CN202172507U

CN202172507U - High power LED single driving power supply system

Info

Publication number: CN202172507U
Application number: CN2011202249025U
Authority: CN
Inventors: 陈长生
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-29
Filing date: 2011-06-29
Publication date: 2012-03-21
Anticipated expiration: 2021-06-29

Abstract

The utility model relates to a high power LED single driving power supply system, comprising an external circuit, a driving power supply and a plurality of high power LED lamps, wherein the driving power supply is serially connected in the external circuit, the driving power supply filters, rectifies and reduces voltage of the current in the external circuit, the driving power supply isolates the external circuit into a commercial power circuit and a light source circuit, the commercial power circuit is connected with an external commercial power, the high power LED lamps are parallelly connected in the light source circuit, the driving power supply comprises an electromagnetic compatibility module, a rectification module, a constant voltage control module and a high frequency pulse-width modulation module, and the electromagnetic compatibility module, the rectification module, the constant voltage control module and the high frequency pulse-width modulation module are successively serially connected.

Description

The single driving power source system of a kind of great power LED

Technical field

The utility model relates to a kind of driving power source system of great power LED, is meant especially a kind ofly single driving power only is set in circuit just can drives the system that several great power LEDs are worked simultaneously simultaneously.

Background technology

As everyone knows, LED is light-emitting diode just, is a kind of solid-state semiconductor device, and it can directly be converted into luminous energy with electricity.So the LED productive life that has been applied in people widely such as the characteristics that harmful substance is convenient to reclaim because that the LED luminous element has in concrete the use is energy-conservation, long service life, inside do not have mercury etc. have now suffered; The internal characteristics of LED has determined that it is that optimal light source removes to replace traditional light source; LED is that a very little wafer is encapsulated in the epoxy resin the inside basically in practical implementation; So very little of its volume, very light.

So in the advantage life that has been used in people that the LED technology is very general now just because of above-mentioned LED; When the brightness of illumination needs are very strong, need a large amount of LED be linked together to promote integral illumination intensity but its power of general led light source is all less than normal; Progressively entered into people's the visual field along with the present great power LED of development of technology; Great power LED has promoted the illumination intensity and the brightness of illumination of integral LED, so each manufacturer is all utilizing great power LED to substitute traditional LED now.

LED needs the operating current of constant pressure and flow when specifically carrying out luminous work; So in the LED light fixture, all need be equipped with relevant driving power; With regard to the type of drive of the high-power LED illumination of present appearance, all to each LED lamp join one independently the LED driving power realize, as shown in Figure 1; Configuration schematic diagram for traditional high-power LED driving power source; Be parallel with some groups of high-powered LED lamps on the external circuit A, between each group high-powered LED lamp and external circuit A, all be provided with independently driving power, its technical scheme all is to adopt constant-current driving.But this connection type of drive is in practical implementation; At first, the cost of integral product all is equipped with independently driving power than higher because in practical implementation, need organize high-powered LED lamp for each; Like this driving power account for the cost ratio of integral illumination equipment must be than higher; Secondly, all be equipped with independently driving power, so the workload of in actual installation, installing is bigger because will organize high-powered LED lamp for each; Step is all more loaded down with trivial details when safeguarding the replacing driving power in addition, is the major defect of conventional art as stated.

The utility model content

The utility model provides a kind of great power LED single drive power supply system; Single driving power only is set in its circuit just can be driven several great power LEDs simultaneously and work simultaneously and then have simple in structure; Characteristics with low cost, and this is the main purpose for the utility model.

The technical scheme that the utility model adopted is: the single driving power source system of a kind of great power LED; It comprises external circuit, driving power and some high-power LED lamps; This driving power is connected in series in this external circuit; And this external circuit is isolated into mains circuit and circuit of light sources; Wherein, this mains circuit connects outside civil power, and some these high-power LED lamps are connected in parallel in this circuit of light sources; This driving power comprises electromagnetic compatibility module, rectification module, constant voltage control module and high-frequency impulse width modulated module, and this electromagnetic compatibility module, this rectification module, this constant voltage control module and this high-frequency impulse width modulated module are connected in series successively.

Each this high-power LED lamp all comprises high-power LED light source and resistance in first kind of preferred embodiment of the utility model, and this resistance and this high-power LED light source are connected in series.

Each this high-power LED lamp all comprises high-power LED light source and converter in second kind of preferred embodiment of the utility model, and this converter and this high-power LED light source are connected in series.

The beneficial effect of the utility model is: the utility model outside civil power in this mains circuit in concrete work at first carries out Electro Magnetic Compatibility through this electromagnetic compatibility module to be handled; Then carrying out rectification through this rectification module handles; Carrying out constant voltage through this constant voltage control module afterwards handles; Carry out pulse width modulation through this high-frequency impulse width modulated module at last, transferring in this circuit of light sources after the outside civil power in this mains circuit is handled through this driving power provides work to use electric current for some these high-power LED lamps.In the technical scheme of the utility model this unique driving power is connected in this external circuit; Through this driving power the outside civil power of this external circuit is handled conversion and form the operating current that some these high-power LED lamps can directly utilize; Reduce driving power quantity from reaching, simplify the effect of integrated circuit structure.

Description of drawings

Fig. 1 is the circuit block diagram of conventional art.

Fig. 2 be the utility model circuit block diagram.

Fig. 3 is the circuit block diagram of the driving power of the utility model.

Fig. 4 is the circuit block diagram of first kind of preferred embodiment of the utility model.

Fig. 5 is the circuit block diagram of second kind of preferred embodiment of the utility model.

