WO2017107146A1 - Circuit d'excitation de del - Google Patents

Circuit d'excitation de del Download PDF

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Publication number
WO2017107146A1
WO2017107146A1 PCT/CN2015/098754 CN2015098754W WO2017107146A1 WO 2017107146 A1 WO2017107146 A1 WO 2017107146A1 CN 2015098754 W CN2015098754 W CN 2015098754W WO 2017107146 A1 WO2017107146 A1 WO 2017107146A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
resistor
power
output
led
Prior art date
Application number
PCT/CN2015/098754
Other languages
English (en)
Chinese (zh)
Inventor
黄鹤鸣
许国伟
Original Assignee
深圳市聚作照明股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市聚作照明股份有限公司 filed Critical 深圳市聚作照明股份有限公司
Priority to PCT/CN2015/098754 priority Critical patent/WO2017107146A1/fr
Priority to CN201590000102.1U priority patent/CN206212329U/zh
Publication of WO2017107146A1 publication Critical patent/WO2017107146A1/fr

Links

Classifications

    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

Definitions

  • the present application relates to LED driving technology, and more particularly to an LED driving circuit.
  • LED fluorescent lamp holders are usually equipped with at least one LED lamp.
  • the traditional driving method is to drive one lamp per lamp. When one lamp is not lit, other lamps work as usual, and this driving method is costly.
  • the purpose of the present application is to provide an LED driving circuit, which is intended to have a large number of lamps and a high cost.
  • An LED driving circuit capable of driving a plurality of LED lamps, including a power conversion loop for connecting an alternating current and for adjusting an alternating current current, and an AC-DC module for alternating current to direct current, and including for converting the power to the power a loop providing a power supply IC module with an adjustable control signal and a plurality of detection control modules for detecting whether the LED light is connected;
  • an AC input terminal of the AC-DC module is connected to an output end of the power conversion loop, and a DC output end of the AC-DC module is connected to a positive pole of each of the LED lamps; each of the detecting The input end of the control module is connected to the corresponding negative pole of the LED lamp, and the output end is connected to the feedback end of the power IC module; the output end of the power IC module is connected to the controlled end of the power conversion loop;
  • the module 13 adjusts the size of the control signal outputted to the power conversion loop according to the detection control module detecting the access state of the LED lamp, so that the power conversion loop adjusts the input of the AC input end of the AC-DC module. Current size.
  • the detection control module includes a first bypass transistor, a second bypass transistor, a photocoupler, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth a resistor and a seventh resistor, wherein:
  • control end of the first bypass tube is connected to the negative pole of the LED lamp through the first resistor, the first The output end of the switch is grounded, and passes through the second resistor to the negative pole of the LED lamp, and the input end of the first switch transistor is connected to the output end of the light source of the photocoupler, the optocoupler The input end of the light source is connected to the DC output end of the AC-DC module through the third resistor;
  • the output end of the photocoupler of the photocoupler is grounded, the input end of the photocoupler of the photocoupler is connected to the control end of the second bypass tube, and the working power supply is connected through the fourth resistor.
  • the output end of the second bypass tube is grounded, the input end of the second bypass tube is connected to one end of the fifth resistor, and the second end of the fifth resistor is used as an output end of the detection control module.
  • the first bypass pipe and the second bypass pipe are NPN type transistors, and the input end, the output end, and the control end of the first bypass pipe and the second bypass pipe are respectively NPN type The collector, emitter, and base of the transistor.
  • the power IC module includes a driving power chip, a sixth resistor, and a seventh resistor, wherein the power source of the driving power chip is connected to the working power source, and the feedback power of the driving power chip is used as a Power supply I
  • the feedback terminal of the C module is connected to the output end of the detection control module, and the output pin of the driving power chip is connected to the output end of the power conversion circuit as the controlled end of the power conversion circuit; One end is connected to the working power supply, and the other end is connected to the output end of the detection control module, and grounded through the seventh resistor.
  • the AC-DC module includes a transformer, a rectifier and a filter capacitor, a primary coil of the transformer is connected to an output end of the power conversion loop, and one end of the rectifier is connected to a secondary coil of the transformer. One end is connected, the other end of the secondary coil of the transformer is grounded, and the other end of the rectifier is grounded through the filter capacitor and serves as a DC output end of the AC-DC module.
  • the rectifier is a rectifier diode
  • an anode of the rectifier diode is connected to one end of the secondary coil of the transformer
  • a cathode is connected to the filter capacitor
  • the LED driving circuit detects whether there is an LED lamp access by using the detection control module, and inputs the detection signal to the power IC module, and the power IC module adjusts the duty ratio of the control signal according to the detection signal so that the power conversion circuit adjusts the AC.
  • the input current of the AC input terminal of the DC module that is, the power supply adjustment of the LED lamp is realized, and one driving power source with multiple LED lights is realized, which realizes power adaptation and saves cost.
  • FIG. 1 is a circuit schematic diagram of an LED driving circuit in a preferred embodiment of the present application.
  • an LED driving circuit in a preferred embodiment of the present application can drive a plurality of LED lamps 10 , including a power conversion loop 11 , an AC-DC module 12 , a power IC module 13 , and a plurality of detection control modules 14 . .
  • the power conversion circuit 11 is connected to an alternating current power source (not shown) and used to adjust the magnitude of the alternating current; the AC-DC module 12 is configured to convert the alternating current power into direct current to power the LED lamp 10; the detection control module 14 is configured to detect Whether the LED lamp 10 is connected, and the detection result is fed back to the power IC module 13; the power IC module 13 is configured to provide an adjustable control signal to the power conversion circuit 11 according to the detection result.
