CN203734880U - High voltage integration AC LED multistage linear drive device - Google Patents
High voltage integration AC LED multistage linear drive device Download PDFInfo
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- CN203734880U CN203734880U CN201320811473.0U CN201320811473U CN203734880U CN 203734880 U CN203734880 U CN 203734880U CN 201320811473 U CN201320811473 U CN 201320811473U CN 203734880 U CN203734880 U CN 203734880U
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Abstract
The utility model provides a high voltage integration AC LED multistage linear drive device. The device comprises a rectification circuit, a plurality of LED modules, a plurality of on-off circuits, a plurality of MOS tubes, a power-on protective circuit, a power-off protective circuit, and a constant current source. The input end of the rectification circuit is connected to an AC power supply. The MOS tubes are separately connected to the output ends of the LED modules, the on-off circuits, the power-on protective circuit and the power-off protective circuit. The high voltage integration AC LED multistage linear drive device is high in integration degree, high in power factor, long in service lifetime, low in cost, stable and reliable in usage, and directly driven by the AC high voltage.
Description
Technical field
The utility model is the integrated AC LED multistage of a kind of high pressure linear actuating device, belongs to the innovative technology of the integrated AC LED multistage of high pressure linear actuating device.
Background technology
LED light-emitting diode, is a kind of semiconductor subassembly that can convert electrical energy into luminous energy, has that volume is little, power consumption is low, a long service life, the advantage such as environmental and durable, is widely used in the fields such as lighting, display, traffic lights.With respect to traditional incandescent lamp, the element that light-emitting diode is one-way conduction, and light-emitting diode needs suitable DC low-voltage to drive luminous.In addition, light-emitting diode has negative temperature characteristic and is known by LED voltage-current characteristic, and less voltage fluctuation meeting causes the curent change that LED is very large, and life-span and luminous efficiency to LED all impact.If therefore light-emitting diode will be applied in to electric main, need between alternating current and LED load, add that AC-DC transducer could realize DC driven.General design as shown in Figure 1.This basic LED drive circuit, comprises AC-DC or DC-DC transducer.But, in these drive circuit, all using inductance or large electric capacity, this has increased weight, volume and cost to light fixture undoubtedly.And electrochemical capacitor life temperature influence is large, become the bottleneck in LED driving power life-span, the use of inductance also can bring serious EMI problem.If directly use alternating current driving LED (AC-LED), do not need so to carry out AC-DC conversion, thereby solve the series of problems that AC-DC change-over circuit brings.
Traditional AC-LED adopts micromeritics that matrix form is arranged to integrate and forms, and adds in design bridge circuit, as long as alternating current is added in to the two ends of AC-LED, electric current just can two-way flow, makes LED luminous.But such LED power factor is low, and from LED volt-ampere characteristic, less voltage fluctuation, just can cause very large curent change (current/voltage changes 10%, curent change 60%), and this life-span and luminous efficiency on LED has all caused impact.
Summary of the invention
The purpose of this utility model be to consider the problems referred to above and provide a kind of integrated level high, directly with ac high-voltage drive, power factor is high, the life-span is long, cost is low, use the integrated AC LED multistage of reliable and stable high pressure linear actuating device.The utility model is reasonable in design, convenient and practical.
The technical solution of the utility model is: the integrated AC LED multistage of pressure of the present utility model linear actuating device; include rectification circuit, some LED modules, somely open breaking circuit, some metal-oxide-semiconductors, open protective circuit, cut-off protection circuit and constant-current source; wherein the input of rectification circuit is connected with AC power, metal-oxide-semiconductor respectively with the output of LED module, open breaking circuit, open protective circuit and be connected with cut-off protection circuit.
