CN104540265B - Low-cost omnidirectional fully-compatible driving device - Google Patents

Abstract

Translated fromChinese

本发明公开了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。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。

The invention discloses a low-cost, all-round and fully compatible driving device. The voltage monitoring unit is used to detect the upper end voltage of the switch K103 and send it to the high-frequency constant current control IC; the high-frequency constant current control IC is based on the voltage value output by the voltage monitoring unit and the detected switch The current value of K103 judges whether to make K103 enter the high-frequency BUCK PWM or enter the current-limiting operation mode; the current-limiting constant-current unit is used to monitor the peak current of the resistor R and enter the current-limiting and constant-current mode through the switch K103; the intelligent control unit: Through the signal provided by the voltage monitoring unit, the current on the resistor R and the current limiting constant current unit, the time sequence control of K101 is realized through the delta time delay method. The invention can be compatible with four types of inductive type, coupled electronic type, common electronic type, and preheating electronic type without damaging the lamp tube or the ballast, and fully compatible with the direct input of mains power. compatible.

Description

Translated fromChinese

低成本全方位全兼容驱动装置Low-cost all-round fully compatible drive unit

技术领域technical field

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。The invention relates to an LED driving device in the field of LED fluorescent lamps, in particular to a low-cost, omnidirectional and fully compatible driving device.

背景技术Background technique

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。There is no published fully compatible fluorescent lamp drive solution in the world, only a certain type of ET (electronic transformer) or IT (inductive transformer) is known to be compatible, and the known compatible circuits are very complicated, costly, and very large in size.

发明内容Contents of the invention

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。The technical problem to be solved by the present invention is to aim at the deficiencies of the above-mentioned prior art, and to provide a kind of inductive type, coupled electronic type, ordinary electronic type, preheating Compatible with four types such as electronic type and fully compatible drive device for direct input of mains power.

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，其中开关K101、LED灯串、电感L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，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。In order to solve the above-mentioned technical problems, 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 light 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, second The second input contact B, the third input contact C and the fourth input contact D; the switch K101, the LED light string, the inductor L, the switch K103 and the resistor R are connected in series in sequence, wherein the switch K101, the LED light string and the inductor L are connected in series After that, it is connected in parallel with diode D9; the anode of diode D1 is electrically connected to the first input point A, and the cathode is electrically connected to switch K101; the anode of diode D2 is electrically connected to the second input point B, and the cathode is electrically connected to switch K101; the cathode of diode D3 is electrically connected to the first input point The input point A is electrically connected, and the anode is electrically connected to the resistor R; the cathode of the diode D4 is electrically connected to the second input point B, and the anode is electrically connected to the resistor R; the anode of the diode D5 is electrically connected to the third input point C, and the cathode is electrically connected to the switch K101 The anode of the diode D6 is electrically connected to the fourth input point D, and the cathode is electrically connected to the switch K101; the cathode of the diode D7 is electrically connected to the third input point C, and the anode is electrically connected to the resistor R; the cathode of the diode D8 is electrically connected to the fourth input point D , the anode is electrically connected to the resistor R; the capacitor C is connected in parallel with the LED lamp string, the switch K102 is connected in parallel with the inductor L, and the diode D9 is connected in parallel between the switch K101, the LED lamp string and the inductor L; the voltage monitoring unit: used to detect the upper terminal voltage of the switch K103 And send the detected voltage value to the high frequency constant current control IC; high frequency constant current control IC: according to the voltage value output by the voltage monitoring unit and the detected current value of the switch K103, judge whether to make K103 enter the high frequency BUCK PWM or enter the current limiting operation mode; current limiting constant current unit: used to monitor the peak current of the resistor R and enter the current limiting constant current mode through the switch K103 to prevent excessive current; intelligent control unit: through the voltage monitoring unit, the current on the resistor R and the current The timing control of K101 is realized through the delta time delay method by limiting the signal provided by the constant current unit.

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串并组合。As a further improved technical solution of the present invention, the LED lamp string includes at least two LED devices, and the LED devices are a single LED lamp bead or a combination of LED strings and parallels.

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：When the present invention starts, K101 is turned on, K102 is turned off, K103 is turned on and the current-limiting mode is turned on. By monitoring whether the upper end voltage of K103 is in the mains mode; 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, the short-circuit inductance, and monitor the start-up state by detecting the main line current; if it does not start, turn off K101, and then delay for a period of time Then turn on K101 to realize delayed triggering. Specifically, the present invention can realize two kinds of judgments: firstly, it is judged whether it is mains electricity, and then it is judged whether it is an electronic ballast or an inductive ballast, and the basis for judging here are respectively:

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。First, the judgment of mains power is through the detection and judgment of the voltage at the upper end of K103 by the voltage monitoring unit. High-frequency constant current control IC, the IC quickly enters the high-frequency control K103, and thus enters the high-frequency step-down control; in addition, when initially judging whether it is mains power, in order to prevent the influx of mains power from damaging components, K103 first passes the current The limiting constant current unit enters a current limiting and constant current mode to prevent excessive current.

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，直到系统正常工作为止，这个方法可以称作delta时延法。The second is whether it is an electronic ballast or an inductive ballast, intelligently control K101 by detecting the current on the lowermost resistor and the voltage of the voltage monitoring unit, because K101 is turned on at first, if at this time, the lower resistor There is still no current on the power supply, and the voltage value on K103 is not high, indicating that it is not mains power. Then, the intelligent control unit will turn off K101, and turn on K101 again after a short delay. If it still cannot work normally, it will gradually delay The time is lengthened until the system works normally. This method can be called the delta time delay method.