  • the AC input terminal of the AC-DC module 12 is connected to the output end of the power conversion circuit 11, and the DC output terminal LED+ of the AC-DC module 12 is connected to the positive pole of each LED lamp 10; the input terminal of each detection control module 14 is connected.
  • the output terminal of each detection control module 14 is connected to the feedback end of the power supply IC module 13; the output end of the power supply IC module 13 is connected to the control end of the power conversion circuit 11; the power supply IC module 13 is controlled according to the detection.
  • the module 14 detects the access state of the LED lamp 10 to adjust the magnitude of the control signal output to the power conversion loop 11 to cause the power conversion loop 11 to adjust the magnitude of the input current of the AC input terminal of the AC-DC module 12.
  • the power IC module 13 adjusts the size of the control signal according to the detection result of the detection control module 14, and the power conversion circuit 11 adjusts the input current of the AC input terminal of the AC-DC module 12 under the control of the control signal to adjust the DC output LED+. Voltage and current.
  • the power conversion loop 11 can be implemented by the prior art, which regulates the input AC power supply circuit by the access control signal and outputs it to the AC-DC module 12.
  • the AC-DC module 12 includes a transformer T1, a rectifier D1, and a filter capacitor C1.
  • the primary coil of the transformer T1 is connected to the output end of the power conversion circuit 11, and the end of the rectifier D1 terminal and the secondary coil of the transformer T1. Connected, the other end of the secondary winding of the transformer T1 is grounded, and the other end of the rectifier D1 is grounded through the filter capacitor C1 and serves as the DC output terminal LED+ of the AC-DC module 12.
  • the rectifier D1 is a rectifier diode, and the anode of the rectifier diode is connected to one end of the secondary coil of the transformer T1, and the cathode is connected to the filter capacitor Cl.
  • the detection control module 14 includes a first bypass transistor Q1, a second bypass transistor Q2, a photocoupler ⁇ 1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor. R5.
  • the control end of the first switch Q1 is connected to the negative pole of the LED lamp 10 through the first resistor R1, the output end of the first switch Q1 is grounded, and passes through the second resistor R2, the negative pole of the LED lamp 10, first
  • the input end of the switch Q1 is connected to the output end of the light source of the optocoupler OP1, and the input end of the light source of the optocoupler OP1 is connected to the DC output terminal LED+ of the AC-DC module 12 through the third resistor R3.
  • the output end of the photocoupler of the optocoupler OP 1 is grounded, the input end of the photoreceiver OP1 is connected to the control end of the second switch Q2, and the fourth resistor R4 is connected to the working power supply VCC, second The output end of the switch Q2 is grounded, the input end of the second switch Q2 is connected to one end of the fifth resistor R5, and the second end of the fifth resistor R5 is used as the output end of the detection control module 14.
  • the first bypass tube Q1 and the second bypass tube Q2 are NPN type transistors, and the input end, the output end and the control end of the first bypass tube Q1 and the second bypass tube Q2 are respectively NPN type The collector, emitter, and base of the transistor.
  • the power IC module 13 includes a driving power chip U1, a sixth resistor R6, and a seventh resistor R7.
  • the power supply pin I6 of the driving power chip U1 is connected to the working power source VCC, and the feedback pin I of the driving power chip U1 is used as a power source.
  • the feedback terminal of the IC module 13 is connected to the output end of the detection control module 14.
  • the output pin 8 of the driving power chip U1 is used as the output end of the power IC module 13 to be connected to the control end of the power conversion circuit 11; one end of the sixth resistor R6 is connected to the working power supply. VCC, the other end is connected to the output of the detection control module 14, and is grounded through the seventh resistor R7.
  • the driving power supply chip U1 is an ordinary driving power supply chip, and an existing chip having the above functions can be employed.
  • the driving power chip U1 is a PWM control chip, and the control signal outputted from the output pin 8 is a PWM signal with adjustable duty ratio, or a current signal of adjustable magnitude.
  • the driving power chip U1 is energized, and the current passes through the rectifier D1, the positive pole of the LED lamp 10, the negative pole of the LED lamp 10, and the second resistor R2 to the ground.
  • the current generates a voltage of 0.7V on the second resistor R2, and the voltage of 0.7V is
  • the first resistor R1 is applied between the bases of the first bypass tube Q1, the collector and the emitter of the first bypass transistor Q1 are turned on, the light source of the photocoupler OP1 is powered to emit light, and the photocoupler of the photocoupler OP1 When turned on, the base voltage of the second bypass transistor Q2 disappears.
  • the second switch Q2 is turned off, and the fifth resistor R5 is turned off.
  • the driving power chip U1 is a power IC with an analog dimming function, and the voltage of the feedback pin I pin 7 determines the duty ratio or current of the PWM signal output from the output pin 8.
  • the voltage at the feedback pin 7 of the driving power chip U1 (R7/R5) I (R6+R7/R5).
  • the first switch Q1 is turned off, the photocoupler OP1 has no operating current, and the second switch Q2 is turned on.
  • the fifth resistor R5 is connected in parallel with the seventh resistor R7 through the emitter ground of the second bypass transistor Q2.
  • the feedback pin 7 of the driving power chip U1 becomes lower, the output pin 8 output control signal becomes lower, and the AC current regulated by the power conversion circuit 11 becomes smaller, and the DC output LED+ output current decreases.
  • Other LED lights 10 work the same way.
  • the LED driving circuit detects whether or not the LED lamp 10 is connected by using the detection control module 14, and inputs the detection signal to the power supply IC module 13, and the power supply IC module 13 adjusts the duty ratio of the control signal according to the detection signal to make the power
  • the conversion circuit 11 adjusts the input current of the AC input terminal of the AC-DC module 12, that is, realizes the power supply adjustment of the LED lamp 10, realizes one driving power source with multiple LED lamps 10, realizes power adaptation, and saves cost.
  • the cost is reduced by about 30%.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Abstract

