WO2016078253A1 - 低成本全方位全兼容驱动装置 - Google Patents

低成本全方位全兼容驱动装置 Download PDF

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WO2016078253A1
WO2016078253A1 PCT/CN2015/073771 CN2015073771W WO2016078253A1 WO 2016078253 A1 WO2016078253 A1 WO 2016078253A1 CN 2015073771 W CN2015073771 W CN 2015073771W WO 2016078253 A1 WO2016078253 A1 WO 2016078253A1
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diode
electrically connected
switch
current
constant current
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PCT/CN2015/073771
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English (en)
French (fr)
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陈敦军
雷建明
张�荣
郑有炓
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南京大学
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Priority to JP2016559492A priority Critical patent/JP6114890B2/ja
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • the invention relates to an LED driving device in the field of LED fluorescent lamps, in particular to a low-cost all-round compatible driving device.
  • the technical problem to be solved by the present invention is to address the above-mentioned deficiencies of the prior art, and to provide an inductive, coupled electronic, common electronic, preheating compatibility without damaging the lamp tube or damaging the ballast.
  • Four types of compatibility such as electronic, and fully compatible drives for direct input to utility power.
  • the technical solution adopted by the present invention is: a low-cost all-round fully compatible driving device, including an intelligent control unit, a current limiting constant current unit, a high frequency constant current control IC, a voltage monitoring unit, an LED string, a resistor R, Diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode D8, diode D9, inductor L, capacitor C, switch K101, switch K102, switch K103, first input contact A, Two input contacts B, a third input contact C and a fourth input contact D; the switch K101, the LED string, the inductor L, the switch K103 and the resistor R are connected in series; the anode of the diode D1 is electrically connected to the first input point A, The cathode is electrically connected to the switch K101; the anode of the diode D2 is electrically connected to the second input point B, the cath
  • the cathode is electrically connected to the switch K101; the cathode of the diode D7 is electrically connected to the third input point C, the anode is electrically connected to the resistor R; the cathode of the diode D8 is electrically connected to the fourth input point D, and the anode is electrically connected to the resistor R; the capacitor C and The LED lights are connected in parallel, the switch K102 is connected in parallel with the inductor L, the diode D9 is connected in parallel between the switch K101, the LED string and the inductor L.
  • the voltage monitoring unit is used for detecting the voltage of the upper end of the switch K103 and transmitting the detected voltage value to the high frequency constant current.
  • high-frequency constant current control IC judge whether to make K103 enter high-frequency BUCK PWM or enter current-limit operation mode according to the voltage value output by the voltage monitoring unit and the detected current value of switch K103; current limiting constant current unit: for passing Monitor the peak current of the resistor R and enter the current-limiting constant current mode through the switch K103 to prevent the current from being too large; the intelligent control unit: through the voltage monitoring unit, the current and current limiting resistor R, the signal provided by the constant current unit passes the delta delay The method implements timing control of the K101.
  • the LED light string comprises at least two LED devices, which are single LED lamp beads or LED light strings or LED strings and combined.
  • K101 is turned on, K102 is turned off, K103 is turned on, and the current limiting mode is turned on, by monitoring whether the voltage of the upper end of K103 is the mains mode; if it is the mains mode, maintaining the state of K101 and K102, and starting the high frequency control to enable K103 Enter the BUCK PWM operation mode; if it is not the mains mode, keep the state of K101 and K103, turn on K102, that is, short-circuit the inductor, monitor the startup state by detecting the main line current; if it does not start, turn off K101, then delay for a while K101 is turned on again to implement delayed triggering.
  • the present invention can realize two kinds of judgments: firstly, it is judged whether it is a commercial power, and then it is judged whether it is an electronic ballast or an electromagnetic ballast, and the basis for the judgment is:
  • the judgment of the mains is to detect and judge the voltage at the upper end of K103 through the voltage monitoring unit.
  • the voltage monitoring unit considers that the mains power is coming in, thereby transmitting the judgment signal to High-frequency constant current control IC, the IC quickly enters the high-frequency control K103, thus entering the high-frequency step-down control; in addition, in the initial judgment of whether it is the mains, in order to prevent the influx of the mains to destroy the components, K103 first passes the current
  • the constant current unit is restricted from entering a current limiting constant current mode to prevent excessive current.
  • the second is whether it is an electronic ballast or an inductive ballast. It is intelligently controlled by the detection of the current at the lowermost resistance and the voltage of the voltage monitoring unit. Because K101 is initially turned on, if at this time, the following resistor There is still no current, and the voltage value on K103 is not high, indicating that it is not the mains. Then, the intelligent control unit will turn off K101, delay KIO again after a short period of time, if it still can't work normally, it will be delayed gradually. The time is lengthened until the system is working properly. This method can be called the delta delay method.
  • the input points A, B, C and D in the present invention are four input terminals which can be arbitrarily accessed, the current limiting constant current unit is a unit for monitoring and controlling the peak current; the high frequency constant current control IC is a high frequency step-down constant The flow control chip; the voltage monitoring unit detects the voltage at the upper end of the K103; the intelligent control unit is an intelligent control unit that implements timing and mode through signal monitoring.
  • the invention adopts intelligent judgment and compensation to realize full compatibility between the commercial power and the magnetic ballast/electronic ballast; in the electronic and magnetic ballast mode, the constant current is automatically realized by using an external inductor, and the current limiting control is adopted; The constant current is realized by the high-frequency PWM mode; and the LED is directly used as the load, and no capacitive isolation is used; the need for different ET/IT is controlled by the delay link; and the input state is intelligently judged according to the monitored voltage and current signals.
  • the invention can realize plugging in any direction, compatible with any electronic ballast, compatible with any magnetic ballast, compatible with mains, optional pluggable (including hot plugging), and UL leakage test.
  • the present invention is compatible with four types of compatibility, such as inductive, coupled electronic, common electronic, and preheated electronic, and direct input to the commercial power, without damaging the lamp tube or damaging the ballast. Fully compatible.
  • Figure 1 is a schematic diagram of the circuit principle of the present invention.
  • the low-cost all-round compatible driving device includes an intelligent control unit, a current limiting constant current unit, a high frequency constant current control IC, a voltage monitoring unit, an LED string, a resistor R, a diode D1, a diode D2, and a diode D3.
  • the LED light string includes at least two LED devices, which are single LED light beads or LED light strings or LED strings and combined.

