WO2019165625A1 - 兼容镇流器的驱动电路及 led 装置 - Google Patents

兼容镇流器的驱动电路及 led 装置 Download PDF

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Publication number
WO2019165625A1
WO2019165625A1 PCT/CN2018/077758 CN2018077758W WO2019165625A1 WO 2019165625 A1 WO2019165625 A1 WO 2019165625A1 CN 2018077758 W CN2018077758 W CN 2018077758W WO 2019165625 A1 WO2019165625 A1 WO 2019165625A1
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Prior art keywords
module
ballast
rectifier
current limiting
switch
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PCT/CN2018/077758
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English (en)
French (fr)
Inventor
范传玺
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佛山市长晶电子科技有限公司
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Priority to PCT/CN2018/077758 priority Critical patent/WO2019165625A1/zh
Publication of WO2019165625A1 publication Critical patent/WO2019165625A1/zh

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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/395—Linear regulators
    • 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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the invention belongs to the technical field of electronic circuits, and in particular relates to a driving circuit and an LED device compatible with a ballast.
  • ballast In the field of lighting, fluorescent lamps have been widely used in the past few decades.
  • the lighting of the fluorescent lamp needs to be driven by a ballast, and the ballast is divided into two types: the magnetic ballast and the electronic ballast. Regardless of the type of ballast, a high-voltage trigger of about 1000V is required at startup to activate the fluorescent lamp.
  • the impedance of the fluorescent lamp is negative resistance, it is necessary to limit the operating current by using an inductive ballast or an electronic ballast to stabilize the reliable operation. Therefore, in traditional fluorescent lamp fixtures, there are matching magnetic ballasts or electronic ballasts.
  • the technical solutions are basically the same; and the electronic ballast has many technical solutions, such as ordinary preheating type, chip preheating type, quick start type, instant start type, etc., and electronic ballasting. There are also various protections such as open circuit, short circuit, and end of life.
  • LED lighting is a hot spot and trend in the development of today's lighting.
  • the object of the present invention is to provide a driving circuit and an LED device compatible with a ballast, aiming at solving the existing LED lamp driving technology.
  • the LED lamp is activated at the moment of being incompatible with the ballast. Burnt out problem.
  • a first aspect of the present invention provides a drive circuit compatible with a ballast, which is connected to a power signal, and the drive circuit includes:
  • a rectifier module for rectifying the power signal
  • a detection selection module for detecting an access to the electronic ballast or the magnetic ballast, and correspondingly outputting the first control signal or the second control signal;
  • rectifier module and the detection selection module are connected to drive the constant current driving module of the LED lamp according to the second control signal.
  • a second aspect of the present invention provides an LED device including a driving circuit and a power supply signal for supplying power to the driving circuit, the driving circuit comprising:
  • a rectifier module for rectifying the power signal
  • a detection selection module for detecting an access to the electronic ballast or the magnetic ballast, and correspondingly outputting the first control signal or the second control signal;
  • rectifier module and the detection selection module are connected to drive the constant current driving module of the LED lamp according to the second control signal.
  • the driving circuit and the LED device of the compatible ballast provided by the invention control the constant current driving module to drive the LED lamp by detecting the access to the ballast ballast; when the electronic ballast is detected, the constant current is turned off Driving the module and controlling the current limiting module to drive the LED lamp, thereby preventing the voltage generated by the startup from burning out the LED lamp during the starting phase of the electronic ballast, and realizing the driving effect of the compatible ballast for the LED lamp, and solving In the existing LED lamp driving technology, when the LED lamp is used instead of the fluorescent lamp, the LED lamp is burned out at the startup moment due to the inability to be compatible with the ballast.
  • FIG. 1 is a block diagram showing the structure of a drive circuit of a compatible ballast provided by the present invention.