L'invention porte sur un circuit d'excitation de diodes électroluminescentes (DEL) qui peut exciter une pluralité de lampes à DEL (10), le circuit comprenant une boucle de retour de conversion de puissance (11), un module C.A. - C.C. (12), un module de circuit intégré (CI) d'alimentation électrique (13) et une pluralité de modules de commande de détection (14). La boucle de retour de conversion de puissance (11) accède à l'alimentation électrique en courant alternatif pour ajuster l'amplitude du courant alternatif ; le module C.A. - C.C. (12) est utilisé pour convertir le courant alternatif en un courant continu ; les modules de commande de détection (14) sont utilisés pour détecter si les lampes à DEL (10) font l'objet d'un accès, et pour renvoyer les résultats de détection au module CI d'alimentation électrique (13) ; le module CI d'alimentation électrique (13) est utilisé pour fournir un signal de commande réglable à la boucle de retour de conversion de puissance (11) sur la base des résultats de détection, de manière que la boucle de retour de conversion de puissance (11) régule l'amplitude du courant d'entrée de la borne d'entrée de courant alternatif du module C.A.- C.C. (12). Une seule alimentation d'excitation peut ainsi exciter une pluralité de lampes à DEL, mettant en œuvre une auto-adaptation de puissance et réduisant les coûts.
PCT/CN2015/098754 2015-12-24 2015-12-24 Circuit d'excitation de del WO2017107146A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/098754 WO2017107146A1 (fr) 2015-12-24 2015-12-24 Circuit d'excitation de del
CN201590000102.1U CN206212329U (zh) 2015-12-24 2015-12-24 一种led驱动电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/098754 WO2017107146A1 (fr) 2015-12-24 2015-12-24 Circuit d'excitation de del