Above-mentioned some LED modules comprise the LED module being connected successively, the 2nd LED module, the 3rd LED module, the 4th LED module, some metal-oxide-semiconductors include the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, some breaking circuits of opening include first and open breaking circuit, second opens breaking circuit, the 3rd opens breaking circuit and the 4th opens breaking circuit, a wherein LED module, the 2nd LED module, the 3rd LED module, the 4th LED module is connected successively, and one end of a LED module is connected with rectification circuit, with open that protective circuit is connected and with first open breaking circuit, second opens breaking circuit, the 3rd opens breaking circuit and the 4th opens breaking circuit and is connected, one end of the 2nd LED module is connected with the first metal-oxide-semiconductor, the other end of the 2nd LED module is connected with the second metal-oxide-semiconductor, one end of the 3rd LED module is connected with the second metal-oxide-semiconductor, the other end of the 3rd LED module is connected with the 3rd metal-oxide-semiconductor, one end of the 4th LED module is connected with the 3rd metal-oxide-semiconductor, and the other end of the 4th LED module is connected with the 4th metal-oxide-semiconductor, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor all with open protective circuit and be connected, be connected and be connected with constant-current source with cut-off protection circuit.
The output of each group of LED module is received in the drain electrode of above-mentioned the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, and source electrode is received constant-current source, and grid is connected to opens protective circuit.
The utility model because employing comprises ac power input end, rectification circuit, opens protective circuit, LED module, open breaking circuit, metal-oxide-semiconductor, cut-off protection circuit and constant-current source and form the structure in loop.The utility model is cancelled electric capacity, inductance element, has significantly reduced the volume of LED lamp illumination; Compared with other LED lamp Lighting Design schemes, the utility model adopts AC power directly to drive, and makes circuit more simple and reliable, is convenient to the large-scale integrated of LED lamp illumination; The scheme that classification drives also makes circuit power factor reach 0.99, and power drives efficiency reaches 0.9, total harmonic distortion
10%, extremely low electromagnetic interference (EMI) emissions.The utility model is directly to be driven by AC power, do not need to use the energy storage electronic components such as any transformer, capacitor and inductor, therefore do not have the low problem of power factor, and power factor corrector must be additionally set, be significantly to reduce electronic component and the volume that the utility model uses, meet the demand of AC LED drive circuit miniaturization.The utility model is that a kind of design is ingenious, function admirable, the integrated AC LED multistage of convenient and practical high pressure linear actuating device.
Brief description of the drawings
Fig. 1 is that traditional LED high frequency chopping drives design schematic diagram.
Fig. 2 is schematic diagram of the present utility model.
Embodiment
Embodiment:
Structural representation of the present utility model as shown in Figure 2; the integrated AC LED multistage of pressure of the present utility model linear actuating device; include rectification circuit 102, some LED modules, somely open breaking circuit, some metal-oxide-semiconductors, open protective circuit 115, cut-off protection circuit 116 and constant-current source 117; wherein the input of rectification circuit 102 is connected with AC power 101, metal-oxide-semiconductor respectively with the output of LED module, open breaking circuit, open protective circuit 115 and be connected with cut-off protection circuit 116.