  • FIG. 2 is a circuit diagram showing an example of a drive circuit compatible with a ballast provided by the present invention.
  • FIG. 3 is a circuit diagram showing an example of a driver circuit compatible with a ballast connected to an inductor ballast according to a first embodiment of the present invention.
  • FIG. 4 is a circuit diagram showing an example of a driver circuit compatible with a ballast connected to an electronic ballast according to a second embodiment of the present invention.
  • the above-mentioned compatible ballast drive circuit and LED device can be directly connected to the mains input, and can be compatible with the magnetic ballast or the electronic ballast.
  • the constant current driving module is used to drive the LED lamp to work; when the input is determined to be an electronic ballast, all the driving circuits and the LED lamps are turned off until the electronic ballast is completed.
  • switching to the current-limiting module drives the LED lamp to work, so as to achieve the startup phase of the electronic ballast, avoiding the high voltage generated by the startup and damaging the drive circuit and the LED lamp.
  • the driving circuit of the compatible ballast is connected to the power signal 101, and the driving circuit includes a rectifying module 102, a detecting and selecting module 105, a current limiting module 103, and a constant current driving module 104.
  • the rectifier module 102 is configured to rectify the power signal 101.
  • the detection selection module 105 is configured to detect an access electronic ballast or an inductive ballast, and correspondingly output a first control signal or a second control signal.
  • the current limiting module 103 is connected to the rectifier module 102 and the detection selection module 105 for driving the LED lamp 106 according to the first control signal.
  • the constant current driving module 104 is connected to the rectifier module 102 and the detection selection module 105 for driving the LED lamp 106 according to the second control signal.
  • the detection selection module 105 selects the constant current driving module 104 to supply energy to the LED lamp 106, and turns off.
  • the current limiting module 103 when the input power signal 101 passes through the electronic ballast, the detection selection module 105 first turns off all circuits until the electronic ballast completes the high voltage startup, and the current limiting module 103 is selected to provide the LED lamp 106. Energy, and the constant current drive module 104 is turned off.
  • the rectifier module 102 includes a rectifier bridge, and the rectifier bridge includes a first rectifier diode ZD1, a second rectifier diode ZD2, a third rectifier diode ZD3, and a fourth rectifier diode ZD4.
  • the first AC input terminal of the rectifier bridge And the second AC input terminal is connected to the power signal 101, the first DC output end of the rectifier bridge is grounded, and the second DC output end of the rectifier bridge is an output end of the rectifier module 102.
  • the detection selection module 105 includes a gate switch SW1, a mechanical switch SW2, an inverter NOT1, and a detection chip U1;
  • the controlled end of the strobe switch SW1 (ie, the first pin in FIG. 2) is connected to the rectifying module 102, and the first strobing end of the strobe switch SW1 (ie, the second pin in FIG. 2) is connected to the constant current driving module. 104, the second strobe end of the strobe switch SW1 (ie, the third pin in FIG. 2) is connected to the first end of the mechanical switch SW2, the second end of the mechanical switch SW2 is grounded, and the input end IN1 and the first end of the detecting chip U1 are detected.
  • the detection chip U1 is a detection chip of the type LTC1403ACMSE.
  • the type of the detection chip is not limited, as long as the function described in the detection chip U1 of the embodiment can be achieved.
  • the detecting chip U1 can also be replaced by the existing detecting and strobing circuit, as long as the function described by the detecting chip U1 of the embodiment can be achieved.
  • the current limiting module 103 includes a current limiting chip U2, and the input end of the current limiting chip U2 (ie, the fifth pin of FIG. 2) and the output end (ie, the sixth pin of FIG. 2) are connected for detection.
  • the module 105 is selected, and the controlled end of the current limiting chip U2 (ie, the third pin of FIG. 2) is connected to the rectifying module 102, and the grounding end of the current limiting chip U2 (ie, the fourth pin of FIG. 2) is grounded, and the current limiting chip U2 is connected.
  • the current limiting chip U2 is a current limiting chip of the type RT9701YB1721.
  • the type of the current limiting chip is not limited, as long as the function described in the current limiting chip U2 of the embodiment can be achieved.