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

Abstract

一种低成本全方位全兼容驱动装置，电压监测单元用于检测开关K103上端电压并输送给高频恒流控制IC；高频恒流控制IC根据电压监测单元输出的电压值和检测到的开关K103的电流值判断是否使K103进入高频BUCK PWM或者进入限流运行模式；电流限制恒流单元用于通过监测电阻R的峰值电流并且通过开关K103进入限流恒流的模式；智能控制单元：通过电压监测单元、电阻R上电流及电流限制恒流单元提供的信号通过delta时延法实现对K101的时序控制。低成本全方位全兼容驱动装置能够在既不损坏灯管，亦不损坏镇流器的情况下实现电感式、耦合电子式、普通电子式、预热电子式四类型的兼容以及对市电直接输入的全兼容。

Description

低成本全方位全兼容驱动装置 技术领域
本发明涉及一种LED日光灯领域的LED驱动装置，尤其涉及一种低成本全方位全兼容驱动装置。
背景技术
世界上尚无已发布的全兼容日光灯驱动方案，已知的只有兼容某一类型的ET(电子变压器)或IT(电感变压器)，而已知的兼容线路非常的复杂，成本高、尺寸非常大。
发明内容
本发明所要解决的技术问题是针对上述现有技术的不足，提供一种既不损坏灯管，亦不损坏镇流器的情况下兼容既实现电感式、耦合电子式、普通电子式、预热电子式等四类型的兼容以及对市电直接输入的全兼容驱动装置。
为解决上述技术问题，本发明采取的技术方案为：低成本全方位全兼容驱动装置，包括智能控制单元、电流限制恒流单元、高频恒流控制IC、电压监测单元、LED灯串、电阻R、二极管D1、二极管D2、二极管D3、二极管D4、二极管D5、二极管D6、二极管D7、二极管D8、二极管D9、电感L、电容C、开关K101、开关K102、开关K103、第一输入触点A、第二输入触点B、第三输入触点C和第四输入触点D；开关K101、LED灯串、电感L、开关K103和电阻R依次串联；二极管D1阳极与第一输入点A电连接，阴极与开关K101电连接；二极管D2阳极与第二输入点B电连接，阴极与开关K101电连接；二极管D3阴极与第一输入点A电连接，阳极与电阻R电连接；二极管D4阴极与第二输入点B电连接，阳极与电阻R电连接；二极管D5阳极与第三输入点C电连接，阴极与开关K101电连接；二极管D6阳极与第四输入点D电连接，阴极与开关K101电连接；二极管D7阴极与第三输入点C电连接，阳极与电阻R电连接；二极管D8阴极与第四输入点D电连接，阳极与电阻R电连接；电容C与LED灯串并联，开关K102与电感L并联，二极管D9并联在开关K101、LED灯串和电感L之间；电压监测单元：用于检测开关K103上端电压并将检测到的电压值输送给高频恒流控制IC；高频恒流控制IC：根据电压监测单元输出的电压值和检测到的开关K103的电流值判断是否使K103进入高频BUCK PWM或者进入限流运行模式；电流限制恒流单元：用于通过监测电阻R的峰值电流并且通过开关K103进入限流恒流的模式，以防止电流过大；智能控制单元：通过电压监测单元、电阻R上电流及电流限制恒流单元提供的信号通过delta时延法实现对K101的时序控制。
作为本发明进一步改进的技术方案，所述LED灯串包括至少两个LED器件，所述LED器件为单颗LED灯珠或者LED灯串或者LED串并组合。
本发明启动时K101开通，K102关断，K103开通且限流模式开启，通过监测K103上端电压是否为市电模式；如果是市电模式，则保持K101和K102的状态，启动高频控制使K103进入BUCK PWM运行模式；如果不是市电模式，则保持K101和K103的状态，开通K102，也即短路电感，通过检测主线电流监测启动状态；如果不启动，则通过关断K101，然后延迟一段时间再开通K101来实现延迟触发。具体而言，本发明能实现两种判断：首先是判断是不是市电，然后判断到底是电子镇流器还是电感镇流器，这里面判断的依据分别是：