Above-mentioned some LED modules comprise the LED module 103 being connected successively, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106, some metal-oxide-semiconductors include the first metal-oxide-semiconductor 108, the second metal-oxide-semiconductor 110, the 3rd metal-oxide-semiconductor 112 and the 4th metal-oxide-semiconductor 114, some breaking circuits of opening include first and open breaking circuit 107, second opens breaking circuit 109, the 3rd opens breaking circuit 111 and the 4th opens breaking circuit 113, a wherein LED module 103, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106 is connected successively, and one end of a LED module 103 is connected with rectification circuit 102, with open that protective circuit 115 is connected and with first open breaking circuit 107, second opens breaking circuit 109, the 3rd opens breaking circuit 111 and the 4th opens breaking circuit 113 and is connected, one end of the 2nd LED module 104 is connected with the first metal-oxide-semiconductor 108, the other end of the 2nd LED module 104 is connected with the second metal-oxide-semiconductor 110, one end of the 3rd LED module 105 is connected with the second metal-oxide-semiconductor 110, the other end of the 3rd LED module 105 is connected with the 3rd metal-oxide-semiconductor 112, one end of the 4th LED module 106 is connected with the 3rd metal-oxide-semiconductor 112, and the other end of the 4th LED module 106 is connected with the 4th metal-oxide-semiconductor 114, the first metal-oxide-semiconductor 108, the second metal-oxide-semiconductor 110, the 3rd metal-oxide-semiconductor 112 and the 4th metal-oxide-semiconductor 114 all with open protective circuit 115 and be connected, be connected and be connected with constant-current source 117 with cut-off protection circuit 116.Opening protective circuit input is connected with the input of opening breaking circuit.Ensure in circuit debugging moment, ensure not overvoltage in loop, overcurrent not.Cut-off protection circuit input is connected with the output of opening protective circuit, and output is connected with metal-oxide-semiconductor, ensures that, in the time that LED module switches, the reverse voltage of generation can not damage metal-oxide-semiconductor.The breaking circuit of opening of the present utility model adopts segmentation to open the control mode of LED module.Rectification circuit of the present utility model, open protective circuit, open breaking circuit and cut-off protection circuit uses resistance and semiconductor device completely.The protective circuit of opening of the present utility model is moment overvoltage protection.Electric current constant current value of the present utility model can be realized by regulating resistance.Method of the present utility model adopts piecewise linearity to drive.
In the present embodiment, above-mentioned AC power 101 is used AC220V power supply.LED driving power of the present utility model uses AC220V/110V power supply, directly uses alternating current, and rectification circuit 102 is converted to direct current energy the AC energy of AC power 101.Rectification circuit 102 inputs connect AC power and AC power are converted to pulsating voltage, and are exported by its output.The utility model directly drives by 220V/110V AC AC power, does not need transformer to change high voltage electric energy into low-voltage electric energy.
The above-mentioned protective circuit 115 of opening comprises voltage stabilizing didoe and series resistance.Open protective circuit 115 and suppressed the impact of peak voltage on subsequent conditioning circuit, mainly comprise voltage stabilizing didoe and series resistance
An above-mentioned LED module 103, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106 all comprise several LED light sources, and several LED light sources adopt series system to connect.LED module input is connected with the output of rectification circuit, and output is connected with the drain electrode of metal-oxide-semiconductor, accepts pulsating voltage and is subject to turning on and off of its loop, place of metal-oxide-semiconductor control from the output of rectification circuit, controls luminous.
The order that the number of the LED light source that an above-mentioned LED module 103, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106 comprise starts from high to low successively according to voltage is respectively 7,6,6 and 5, after a LED module 103, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106 outputs respectively with metal-oxide-semiconductor with open breaking circuit and be connected.
Above-mentioned first opens breaking circuit 107, second opens breaking circuit 109, the 3rd and opens breaking circuit 111 and the 4th and open breaking circuit 113 by triode and resistance composition.Open breaking circuit input and be connected with the output of rectification circuit, output is connected with metal-oxide-semiconductor.According to voltage swing, control turning on and off of metal-oxide-semiconductor, thus other loops of in good time shutoff.Not overvoltage when opening protective circuit and ensureing to connect, overcurrent not; The back-pressure that cut-off protection circuit produces while ensureing the switching of LED module can not damaged metal-oxide-semiconductor.
In the present embodiment, the output of each group of LED module is received in the drain electrode of above-mentioned the first metal-oxide-semiconductor 108, the second metal-oxide-semiconductor 110, the 3rd metal-oxide-semiconductor 112 and the 4th metal-oxide-semiconductor 114, and source electrode is received constant-current source 117, and grid is connected to opens protective circuit 115.Metal-oxide-semiconductor is according to the turn-on and turn-off in loop, grid voltage control place.When metal-oxide-semiconductor conducting, electric current forms staged constant current output, and in the time that voltage is low, operating current is little, and when voltage is large, operating current is large, thereby obtains higher PF value.Meanwhile, circuit, according to the size of input voltage, changes the series LED module quantity of access constant-current source 117, accesses LED lamp pearl quantity few when low pressure, all accesses, thereby can reduce the voltage loss on constant-current source 117 when high pressure, improves drive efficiency.