  • the current limiting chip U2 can also be replaced by an existing current limiting circuit, as long as the function described by the current limiting chip U2 of the embodiment can be achieved.
  • the constant current driving module 104 includes a first capacitor C1, a second capacitor C2, a first inductor L1, a first diode D1, a first switching transistor Q1, and a control circuit.
  • the first end of the first capacitor C1 is connected to the first end of the first inductor L1 and is connected to the rectifier module 102.
  • the second end of the first capacitor C1 is grounded, and the second end of the first inductor L1 is connected to the first diode.
  • the anode of the tube D1 and the input end of the first switch tube Q1 are connected in common, and the input end of the control circuit is connected to the detection selection module 105.
  • the output end of the control circuit is connected to the controlled end of the first switch tube Q1, and the output of the first switch tube Q1
  • the terminal is grounded, the cathode of the first diode D1 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is connected to the detection module 105.
  • the first switching transistor Q1 can be a field effect transistor or a triode.
  • the drain, the source and the gate of the FET correspond to the input end, the output end and the controlled end of the first switching transistor Q1, respectively.
  • the collector and the emitter of the triode And the bases respectively correspond to the input end, the output end and the controlled end of the first switch tube Q1.
  • the above control circuit is a prior art, and the control circuit controls the constant current drive module 104.
  • FIG. 3 shows an example circuit of the drive circuit of the compatible ballast provided by the first embodiment of the present invention to access the magnetic ballast.
  • the parts related to the embodiment are shown, which are as follows:
  • the detection selection module 105 detects that the first detection terminal R1 and the second detection terminal R2 are not connected, and then outputs the second.
  • the control signal keeps the mechanical switch SW2 off, the controlled end of the SW1 strobe switch is connected to the second strobe, and the control circuit is operated by the inverter NOT1.
  • the commercial power VCC is directly input or passed through the magnetic ballast ZL1, and sequentially passes through the rectifier bridge, the first capacitor C1, the first inductor L1, the first diode D1, the second capacitor C2, and the first switch tube Q1.
  • the control circuit and the strobe switch SW1 are then energized by the LED lamp 106 (shown in FIG. 3 by the LED D2).
  • FIG. 4 shows an example circuit of the driver circuit of the compatible ballast connected to the electronic ballast according to the second embodiment of the present invention. For the convenience of description, only the parts related to the embodiment are shown, which are as follows:
  • the detection selection module 105 detects that the first detection terminal R1 and the second detection terminal R2 are respectively connected to the fourth pin and the third of the electronic ballast ZL1. 3 pin, the detection selection module 105 keeps all the driving circuits off through the second output terminal until the start and warm-up period of the electronic ballast ZL1 is completed, and then outputs the first control signal to make the mechanical switch SW2 be turned on, then strobe The controlled end of the switch SW1 is connected to the first strobe and the control circuit is turned off by the inverter NOT1.
  • the commercial power VCC supplies energy to the LED lamp 106 (shown by the light-emitting diode D2 in FIG. 4) through the electronic ballast ZL1, the rectifier bridge, the current limiting module 103, the strobe switch SW1, the mechanical switch SW2, and the second capacitor C2. .
  • the present invention also provides an LED device comprising a drive circuit as described above and a power supply signal for supplying power to the drive circuit.
  • the driving circuit and the LED device of the compatible ballast control the constant current driving module to drive the LED lamp by detecting the access to the ballast ballast; when detecting the access to the electronic ballast, Turning off the constant current driving module, and controlling the current limiting module to drive the LED lamp, thereby preventing the LED generated from burning out during the starting phase of the electronic ballast, and implementing the ballast compatible with the LED lamp.
  • the driving effect of the existing LED lamp driving technology is that when the LED lamp is used instead of the fluorescent lamp, the LED lamp is burned out due to the inability to be compatible with the ballast.

