (not shown)
Set monochrome information and color temperature information are converted into four road pwm signals according to mixed light principle, correspond to red, white, green, Lan Si respectively
Color LED string, and all the way pwm signal corresponding with red LED lamp string is sent into chip U4 pin 3, will be with White LED lamp string
Corresponding pwm signal all the way is sent into chip U1 pin 3, and all the way pwm signal corresponding with green LED lamp string is sent into chip
U1 pin 5, all the way pwm signal corresponding with blue led lamp string is sent into chip U1 pin 7.So, chip U4 passes through its pin
8 control metal-oxide-semiconductor Q3 switch, so as to the driving current of adjustable red LED lamp string, and the big of driving current is detected by pin 7
It is small.Chip U1 adjusts the driving current of white, green, blue three-color LED lamp string by its pin 12,14,16 respectively, and detects and often drive all the way
The size of streaming current.
In addition, chip U4 also detects input voltage by its pin 1, and locked when voltage is less than threshold value, threshold value
Size is relevant with resistance R26, R30, R35 resistance.Chip U4 also detects the electric current on metal-oxide-semiconductor Q2 by its pin 9, is drawn by it
Pin 10 detects the first driving voltage, and is protected when more than threshold value, the size of the threshold value and resistance R27, R32, R36 resistance
It is worth relevant.Similarly, chip U1 also detects input voltage by its pin 1, and is locked when voltage is less than threshold value, threshold value
Size is relevant with resistance R4, R8, R10 resistance.Chip U1 also detects the electric current on metal-oxide-semiconductor Q1 by its pin 23, is drawn by it
Pin 19 detects the second driving voltage, and is protected when more than threshold value, the size of the threshold value and resistance R2, R6, R11 resistance
It is relevant.The resistance R24 that chip U1 is also connected by changing its pin 10 resistance changes driving current rotection thresholds.In addition,
Chip U4, U1 be integrated with overcurrent protection, output short circuit protection, the protection of ISET shorted to earths, diode open-circuit and short-circuit protection,
LED opens a way and short-circuit protection, excess temperature breaking circuit.In addition, the capacitance for the electric capacity C11 that chip U1 is connected by changing its pin 21
The time of settable soft start.The electric capacity C11 that chip U4 is connected by changing its pin 26 capacitance can be set soft start when
Between.
It is last it should be noted that, in other embodiments, also can be selected two model TPS61196 chip, and by its
Principal and subordinate link is carried out, is specially：The pin 21 of master chip is connected with the pin 20 from chip, by the pin 27 of master chip with from chip
Pin 26 connects, and the pin 19 from chip will be connected at the measure_V_61196 in master chip.
With reference to shown in Fig. 4, Fig. 5, further, LED power system also include pedestal 40 corresponding with each LED light source,
Lid 50, pcb board 60 and filter 70.Preferably, in a ring, pedestal 40 and lid 50 are oppositely arranged for pedestal 40 and lid 50
And cooperate, after pedestal 40 and the assembling of lid 50, the middle part of both middle through-holes after assembling forms what is passed through for light
Passage H.Filter 70 is located on passage H, light is outwards projected.
In certain embodiments, pcb board 60 is located between pedestal 40 and lid 50, and group is carried out with pedestal 40 and lid 50
Dress, pedestal 40 and lid 50 after assembling are protected to pcb board 60.LED drive device is arranged on pcb board 60, and and LED
Light source 200 is electrically connected with, and LED drive device is managed control to the LED string of LED light source 200.
Preferably, LED light source 200 is located at side of the pedestal 40 away from lid 50, and light is from passage H and filter 70 to lid
The projects outside of body 50.Because LED light source 200 is installed from the outside of pedestal 40, when there is damage and needs to change in LED light source 200,
It is easy to remove from pedestal 40, is conveniently replaceable dismounting.When the integral installation of LED power system is to the position such as metope or ceiling, LED
Light source 200 can be with metope, ceiling etc. against positioning.Pedestal 40, lid 50, pcb board 60 and filter 70 and LED drive device
It is corresponding to form modular LED power system, it is easy to integrated marketing and use.
In certain embodiments, LED light source 200 is plate-like, is fitted on pedestal 40, the LED displacement of LED light source 200
Put with passage H position correspondences, allow light from passage H to the side of lid 50 project project.The LED light source 200 of tabular, can make
The side of LED light source 200 is bonded well with installation sites such as metope, ceilings.Preferably, on pedestal 40 be provided with
Deep gouge 43 corresponding to LED light source 200, the surface of pedestal 40 is countersunk in for LED light source 200, is easy to position.
