CN205336606U

CN205336606U - Reduce current spike 's LED light source illuminate circuit

Info

Publication number: CN205336606U
Application number: CN201520854152.8U
Authority: CN
Inventors: 胡和平; 谢城
Original assignee: Guangdong NRE Technology Co Ltd
Current assignee: Guangdong NRE Technology Co Ltd
Priority date: 2015-10-31
Filing date: 2015-10-31
Publication date: 2016-06-22
Anticipated expiration: 2025-10-31

Abstract

The utility model discloses a reduce current spike's LED light source illuminate circuit relates to LED light source illuminate circuit field, especially relate to can reduce current spike's LED light source illuminate circuit technical field. Including DC power supply, electric capacity, controller, LED light source. DC power supply: anodal, two way wires at the negative pole of output provide the electric energy for whole lighting circuit, electric capacity: connect in DC power supply's positive and negative both ends, carry out charging and discharging along with the rising and the reduction of DC power supply voltage, play the effect of the fluctuation that reduces the circuit voltage, the controller: on the one hand export on -off control signal to LED light source, control illuminating circuit's switch -on and disconnection, on the other hand out put voltage control signal to DC power supply, control voltage's height, the LED light source: the utilization comes from DC power supply's electric energy, sends when switching on the signal receiving the controller, and LED will light, and when receiving the off signal, LED will extinguish. Mainly be applied to LED light source illuminate circuit field.

Description

A kind of LED light source lighting circuit reducing current spike

Technical field

This utility model relates to LED light source illumination circuit field, especially relates to a kind of LED light source lighting circuit that can reduce current spike。

Background technology

In current generation, large-power light-emitting diodes (hereinafter referred to as " LED light source "), as novel green lighting engineering, has the advantages such as light conversion efficiency high, energy consumption low, life-span length, Maintenance free, is applied to various lighting field gradually。The long-life of LED light source is based on the working environment of its safety, for LED light source, main threat comes from over-current shock, it is exactly that the electric current applied on LED light source exceedes the rated current in this LED light source technical data handbook, the reason causing overcurrent is many-sided, such as over-voltage events such as transient state thunderbolt, the conducting moment of Switching Power Supply, power network fluctuations。These events are all transient states, and the persistent period is extremely short, and generally we are referred to as spike, this overcurrent, we term it such as " current spike "。Owing to current most LED light source lighting circuits are all that rated voltage is directly strengthened on LED light source in conducting moment, exactly because the common disadvantage of this design, causing LED light source and there is very big current spike in conducting moment, this causes huge harm to LED light source。

In order to improve this problem, a LED light source lighting circuit that can reduce current spike of my company's designed, designed, by the charging effect of electric capacity, conducting immediate current is tapped, and then reduces immediate current, reduce the current spike infringement to LED light source。

Utility model content

Problem to be solved in the utility model is to provide a kind of LED light source lighting circuit reducing current spike, reduces LED light source conducting immediate current amplitude, reduces current spike。

For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of LED light source lighting circuit reducing current spike, including DC source, electric capacity, controller, LED light source。The positive pole of DC source and negative pole are coupled with the corresponding polar end of electric capacity and LED light source, and controller sends voltage control signal and break-make control signal respectively to DC source and LED light source。DC source: output cathode, negative pole two line conductor, provides electric energy for whole lighting circuit；Electric capacity: be connected to the positive and negative two ends of DC source, rising and reduction with direct current power source voltage charge and discharge, and play the effect of the fluctuation reducing circuit voltage；Controller: output break-make control signal is to LED light source on the one hand, controls switching on and off of lighting circuit, output voltage control signal is to DC source on the other hand, controls the height of voltage, makes DC source send low-voltage and rated voltage；LED light source: utilizing the electric energy from DC source, when receiving controller and sending Continuity signal, LED will light, and when receiving cut-off signal, LED will extinguish。

Further, controller produces the technology of voltage control signal and break-make control signal is pulse width modulating technology (hereinafter referred to as " PWM ")。

Further, capacitor is electrochemical capacitor。

Further, DC source sends low-voltage is rated voltage 0.8 times。

The beneficial effects of the utility model are: can reduce LED light source conducting immediate current amplitude, decrease current spike, reduce the current spike infringement to LED light source。Avoiding LED light source to turn on the impact to LED light source of the immediate current spike at lighting circuit, the service life for extending LED light source plays remarkable result。

Accompanying drawing explanation

Fig. 1 is the overall structure figure of a kind of LED light source lighting circuit reducing current spike of this utility model。

Detailed description of the invention

As it is shown in figure 1, this utility model provides a kind of LED light source lighting circuit reducing current spike, including DC source, electric capacity, controller, LED light source。The positive pole of DC source and negative pole are coupled with the corresponding polar end of electric capacity and LED light source, and controller sends voltage control signal and break-make control signal respectively to DC source and LED light source。DC source: output cathode, negative pole two line conductor, provides electric energy for whole lighting circuit；Electric capacity: be connected to the positive and negative two ends of DC source, rising and reduction with direct current power source voltage charge and discharge, and play the effect of the fluctuation reducing circuit voltage；Controller: output break-make control signal is to LED light source on the one hand, controls switching on and off of lighting circuit, output voltage control signal is to DC source on the other hand, controls the height of voltage；LED light source: utilizing the electric energy from DC source, when receiving controller and sending Continuity signal, LED will light, and when receiving cut-off signal, LED will extinguish。

Real-time process of the present utility model: when not needing LED light source and lighting, controller sends out cut-off signal to LED light source on the one hand, sending out low voltage signal to DC source on the other hand, now electric capacity both end voltage keeps consistent with DC source both end voltage, is in low-voltage；When needs LED light source is lighted, controller LED light source on the one hand sends out Continuity signal, nominal voltage signal is sent out on the other hand to DC source, now electric capacity both end voltage is lower than DC source both end voltage, the spontaneous charging of electric capacity, the electric current of DC source output is tapped, make to be reduced by LED light source immediate current, reduce the infringement that LED light source is caused by current spike, charging gradually along with electric capacity, shunting action is gradually lowered, it is gradually restored to rated current by the electric current of LED light source, , after electric capacity charging complete, LED light source will in stable operation under rated current。

Above an embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model。All equalizations made according to this utility model application range change and improvement etc., all should still belong within patent covering scope of the present utility model。

Claims

1. the LED light source lighting circuit reducing current spike, it is characterized in that: the positive pole of DC source and negative pole are coupled with the corresponding polar end of electric capacity and LED light source, controller sends voltage control signal and break-make control signal respectively to DC source and LED light source；When LED light source is lighted, controller LED light source on the one hand sends out Continuity signal, nominal voltage signal is sent out on the other hand to DC source, now electric capacity both end voltage is lower than DC source both end voltage, the spontaneous charging of electric capacity, the electric current of DC source output is tapped, makes to be reduced by LED light source immediate current。

2. a kind of LED light source lighting circuit reducing current spike as claimed in claim 1, it is characterised in that: it is pulse width modulating technology that described controller produces the technology of voltage control signal and break-make control signal。

3. a kind of LED light source lighting circuit reducing current spike as claimed in claim 1, it is characterised in that: described capacitor is electrochemical capacitor。

4. a kind of LED light source lighting circuit reducing current spike as claimed in claim 1, it is characterised in that: the low-voltage that described DC source sends is 0.8 times of rated voltage。