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。The input points A, B, C and D in the present invention are four input terminals that can be connected arbitrarily, the current limiting constant current unit is a unit that monitors and controls 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 upper end voltage of K103; the intelligent control unit is an intelligent control unit that realizes timing and mode through signal monitoring. The invention adopts intelligent judgment and compensation to realize the full compatibility between mains power and inductive ballast/electronic ballast; in electronic and inductive ballast mode, external inductance is used to automatically realize constant current, and it has current limiting control; in mains power mode The constant current is realized through high-frequency PWM mode; and the LED is directly used as the load without capacitive isolation; the needs of different ET/IT are controlled through the delay link; the input state is intelligently judged according to the monitored voltage and current signals. The invention can be plugged in any direction, compatible with any electronic ballast, compatible with any inductance ballast, compatible with mains electricity, pluggable (including hot plugging) at any time, and passed the UL leakage test. In a word, the present invention can be compatible with four types of inductive type, coupled electronic type, common electronic type, and preheating electronic type without damaging the lamp tube or the ballast, and can directly input the mains power. fully compatible.

附图说明Description of drawings

图1为本发明的电路原理示意图。Fig. 1 is a schematic diagram of the circuit principle of the present invention.

下面结合附图对具体实施方作进一步说明。The specific implementation will be further described below in conjunction with the accompanying drawings.

具体实施方式detailed description

实施例1Example 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，其中开关K101、LED灯串、电感L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串并组合。Referring to Figure 1, this low-cost, all-round and fully compatible drive 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 light string, a resistor R, a diode D1, a diode D2, a 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, second input contact B, third input Contact C and the fourth input contact D; switch K101, LED light string, inductor L, switch K103 and resistor R are connected in series in sequence, wherein switch K101, LED light string, inductor L are connected in parallel with diode D9 after being connected in series; diode D1 anode It is electrically connected to the first input point A, and the cathode is electrically connected to the switch K101; the anode of the diode D2 is electrically connected to the second input point B, and the cathode is electrically connected to the switch K101; the cathode of the diode D3 is electrically connected to the first input point A, and the anode is electrically connected to the resistor R is electrically connected; the cathode of the diode D4 is electrically connected to the second input point B, and the anode is electrically connected to the resistor R; the anode of the diode D5 is electrically connected to the third input point C, and the cathode is electrically connected to the switch K101; the anode of the diode D6 is electrically connected to the fourth input point D is electrically connected, the cathode is electrically connected to the switch K101; the cathode of the diode D7 is electrically connected to the third input point C, and 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; C is connected in parallel with LED lamp series, switch K102 is connected in parallel with inductor L; voltage monitoring unit: used to detect the upper terminal voltage of switch K103 and send the detected voltage value to the high-frequency constant current control IC; high-frequency constant current control IC: according to the output of the voltage monitoring unit The voltage value and the detected current value of the switch K103 determine whether to make K103 enter the high-frequency BUCK PWM or enter the current-limiting operation mode; the current limiting constant current unit: used to monitor the peak current of the resistor R and enter the current limiting constant In order to prevent excessive current; intelligent control unit: through the signal provided by the voltage monitoring unit, the current on the resistor R and the current limiting constant current unit, the timing control of K101 is realized through the delta time delay method. The LED lamp string includes at least two LED devices, and the LED devices are a single LED lamp bead or a combination of LED strings and parallels.

Claims (2)

1. a kind of comprehensive full compatible driving device of low cost it is characterised in that：Including intelligent control unit, current limit constant currentUnit, high frequency current constant control IC, voltage monitoring unit, LED string, resistance R, diode D1, diode D2, diode D3, twoPole pipe D4, diode D5, diode D6, diode D7, diode D8, diode D9, inductance L, electric capacity C, switch K101, switchK102, switch K103, the first input contact A, the second input contact B, the 3rd input contact C and the 4th input contact D；SwitchK101, LED string, inductance L, switch K103 and resistance R are sequentially connected in series, and its breaker in middle K101, LED string, inductance L are sequentially connected in seriesIn parallel with diode D9 afterwards；Diode D1 anode is electrically connected with the first input point A, and negative electrode is electrically connected with switch K101；DiodeD2 anode is electrically connected with the second input point B, and negative electrode is electrically connected with switch K101；Diode D3 negative electrode and the first input point A are electrically connectedConnect, anode is electrically connected with resistance R；Diode D4 negative electrode is electrically connected with the second input point B, and anode is electrically connected with resistance R；DiodeD5 anode is electrically connected with the 3rd input point C, and negative electrode is electrically connected with switch K101；Diode D6 anode and the 4th input point D are electrically connectedConnect, negative electrode is electrically connected with switch K101；Diode D7 negative electrode is electrically connected with the 3rd input point C, and anode is electrically connected with resistance R；TwoPole pipe D8 negative electrode is electrically connected with the 4th input point D, and anode is electrically connected with resistance R；Electric capacity C and LED connection in series-parallel, switch K102 withInductance L is in parallel；

Voltage monitoring unit：It is conveyed to high frequency current constant control for terminal voltage in detection switch K103 and by the magnitude of voltage detectingIC；

High frequency current constant control IC：The current value of the magnitude of voltage according to voltage monitoring unit output and the switch K103 detecting judgesK103 whether is made to enter high frequency BUCK PWM or enter current limliting operational mode；

Current limit constant current unit：Enter current limliting constant current for the peak point current by monitoring resistor R and by switching K103Pattern, to prevent electric current excessive；

Intelligent control unit：Passed through by the signal that electric current on voltage monitoring unit, resistance R and current limit constant current unit provideDelta time delay method realizes the sequencing contro to K101.

2. the comprehensive full compatible driving device of low cost according to claim 1 it is characterised in that：Described LED string bagInclude at least two LED component, described LED component is single LEDs lamp bead or LED strip and combines.