In certain embodiments, the edge of the through hole at the middle part of pedestal 40 is provided with the tubular set being extended to the side of lid 50
Pipe 41, also in a ring, pcb board 60 is set on sleeve pipe 41 pcb board 60, is easy to the assembling of pcb board 60.In other embodiments,
Sleeve pipe 41 may also be arranged on lid 50, is arranged for the pcb board 60 of ring-type.Certainly, pcb board 60 or other shapes, pass through
Locking part is locked together on pedestal 40 or lid 50 and carries out assembling positioning.
Further, pcb board 60 is provided with the multiple flexible terminals 61 being electrically connected with LED light source 200, is set on pedestal 40
There is the avoidance mouth 42 stretched out for flexible terminal 61, flexible terminal 61, which stretches out, avoids mouth 42, is installed in LED light source 200 on pedestal
Afterwards, allow flexible terminal 61 is corresponding with LED light source 200 to connect.Preferably, each flexible terminal 61 is correspondingly arranged an avoidance mouth
42, allow between each flexible terminal 61 to produce interfering, avoiding contacting with each other when deformation be present causes short circuit.In other realities
Apply in example, avoid mouth 42 or a big opening, each flexible terminal 61 is stretched out by same avoidance mouth 42.Each flexible terminal
61 connections corresponding with one group of LED string of LED light source 200, when LED light source 200 only includes one group of LED string, on pcb board 60
Also a flexible terminal 61 can be provided only with.Certainly, the flexible terminal 61 on pcb board 60 also can be replaced the structures such as socket,
LED light source 200 turns on after assembling with socket.
In certain embodiments, the outer ring of filter 70 is provided with the microscope base 71 installed for filter 70, and microscope base 71 is arranged on sleeve pipe
On 41.Microscope base 71 can facilitate the installation of filter 70, allow filter 70 can be located on passage H.Preferably, microscope base 71 in a ring, covers
It is located at the outer ring of filter 70.In other embodiments, the installation installed for filter 70 can be also set on lid 50 or sleeve pipe 41
Position.
Further, filter 70 protrudes from the outside of lid 50 by passage H and set, and allows light can be to lid 50 after filter 70
The area radiation of side away from pedestal 40, increase the radiation scope of light.In other embodiments, filter 70 also can be non-bulging
In the outer surface of lid 50.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, any bun made
Change, equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (7)
1. a kind of LED power system, including at least one LED light source and LED drive device corresponding with each LED light source, seat
Body, lid, pcb board and filter, the LED light source includes at least two groups of LED strings, and one of which LED string is red
LED string, it is characterised in that also include：
Terminal device, for showing digital-visual brightness adjustment curve, and receive user and be based on the digital-visual brightness adjustment
Curve is wirelessly sent it to corresponding to the monochrome information and/or color temperature information set by specific LED light source
LED drive device；
Moreover, the pedestal and the lid are oppositely arranged, and both of which carries middle through-hole, and the pcb board is located in described
Between pedestal and the lid, the filter is located on the passage of the middle through-hole formation of the pedestal and the lid；It is described
LED light source is plate-like, and fits in side of the pedestal away from the lid, the light of the LED light source by the passage,
The filter projects to outside the lid；
The LED drive device is arranged on pcb board, and including：
First DC/DC boost modules；
2nd DC/DC boost modules；
Control module, for being believed according to the PWM that monochrome information and/or color temperature information are the corresponding dutycycle of every group of LED string generation
Number；
First power management module, for control the first DC/DC boost modules by input voltage be converted into be used for drive it is red
First driving voltage of color LED string, and control the driving of the red LED lamp string electric according to the pwm signal of red LED lamp string
Stream；
Second source management module, for controlling the 2nd DC/DC boost modules to be converted into being used to drive it by input voltage
It organizes the second driving voltage of LED string, and respectively according to described other every groups of the pwm signal of other every group of LED strings control
The driving current of LED string；Second driving voltage is more than first driving voltage.
2. LED power system according to claim 1, it is characterised in that
First power management module, it is additionally operable to respectively to the input voltage, first driving voltage and the red
The driving current of LED string is sampled, and adjusts the first exported driving voltage and red LED lamp string according to sampled result
Driving current；
The second source management module, it is additionally operable to respectively to the input voltage, second driving voltage and described other
The driving current of every group of LED string is sampled, and adjusts exported the second driving voltage and other every according to sampled result
The driving current of group LED string.