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107734778A (zh) * 2017-11-13 2018-02-23 江西美的贵雅照明有限公司 Led驱动电源电路和发光设备
CN107896403A (zh) * 2017-12-20 2018-04-10 广东恒润光电有限公司 一种led电源
CN107917770A (zh) * 2017-12-07 2018-04-17 太原理工大学 具备长距离传输和抗干扰功能的道路路基压力检测装置
CN110139445A (zh) * 2019-05-31 2019-08-16 深圳市奋勇光电有限公司 一种电量和调光控制二合一电路
CN111835326A (zh) * 2020-07-29 2020-10-27 成都通用整流电器研究所 一种基于igbt驱动的模块安全控制保护及指示电路
CN113645738A (zh) * 2021-07-22 2021-11-12 西安中科微星光电科技有限公司 一种光源控制电路
CN114080078A (zh) * 2020-08-10 2022-02-22 苏州斯特雷电子有限公司 Led灯带智能驱动器及驱动方法
CN116247796A (zh) * 2023-03-02 2023-06-09 深圳市景欣泰家居用品有限公司 双模式吹风机的电路***及其控制方法

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CN108667274B (zh) * 2018-05-22 2020-08-11 青岛海尔智能技术研发有限公司 驱动板电源输出的控制电路
CN113194574A (zh) * 2021-03-11 2021-07-30 达理光线智能科技股份有限公司 一种延时关灯装置
CN114364095A (zh) * 2022-02-21 2022-04-15 深圳市金永信科技有限公司 中功率组合调光led驱动电源

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101631410A (zh) * 2009-08-24 2010-01-20 英飞特电子（杭州）有限公司 一种高功率因数的ac-dc led驱动电路
CN101730332A (zh) * 2008-10-14 2010-06-09 聚积科技股份有限公司 发光二极管的驱动电路
CN102724793A (zh) * 2012-05-21 2012-10-10 四川新力光源有限公司 手势控制的led照明装置
CN102821509A (zh) * 2011-06-08 2012-12-12 聚积科技股份有限公司 交直流两用发光二极管驱动电路
CN103582242A (zh) * 2012-07-30 2014-02-12 朗捷科技股份有限公司 高效率交流led驱动电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101730332A (zh) * 2008-10-14 2010-06-09 聚积科技股份有限公司 发光二极管的驱动电路
CN101631410A (zh) * 2009-08-24 2010-01-20 英飞特电子（杭州）有限公司 一种高功率因数的ac-dc led驱动电路
CN102821509A (zh) * 2011-06-08 2012-12-12 聚积科技股份有限公司 交直流两用发光二极管驱动电路
CN102724793A (zh) * 2012-05-21 2012-10-10 四川新力光源有限公司 手势控制的led照明装置
CN103582242A (zh) * 2012-07-30 2014-02-12 朗捷科技股份有限公司 高效率交流led驱动电路

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107734778B (zh) * 2017-11-13 2024-02-09 美智光电科技股份有限公司 Led驱动电源电路和发光设备
CN107734778A (zh) * 2017-11-13 2018-02-23 江西美的贵雅照明有限公司 Led驱动电源电路和发光设备
CN107917770B (zh) * 2017-12-07 2023-06-16 太原理工大学 具备长距离传输和抗干扰功能的道路路基压力检测装置
CN107917770A (zh) * 2017-12-07 2018-04-17 太原理工大学 具备长距离传输和抗干扰功能的道路路基压力检测装置
CN107896403A (zh) * 2017-12-20 2018-04-10 广东恒润光电有限公司 一种led电源
CN107896403B (zh) * 2017-12-20 2024-03-12 广东恒润光电有限公司 一种led电源
CN110139445A (zh) * 2019-05-31 2019-08-16 深圳市奋勇光电有限公司 一种电量和调光控制二合一电路
CN111835326B (zh) * 2020-07-29 2023-08-18 成都通用整流电器研究所 一种基于igbt驱动的模块安全控制保护及指示电路
CN111835326A (zh) * 2020-07-29 2020-10-27 成都通用整流电器研究所 一种基于igbt驱动的模块安全控制保护及指示电路
CN114080078A (zh) * 2020-08-10 2022-02-22 苏州斯特雷电子有限公司 Led灯带智能驱动器及驱动方法
CN114080078B (zh) * 2020-08-10 2024-02-20 苏州斯特雷电子有限公司 Led灯带智能驱动器及驱动方法
CN113645738A (zh) * 2021-07-22 2021-11-12 西安中科微星光电科技有限公司 一种光源控制电路
CN116247796A (zh) * 2023-03-02 2023-06-09 深圳市景欣泰家居用品有限公司 双模式吹风机的电路***及其控制方法

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