Embodiment

Shown in Fig. 2 to 5, the single driving power source system of a kind of great power LED, it comprises external circuit 10, driving power 20 and some high-power LED lamps 30.This driving power 20 is connected in series in this external circuit 10, carries out filtering, rectification, step-down processing by the electric current in 20 pairs of these external circuits 10 of this driving power.This driving power 20 is connected in this external circuit 10 and this external circuit 10 is isolated into mains circuit 11 and circuit of light sources 12.Wherein, this mains circuit 11 connects outside civil power, and some these high-power LED lamps 30 are connected in parallel in this circuit of light sources 12.

As shown in Figure 3, this driving power 20 comprises electromagnetic compatibility (EMC) module 21, rectification module 22, constant voltage control module 23 and high-frequency impulse width modulated (PWM) module 24.This electromagnetic compatibility (EMC) module 21, this rectification module 22, this constant voltage control module 23 and this high-frequency impulse width modulated (PWM) module 24 are connected in series successively.Outside civil power in this mains circuit 11 at first passes through this electromagnetic compatibility (EMC) module 21 and carries out the Electro Magnetic Compatibility processing; Then carrying out rectification through this rectification module 22 handles; Carry out constant voltage through this constant voltage control module 23 afterwards and handle, pass through this high-frequency impulse width modulated (PWM) module 24 at last and carry out pulse width modulation.

Transferring in this circuit of light sources 12 after outside civil power in this mains circuit 11 is handled through this driving power 20 provides work to use electric current for some these high-power LED lamps 30.

In the technical scheme of the utility model this unique driving power 20 is connected in this external circuit 10 as stated; Handle conversion through the outside civil power of 20 pairs of these external circuits 10 of this driving power and form the operating current that some these high-power LED lamps 30 can directly utilize; Reduce driving power quantity from reaching, simplify the effect of integrated circuit structure.

As shown in Figure 4, in practical implementation, in first of the utility model kind of preferred embodiment, be high-tension current or low-tension current in this mains circuit 11 of this external circuit 10.

Specifically describing to surpassing 220 volts is high-tension current, be lower than 220 volts and be low-tension current,

Electric current in this mains circuit 11 is converted into low-tension current and transfers in this circuit of light sources 12 through this driving power 20 provides work to use electric current for some these high-power LED lamps 30; This moment, the low-tension current voltage in this circuit of light sources 12 is smaller or equal to 220 volts.

The voltage of the low-tension current in practical implementation in this circuit of light sources 12 can be 12 volts or 24 volts.

Each this high-power LED lamp 30 all comprises high-power LED light source 31 and resistance 32.

This resistance 32 is connected in series with this high-power LED light source 31.

As shown in Figure 5, in practical implementation, in second of the utility model kind of preferred embodiment, be high-tension current in this mains circuit 11 of this external circuit 10.

Specifically describing to surpassing or equaling 220 volts is high-tension current, is lower than 220 volts and is low-tension current.

Transferring in this circuit of light sources 12 after electric current in this mains circuit 11 transforms through this driving power 20 provides work to use electric current for some these high-power LED lamps 30, and this moment, the electric current in this circuit of light sources 12 also is a high-tension current.

The voltage of the high-tension current in practical implementation in this circuit of light sources 12 can be 220 volts.

Each this high-power LED lamp 30 all comprises high-power LED light source 31 and converter 33.This converter 33 is connected in series with this high-power LED light source 31.This converter 33 converts the high-tension current in this circuit of light sources 12 into low-tension current and carries out rectifying and wave-filtering luminous to drive this high-power LED light source 31.

In practical implementation since this high-power LED light source 31 are low-voltage driving; This converter 33 does not promptly possess the constant voltage effect, does not possess the constant current effect yet, and the effect of this converter 33 only is to convert high-tension current into low-tension current; Rectifying and wave-filtering outputs to this high-power LED light source 31 then.

It should be noted that here great power LED alleged in the utility model can reach 1W, 2W, even tens of watts, operating current can be tens milliamperes not to be waited to the hundreds of milliampere.

Driving power output is low voltage voltage in first kind of preferred embodiment of the utility model; As 12 volts, 24 volts, only need to give the resistance of one 0.5 watt of LED lamp pearl series connection on the high-powered LED lamp, there are not other electronic devices and components again; Its overall structure is simple, low cost product.

Driving power output is high-tension electricity in second kind of preferred embodiment of the utility model; As 220 volts; The effect of the converter among the figure is exactly the high pressure of driving power to be exported change low pressure output driving high-powered LED lamp into, because high-powered LED lamp is a low pressure.Converter among the figure is promptly can not constant voltage, can not constant current, its effect becomes low pressure with high pressure exactly, and rectifying and wave-filtering outputs to high-powered LED lamp then.More than two kinds of execution modes can realize that " driving power drives the high-powered LED lamp more than.”

Above various embodiment have only expressed several kinds of concrete execution modes of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with accompanying claims.

Claims

1. single driving power source system of great power LED; It is characterized in that: it comprises external circuit, driving power and some high-power LED lamps; This driving power is connected in series in this external circuit, and this external circuit is isolated into mains circuit and circuit of light sources, wherein; This mains circuit connects outside civil power; Some these high-power LED lamps are connected in parallel in this circuit of light sources, and this driving power comprises electromagnetic compatibility module, rectification module, constant voltage control module and high-frequency impulse width modulated module, and this electromagnetic compatibility module, this rectification module, this constant voltage control module and this high-frequency impulse width modulated module are connected in series successively.

2. the single driving power source system of a kind of great power LED as claimed in claim 1 is characterized in that: each this high-power LED lamp all comprises high-power LED light source and resistance, and this resistance and this high-power LED light source are connected in series.

3. the single driving power source system of a kind of great power LED as claimed in claim 1 is characterized in that: each this high-power LED lamp all comprises high-power LED light source and converter, and this converter and this high-power LED light source are connected in series.