3. LED power system according to claim 1, it is characterised in that
The control module, be additionally operable to first driving voltage, the second driving voltage, every group of LED string driving current
Sampled, and the dutycycle of exported pwm signal is adjusted according to sampled result.
4. LED power system according to claim 1, it is characterised in that the LED drive device also includes temperature detection
Module, moreover,
The temperature detecting module, the control module is sent to for detecting Current Temperatures, and by detected temperature value；
The control module, it is additionally operable to adjust the dutycycle of exported pwm signal according to the temperature value detected.
5. LED power system according to claim 1, it is characterised in that
The wireless module, it is additionally operable to send the sampled result of the control module to terminal device；
The terminal device, it is additionally operable to show received sampled result.
6. LED power system according to claim 1, it is characterised in that
The wireless module, the temperature value for being additionally operable to be detected temperature detecting module are sent to terminal device；
The terminal device, it is additionally operable to show received temperature value.
7. LED power system according to claim 1, it is characterised in that the wireless module is bluetooth module, WIFI moulds
Block or ZigBee module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375350.5A CN105898926B (en) | 2016-05-30 | 2016-05-30 | A kind of LED power system and its LED drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375350.5A CN105898926B (en) | 2016-05-30 | 2016-05-30 | A kind of LED power system and its LED drive device |
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| Publication Number | Publication Date |
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| CN105898926A CN105898926A (en) | 2016-08-24 |
| CN105898926B true CN105898926B (en) | 2018-02-16 |
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| CN201610375350.5A Expired - Fee Related CN105898926B (en) | 2016-05-30 | 2016-05-30 | A kind of LED power system and its LED drive device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793326B (en) * | 2017-01-05 | 2018-09-21 | 叶新怡 | The multispectral LED light source of high-color rendering, museum exhibits exhibition headlamp and arrange exhibits and means of illumination |
| CN108462389A (en) * | 2017-02-21 | 2018-08-28 | 辽宁壮龙无人机科技有限公司 | The power management module and unmanned plane of electric power management circuit and the application circuit |
| CN112349239A (en) * | 2019-07-22 | 2021-02-09 | 深圳蓝普科技有限公司 | Energy-saving power supply circuit of LED display screen and display screen |
| CN111800906A (en) * | 2020-07-03 | 2020-10-20 | 广东奥普特科技股份有限公司 | Control circuit and control method for detecting light source parameters |
| CN115002959B (en) * | 2022-05-23 | 2023-04-07 | 深圳市鸿远微思电子有限公司 | Digital dimming LED lamp driving circuit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4001856B2 (en) * | 2003-10-30 | 2007-10-31 | ローム株式会社 | LIGHT EMITTING ELEMENT DRIVE DEVICE, DISPLAY MODULE HAVING LIGHT EMITTING ELEMENT DRIVE DEVICE, AND ELECTRONIC DEVICE HAVING DISPLAY MODULE |
| JP4040589B2 (en) * | 2004-03-15 | 2008-01-30 | ローム株式会社 | LIGHT EMITTING ELEMENT DRIVE DEVICE AND PORTABLE DEVICE HAVING LIGHT EMITTING ELEMENT |
| KR101119261B1 (en) * | 2009-01-14 | 2012-03-16 | 삼성전자주식회사 | Driver for light source |
| JP4680306B2 (en) * | 2009-02-05 | 2011-05-11 | 三菱電機株式会社 | Power supply circuit and lighting device |
| CN101616524B (en) * | 2009-07-29 | 2012-11-28 | 广州复旦奥特科技股份有限公司 | Commercial LED illumination driver |
| CN201813591U (en) * | 2010-06-02 | 2011-04-27 | 杭州奥能照明电器有限公司 | Wireless drive system for LED (light emitting diode) |
| US8917026B2 (en) * | 2011-12-20 | 2014-12-23 | Lumenetix, Inc. | Linear bypass electrical circuit for driving LED strings |
| US9336704B2 (en) * | 2013-10-18 | 2016-05-10 | Sct Technology, Ltd. | Apparatus and method for powering LED driver |
| CN204377224U (en) * | 2015-02-10 | 2015-06-03 | 深圳市昇润科技有限公司 | Smart bluetooth LED lamp |
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