CN202190435U

CN202190435U - Novel LED street lamp driving power supply

Info

Publication number: CN202190435U
Application number: CN 201120144506
Authority: CN
Inventors: 毛振刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-10
Filing date: 2011-05-10
Publication date: 2012-04-11
Anticipated expiration: 2021-05-10

Abstract

The novel LED street lamp driving power supply provided in the utility model comprises a commercial power input terminal, an anti-surge module, an active EMI filtering module, an AC/DC module, a DC/DC module, a rectification EMI filtering module, a PFC factor setting die block, a PWM pulse width modulation module, a feedback network module and a photoelectric coupling circuit module. In the utility model, the design is reasonable, the problems of a low efficiency and unstable performance are solved, the LED street lamp driving power supply can play a normal effect, and the novel LED street lamp driving power supply is characterized by possessing high reliability, high efficiency, a high power factor, a surge protection function, a long service life, etc.

Description

The Novel LED street lamp driving power

Technical field

The utility model relates to a kind of driving power art, especially a kind of Novel LED street lamp driving power of constant pressure and flow.

Background technology

At present, under the background that global energy shortage, environmental requirement improve constantly, the green energy conservation illumination is all greatly developed in countries in the world.The LED illumination is as a kind of revolutionary energy-saving illumination technology, just in develop rapidly.Yet the requirement of LED driving power is also improving constantly.For example, imitate for the whole light of street lamp and to require to reach more than the 681m/W, with the direct correlation of light fixture light efficiency be the efficient of power supply, power-efficient is high more, whole light is imitated and is required just might reach more.High-power LED illuminations such as LED street lamp, Tunnel Lamp are promoted the initial stage, and there are problems in the LED driving power, mainly are not design according to LED street lamp, the residing adverse circumstances of Tunnel Lamp, and operating temperature range is narrow, has only-40 ℃---and 70 ℃; Classification of waterproof is low; The lightning protection grade is low; Efficient is low, and the life-span falls short of or the like.

Summary of the invention

The purpose of the utility model is to overcome the deficiency of prior art, provides that a kind of stable performance, efficient are high, easy to use, long service life, cost performance is high and safe and reliable Novel LED street lamp driving power.

The utility model solves its technical problem and takes following technical scheme to realize:

The Novel LED street lamp driving power is made up of mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module, PFC factor correcting module, PWM pulse width modulation module, feedback network module and photoelectricity coupling circuit module.Mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module are linked in sequence successively.Wherein AC/DC module, PFC power factor correction module, PWM pulse-width modulation, DC/DC sequence of modules connect, and PFC factor correcting module is connected with the optocoupler module with the AC/DC module respectively.At voltage, the electric current through the output of over commutation EMI filtration module, through the feedback network module, the electric current and voltage that makes its feedback is delivered to the PFC power factor correction module through photoelectricity coupling circuit module.Then obtain stable constant voltage/current isolator.

And described anti-surge module is made up of electric capacity, inductance and triode.When circuit just powered on, electric current charged to electric capacity through resistance, and electric capacity is equivalent to short circuit, and triode is in cut-off state, and circuit is not exported; As time goes on, the voltage at electric capacity two ends slowly becomes greatly, and to the triode conducting, this moment, circuit had output, but because the two ends electric current of inductance can not suddenly change, its electric current increases gradually, thereby has played the effect that prevents surge; When electric capacity was full of, electric capacity just was in cut-off state, and this moment, triode was in conducting state all the time.

And described active EMI filtration module has adopted semiconductor device and electronics.Make it aspect volume, weight and loss, all remarkable advantages is arranged than Traditional passive filter

And, adopt in the described rectification EMI filtration module to have diode soft recovery characteristics, that reverse recovery current is little and that the time is short.Because the quantity that reduces rectifier diode promptly reduces the energy of EMI.

And described AC/DC module and DC/DC are module-integrated, help like this guaranteeing that stablizing of output voltage is constant, raise the efficiency.

And that described PFC power factor correction module adopts is APFC controller L6561.

And described PWM pulse width modulation module is to adopt the control of electric current and voltage dicyclo, to realize the adjustment of output voltage and the restriction of output current.

And described feedback network module is made up of constant voltage module, constant flow module and overheat protector led module.The feedback network module is given PFC device L6561 through optocoupler, makes the power factor of module reach 0.95.

The advantage and the good effect of the utility model are:

1, this LED streetlamp driving power supply has increased anti-surge module in the mains electricity input end, the not impaired ability of protection LED.

2, the active EMI filtration module has adopted semiconductor device and electronic circuit in this LED streetlamp driving power supply, makes it aspect volume, weight and loss, all than Traditional passive filter remarkable advantages is arranged; Rectification EMI filtration module has adopted to have diode soft recovery characteristics, that reverse recovery current is little and that the time is short, has reduced the consume of energy.

3, adopted AC/DC module and DC/DC module-integrated in this LED streetlamp driving power supply, helped like this guaranteeing that stablizing of output voltage is constant, raised the efficiency.

4, the output of this LED streetlamp driving power supply is the power supply of constant pressure and flow.Avoided the change of LED forward voltage and caused the electric current change, constant electric current makes the brightness stability of LED simultaneously.This design is better than existing those two kinds of driving powers at cost and aspect of performance.