Above-mentioned constant-current source comprises triode and resistance, and the base stage of triode is connected with LED module, grounded emitter, collector electrode and resistance parallel connection.Resistance other end ground connection.By flowing out conducting and the shutoff of Current Control triode of LED module, thereby resistance sizes in control circuit ensures sine ladder wave in loop.
Operation principle of the present utility model is as follows: as shown in Figure 2, in the time that voltage increases gradually and reaches a certain size, a LED module 103 starts, but electric current only flows to constant-current source 117 by the first metal-oxide-semiconductor 108, and now size of current is set by R1, R2, R3 and R4.
When voltage continues to increase, the 2nd LED module 104 starts, opening breaking circuit 107 by first turn-offs being connected on the first metal-oxide-semiconductor 108 that a LED module 103 exports, the one LED module 103 and the 2nd LED module 104 are connected luminous, the second metal-oxide-semiconductor 110 conductings, now electric current is set by R2, R3 and R4, and the first metal-oxide-semiconductor 108 ends, and electric current only flows to constant-current source 117 by the second metal-oxide-semiconductor 110;
When voltage continues to increase, the 3rd LED module 105 starts, opening breaking circuit 109 by second turn-offs the second metal-oxide-semiconductor 110 that is connected on the 2nd LED module 104 outputs, the conducting of connecting of the one LED module 103, the 2nd LED module 104, the 3rd LED module 105 is luminous, the 3rd metal-oxide-semiconductor 112 conductings, now electric current is set by R3 and R4, and the first metal-oxide-semiconductor 108, the second metal-oxide-semiconductor 110 all end, and electric current only flows to constant-current source 117 by the 3rd metal-oxide-semiconductor 112.
When voltage continues to increase, the 4th LED module 106 starts, opening breaking circuit 111 by the 3rd turn-offs the 3rd metal-oxide-semiconductor 112 that is connected on the 3rd LED module 105 outputs, the conducting of connecting of the one LED module 103, the 2nd LED module 104, the 3rd LED module 105, the 4th LED module 106 is luminous, the 4th metal-oxide-semiconductor 114 conductings, the first metal-oxide-semiconductor 108, the second metal-oxide-semiconductor 110, the 3rd metal-oxide-semiconductor 112 all end, and size of current is set by R4, and electric current only flows to constant-current source 117 by the 4th metal-oxide-semiconductor 114.In the time of voltage drop, successively close the 4th LED module 10, the 3rd LED module 105, the 2nd LED module 104, a LED module 103, electric current also successively declines.
The utility model is directly driven by alternating voltage, there is no electric capacity and inductance or other electronic components variation at prior art.
These are only preferred embodiment of the present utility model, but design concept of the present utility model is not limited to this, all insubstantial modifications of utilizing this design to make the utility model, within also all falling into protection range of the present utility model.
Claims (8)
1. the integrated AC LED multistage of a high pressure linear actuating device; it is characterized in that including rectification circuit, some LED modules, somely open breaking circuit, some metal-oxide-semiconductors, open protective circuit, cut-off protection circuit and constant-current source; wherein the input of rectification circuit is connected with AC power, metal-oxide-semiconductor respectively with the output of LED module, open breaking circuit, open protective circuit and be connected with cut-off protection circuit.