第一，市电的判断是通过电压监测单元对K103上端的电压的检测及判断，当K103上电压高于某一值时，电压监测单元就认为是市电进来了，从而将判断信号传输给高频恒流控制IC，该IC迅速进入高频控制K103，从而进入了高频降压控制；另外，在初始判断是否是市电时，为了防止市电的涌入破坏元器件，K103首先是通过电流限制恒流单元进入了一种限流恒流的模式，防止电流过大。
第二对于是电子镇流器还是电感镇流器，是通过对于最下端电阻上电流以及电压监测单元的电压的检测来智能控制K101，因为起初K101是导通的，如果这个时候，下面的电阻上还是没有电流，而且K103上的电压值也不高，说明不是市电，那么，智能控制单元就会将K101关闭，延迟一小段时间后再次开通K101，如果仍然不能正常工作，则逐步将延迟时间加长，直到***正常工作为止，这个方法可以称作delta时延法。
本发明中的输入点A、B、C和D为四个可任意接入的输入端点，电流限制恒流单元是一个监测并控制峰值电流的单元；高频恒流控制IC是一个高频降压恒流控制芯片；电压监测单元对K103上端电压的检测；智能控制单元是一个通过信号监测实现时序及模式的智能控制单元。本发明采用智能判断及补偿实现市电与电感镇流器/电子镇流器全兼容；电子和电感镇流器模式时是利用外部电感自动实现恒流，且具有限流控制；市电模式时是通过高频PWM模式实现恒流；而且LED直接作为负载，没有采用电容隔离；通过延时环节控制对不同ET/IT的需要；根据监测的电压、电流信号对输入状态智能判断。本发明能实现任意方向可插接、任意电子镇流器可兼容、任意电感镇流器可兼容、市电可兼容、任意可插拔(含热插拔)、通过UL漏电测试。总之，本发明能够在既不损坏灯管，亦不损坏镇流器的情况下兼容既实现电感式、耦合电子式、普通电子式、预热电子式等四类型的兼容以及对市电直接输入的全兼容。
附图说明
图1为本发明的电路原理示意图。
下面结合附图对具体实施方作进一步说明。
具体实施方式
实施例1
参见图1，本低成本全方位全兼容驱动装置，包括智能控制单元、电流限制恒流单元、高频恒流控制IC、电压监测单元、LED灯串、电阻R、二极管D1、二极管D2、二极管D3、二极管D4、二极管D5、二极管D6、二极管D7、二极管D8、二极管D9、电感L、电容C、开关K101、开关K102、开关K103、第一输入触点A、第二输入触点B、第三输入触点C和第四输入触点D；开关K101、LED灯串、电感L、开关K103和电阻R依次串联后与二极管D9并联；二极管D1阳极与第一输入点A电连接，阴极与开关K101电连接；二极管D2阳极与第二输入点B电连接，阴极与开关K101电连接；二极管D3阴极与第一输入点A电连接，阳极与电阻R电连接；二极管D4阴极与第二输入点B电连接，阳极与电阻R电连接；二极管D5阳极与第三输入点C电连接，阴极与开关K101电连接；二极管D6阳极与第四输入点D电连接，阴极与开关K101电连接；二极管D7阴极与第三输入点C电连接，阳极与电阻R电连接；二极管D8阴极与第四输入点D电连接，阳极与电阻R电连接；电容C与LED灯串并联，开关K102与电感L并联；电压监测单元：用于检测开关K103上端电压并将检测到的电压值输送给高频恒流控制IC；高频恒流控制IC：根据电压监测单元输出的电压值和检测到的开关K103的电流值判断是否使K103进入高频BUCK PWM或者进入限流运行模式；电流限制恒流单元：用于通过监测电阻R的峰值电流并且通过开关K103进入限流恒流的模式，以防止电流过大；智能控制单元：通过电压监测单元、电阻R上电流及电流限制恒流单元提供的信号通过delta时延法实现对K101的时序控制。所述LED灯串包括至少两个LED器件，所述LED器件为单颗LED灯珠或者LED灯串或者LED串并组合。