5, this LED streetlamp driving power supply does not add accessory power supply, and the complete machine element is less, and circuit is simple.Power is 100W, and power factor reaches 0.95.In constant current output, increase the overheat protector led module, prevent that the LED temperature is too high and damage.

6, this LED streetlamp driving power supply has smaller volume, can work long hours, and is prone to heat radiation, low cost, anti-electromagnetic interference.The life-span of its driving power and the life-span of LED are complementary, and meet safety and electromagnetic compatibility requirements.

7, the utility model is reasonable in design; Problems such as efficient is low, unstable properties have been solved; Make the effect that the LED streetlamp driving power supply can be brought into normal play to have characteristics such as high reliability, high efficiency, High Power Factor, surge protection, long service life, guarantee to export the power supply of constant pressure and flow.

Description of drawings

Figure one is that the control circuit of the utility model connects block diagram.

Embodiment

Below in conjunction with accompanying drawing the utility model embodiment is done further detailed description:

A kind of Novel LED street lamp driving power; Shown in figure one, mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module, PFC factor correcting module, PWM pulse width modulation module, feedback network module and photoelectricity coupling circuit module constitute.Mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module are linked in sequence successively.Wherein AC/DC module, PFC power factor correction module, PWM pulse-width modulation, DC/DC sequence of modules connect, and PFC factor correcting module is connected with the optocoupler module with the AC/DC module respectively.At voltage, the electric current through the output of over commutation EMI filtration module, through the feedback network module, the electric current and voltage that makes its feedback is delivered to the PFC power factor correction module through photoelectricity coupling circuit module.Adopt described mains electricity input end is one and is the alternating voltage of 220V; Described anti-surge module is made up of electric capacity, inductance and triode.When circuit just powered on, electric current charged to electric capacity through resistance, and electric capacity is equivalent to short circuit, and triode is in cut-off state, and circuit is not exported; As time goes on, the voltage at electric capacity two ends slowly becomes greatly, and to the triode conducting, this moment, circuit had output, but because the two ends electric current of inductance can not suddenly change, its electric current increases gradually, thereby has played the effect that prevents surge; When electric capacity was full of, electric capacity just was in cut-off state, and this moment, triode was in conducting state all the time.Described active EMI filtration module has adopted semiconductor device and electronics.Make it aspect volume, weight and loss, all remarkable advantages is arranged than Traditional passive filter; Adopt in the described rectification EMI filtration module and have diode soft recovery characteristics, that reverse recovery current is little and that the time is short.Because the quantity that reduces rectifier diode promptly reduces the energy of EMI; AC/DC module and DC/DC are module-integrated, help like this guaranteeing that stablizing of output voltage is constant, raise the efficiency; That described PFC power factor correction module adopts is APFC controller L6561; Described feedback network module is made up of constant voltage module, constant flow module and overheat protector led module.The feedback network module is given PFC device L6561 through optocoupler, makes the power factor of module reach 0.95; Described PWM pulse width modulation module is to adopt the control of electric current and voltage dicyclo, to realize the adjustment of output voltage and the restriction of output current;

It is emphasized that; The described embodiment of the utility model is illustrative; Rather than it is determinate; Therefore the utility model is not limited to the embodiment described in the embodiment, every by those skilled in the art according to other execution modes that the technical scheme of the utility model draws, belong to the scope of the utility model protection equally.

Claims

1. a Novel LED street lamp driving power is characterized in that: be made up of mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module, PFC factor correcting module, PWM pulse width modulation module, feedback network module and photoelectricity coupling circuit module; Mains electricity input end, anti-surge module, active EMI filtration module, AC/DC module, DC/DC module, rectification EMI filtration module are linked in sequence successively; Wherein AC/DC module, PFC power factor correction module, PWM pulse-width modulation, DC/DC sequence of modules connect, and PFC factor correcting module is connected with the optocoupler module with the AC/DC module respectively; At voltage, the electric current through the output of over commutation EMI filtration module, through the feedback network module, the electric current and voltage that makes its feedback is delivered to the PFC power factor correction module through photoelectricity coupling circuit module; Then obtain stable constant voltage/current isolator.

2. Novel LED street lamp driving power according to claim 1 is characterized in that: protection module will have the surge of inhibition to invade to the LED driving power, the not impaired ability of protection LED; What input active EMI filtration module adopted is that active EMI filter has adopted semiconductor device and electronic circuit.

3. Novel LED street lamp driving power according to claim 1 is characterized in that: the photoelectricity coupling module is made up of the photoelectrical coupler of a linearity, and the feedback signal that the feedback network module is provided passes to the PFC power factor correction module.

4. Novel LED street lamp driving power according to claim 1 is characterized in that: will adopt in the rectification EMI filtration module to have diode soft recovery characteristics, that reverse recovery current is little and that the time is short; Because the quantity that reduces rectifier diode promptly reduces the energy of EMI.

5. Novel LED street lamp driving power according to claim 1 is characterized in that: AC/DC module and DC/DC are module-integrated, help like this guaranteeing that stablizing of output voltage is constant, raise the efficiency.

6. Novel LED street lamp driving power according to claim 1 is characterized in that: pwm control circuit adopts the control of electric current and voltage dicyclo, to realize the adjustment of output voltage and the restriction of output current.

7. Novel LED street lamp driving power according to claim 1 is characterized in that: the feedback network module is made up of constant voltage module, constant flow module and overheat protector led module; The feedback network module is given PFC device L6561 through optocoupler, makes the power factor of module reach 0.95.