2. the integrated AC LED multistage of high pressure according to claim 1 linear actuating device, is characterized in that above-mentioned some LED modules comprise the LED module being connected successively, the 2nd LED module, the 3rd LED module, the 4th LED module, some metal-oxide-semiconductors include the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, some breaking circuits of opening include first and open breaking circuit, second opens breaking circuit, the 3rd opens breaking circuit and the 4th opens breaking circuit, a wherein LED module, the 2nd LED module, the 3rd LED module, the 4th LED module is connected successively, and one end of a LED module is connected with rectification circuit, with open that protective circuit is connected and with first open breaking circuit, second opens breaking circuit, the 3rd opens breaking circuit and the 4th opens breaking circuit and is connected, one end of the 2nd LED module is connected with the first metal-oxide-semiconductor, the other end of the 2nd LED module is connected with the second metal-oxide-semiconductor, one end of the 3rd LED module is connected with the second metal-oxide-semiconductor, the other end of the 3rd LED module is connected with the 3rd metal-oxide-semiconductor, one end of the 4th LED module is connected with the 3rd metal-oxide-semiconductor, and the other end of the 4th LED module is connected with the 4th metal-oxide-semiconductor, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor all with open protective circuit and be connected, be connected and be connected with constant-current source with cut-off protection circuit.
3. the integrated AC LED multistage of high pressure according to claim 1 linear actuating device, is characterized in that above-mentioned AC power is used AC220V/110V power supply.
4. the integrated AC LED multistage of high pressure according to claim 1 linear actuating device, is characterized in that the above-mentioned protective circuit of opening comprises voltage stabilizing didoe and series resistance.
5. the integrated AC LED multistage of high pressure according to claim 2 linear actuating device, it is characterized in that an above-mentioned LED module, the 2nd LED module, the 3rd LED module, the 4th LED module all comprise several LED light sources, and several LED light sources adopt series system to connect.
6. the integrated AC LED multistage of high pressure according to claim 2 linear actuating device, it is characterized in that the order that the number of the LED light source that an above-mentioned LED module, the 2nd LED module, the 3rd LED module, the 4th LED module comprise starts from high to low successively according to voltage is respectively 7,6,6 and 5, after a LED module, the 2nd LED module, the 3rd LED module, the 4th LED module output respectively with metal-oxide-semiconductor with open breaking circuit and be connected.
7. the integrated AC LED multistage of high pressure according to claim 2 linear actuating device, is characterized in that above-mentioned first opens breaking circuit, second and open breaking circuit, the 3rd and open breaking circuit and the 4th and open breaking circuit by triode and resistance composition.
8. the integrated AC LED multistage of high pressure according to claim 2 linear actuating device; it is characterized in that the drain electrode of above-mentioned the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor receives the output of each group of LED module; source electrode is received constant-current source, and grid is connected to opens protective circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320811473.0U CN203734880U (en) | 2013-12-11 | 2013-12-11 | High voltage integration AC LED multistage linear drive device |
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| CN201320811473.0U CN203734880U (en) | 2013-12-11 | 2013-12-11 | High voltage integration AC LED multistage linear drive device |
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| CN203734880U true CN203734880U (en) | 2014-07-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634991A (en) * | 2013-12-11 | 2014-03-12 | 广东工业大学 | High-voltage integrated alternating-current LED multistage linear drive device |
| CN105451410A (en) * | 2014-09-09 | 2016-03-30 | 普诚科技股份有限公司 | LED driving device and method for improving current harmonic distortion of LED driving device |
| CN108543218A (en) * | 2018-05-03 | 2018-09-18 | 广东工业大学 | A kind of low frequency micro-current stimulator |
-
2013
- 2013-12-11 CN CN201320811473.0U patent/CN203734880U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634991A (en) * | 2013-12-11 | 2014-03-12 | 广东工业大学 | High-voltage integrated alternating-current LED multistage linear drive device |
| CN105451410A (en) * | 2014-09-09 | 2016-03-30 | 普诚科技股份有限公司 | LED driving device and method for improving current harmonic distortion of LED driving device |
| CN105451410B (en) * | 2014-09-09 | 2017-12-22 | 普诚科技股份有限公司 | LED driving device and method for improving current harmonic distortion of LED driving device |
| CN108543218A (en) * | 2018-05-03 | 2018-09-18 | 广东工业大学 | A kind of low frequency micro-current stimulator |
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