Claims (2)

  1. 一种低成本全方位全兼容驱动装置，其特征在于：包括智能控制单元、电流限制恒流单元、高频恒流控制IC、电压监测单元、LED灯串、电阻R、二极管D1、二极管D2、二极管D3、二极管D4、二极管D5、二极管D6、二极管D7、二极管D8、二极管D9、电感L、电容C、开关K101、开关K102、开关K103、第一输入触点A、第二输入触点B、第三输入触点C和第四输入触点D；开关K101、LED灯串、电感L、开关K103和电阻R依次串联后与二极管D9并联；二极管D1阳极与第一输入点A电连接，阴极与开关K101电连接；二极管D2阳极与第二输入点B电连接，阴极与开关K101电连接；二极管D3阴极与第一输入点A电连接，阳极与电阻R电连接；二极管D4阴极与第二输入点B电连接，阳极与电阻R电连接；二极管D5阳极与第三输入点C电连接，阴极与开关K101电连接；二极管D6阳极与第四输入点D电连接，阴极与开关K101电连接；二极管D7阴极与第三输入点C电连接，阳极与电阻R电连接；二极管D8阴极与第四输入点D电连接，阳极与电阻R电连接；电容C与LED灯串并联，开关K102与电感L并联；
    电压监测单元：用于检测开关K103上端电压并将检测到的电压值输送给高频恒流控制IC；
    高频恒流控制IC：根据电压监测单元输出的电压值和检测到的开关K103的电流值判断是否使K103进入高频BUCK PWM或者进入限流运行模式；
    电流限制恒流单元：用于通过监测电阻R的峰值电流并且通过开关K103进入限流恒流的模式，以防止电流过大；
    智能控制单元：通过电压监测单元、电阻R上电流及电流限制恒流单元提供的信号通过delta时延法实现对K101的时序控制。
  2. 根据权利要求1所述的低成本全方位全兼容驱动装置，其特征在于：所述LED灯串包括至少两个LED器件，所述LED器件为单颗LED灯珠或者LED灯串或者LED串并组合。
PCT/CN2015/073771 2014-11-21 2015-03-06 低成本全方位全兼容驱动装置 WO2016078253A1 (zh)

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CN105657895B (zh) * 2016-01-31 2019-06-21 惠州市时宇虹光电科技有限公司 一种led灯驱动同时适配市电输入和电子镇流器输入的方法
CN106658845B (zh) * 2016-12-20 2018-07-03 深圳市福瑞新科技有限公司 智能全兼容led驱动电源电路
CN107070197A (zh) * 2016-12-30 2017-08-18 苏州佳世达光电有限公司 电源供应电路及投影装置
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