Abstract

一种兼容镇流器的驱动电路及LED装置，通过检测到接入电感镇流器，控制恒流驱动模块(104)驱动LED灯(106)；当检测到接入电子镇流器时，则关断恒流驱动模块(104)，并控制限流模块(103)驱动LED灯(106)，由此使得在电子镇流器启动阶段，避免启动产生的电压将LED灯(106)烧坏，并且实现了针对LED灯(106)可兼容镇流器的驱动效果，解决现有的LED灯驱动技术中存在着当LED灯替代荧光灯时，因无法兼容镇流器而导致启动瞬间LED灯被烧坏的问题。

Description

兼容镇流器的驱动电路及LED装置 技术领域
本发明属于电子电路技术领域，尤其涉及兼容镇流器的驱动电路及LED装置。
 背景技术
在照明领域中，过去的几十年间荧光灯获得了广泛的应用。而点亮荧光灯则需要采用镇流器进行驱动，镇流器分为电感镇流器和电子镇流器两大类。无论是哪类镇流器，在启动时都需要约1000V的高压触发才能激发荧光灯。
在正常工作时，由于荧光灯的阻抗为负阻特性，则需要利用电感镇流器或电子镇流器对工作电流进行限制才能稳定可靠的工作。因此，在传统的荧光灯灯具中都有与之配套的电感镇流器或电子镇流器。对电感镇流器而言，其技术方案基本相差不大；而电子镇流器的技术方案繁多，如普通预热型、芯片预热型、快速启动型、瞬时启动型等，而且电子镇流器还有各种保护，如开路、短路、寿命终结等。
LED灯照明为当今照明发展的热点与趋势。作为新一代的照明方案，其与荧光灯照明方案相比，具有节能、无汞、稳定长寿命等诸多优点，并且驱动要求也比较简单，既不需高压启动、也不需要预热，只需要一个恒定的电流就可以进行流驱动工作。
在现有的LED灯驱动技术中，大多只能实现市电输入，而如果直接在传统的荧光灯照明灯具中采用LED灯替代荧光灯，就需要把镇流器取出，并重新调光灯具的电路布线，否则，在镇流器启动时产生的几百到几千伏的高压就会将替换的LED灯直接烧坏。
因此，现有的LED灯驱动技术中存在着当LED灯替代荧光灯时，因无法兼容镇流器而导致启动瞬间LED灯被烧坏的问题。
 技术问题
本发明的目的在于提供兼容镇流器的驱动电路及LED装置，旨在解决现有的LED灯驱动技术中存在着当LED灯替代荧光灯时，因无法兼容镇流器而导致启动瞬间LED灯被烧坏的问题。
 技术解决方案
本发明第一方面提供了一种兼容镇流器的驱动电路，接电源信号，所述驱动电路包括：
用于对所述电源信号进行整流的整流模块；
用于检测到接入电子镇流器或电感镇流器，相应输出第一控制信号或第二控制信号的检测选取模块；
与所述整流模块以及所述检测选取模块相连接，用于根据所述第一控制信号驱动LED灯的限流模块；以及
与所述整流模块以及所述检测选取模块相连接，用于根据所述第二控制信号驱动所述LED灯的恒流驱动模块。
本发明第二方面提供了一种LED装置，包括驱动电路以及对所述驱动电路进行供电的电源信号，所述驱动电路包括：
用于对所述电源信号进行整流的整流模块；
用于检测到接入电子镇流器或电感镇流器，相应输出第一控制信号或第二控制信号的检测选取模块；
与所述整流模块以及所述检测选取模块相连接，用于根据所述第一控制信号驱动LED灯的限流模块；以及
与所述整流模块以及所述检测选取模块相连接，用于根据所述第二控制信号驱动所述LED灯的恒流驱动模块。
 有益效果
本发明提供的兼容镇流器的驱动电路及LED装置，通过检测到接入电感镇流器，控制恒流驱动模块驱动LED灯；当检测到接入电子镇流器时，则关断恒流驱动模块，并控制限流模块驱动LED灯，由此使得在电子镇流器启动阶段，避免启动产生的电压将LED灯烧坏，并且实现了针对LED灯可兼容镇流器的驱动效果，解决现有的LED灯驱动技术中存在着当LED灯替代荧光灯时，因无法兼容镇流器而导致启动瞬间LED灯被烧坏的问题。
 附图说明
图1是本发明提供的兼容镇流器的驱动电路的模块结构示意图。
图2是本发明提供的兼容镇流器的驱动电路的示例电路图。
图3是本发明第一实施例提供的兼容镇流器的驱动电路接入电感镇流器的示例电路图。
图4是本发明第二实施例提供的兼容镇流器的驱动电路接入电子镇流器的示例电路图。
 本发明的实施方式
为了使本方案要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本方案进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本方案，并不用于限定本方案。
上述的兼容镇流器的驱动电路及LED装置，既可以直接接市电输入，又可以兼容电感镇流器或电子镇流器。当判断输入为市电或电感镇流器时，利用恒流驱动模块驱动LED灯工作；当判断输入为电子镇流器时，先关断所有的驱动电路和LED灯，直到电子镇流器完成高压启动阶段，再切换到限流模块驱动LED灯工作，从而达到在电子镇流器的启动阶段，避免启动产生的高压将驱动电路和LED灯损坏。
为了使本领域的技术人员更好地理解本方案的技术方案，下面结合附图和具体实施例对本方案作进一步的详细说明。
图1示出了本发明提供的兼容镇流器的驱动电路的模块结构，为了便于说明，仅示出了与本实施例相关的部分，详述如下：
上述兼容镇流器的驱动电路，接电源信号101，该驱动电路包括整流模块102、检测选取模块105、限流模块103以及恒流驱动模块104。
整流模块102用于对电源信号101进行整流。
检测选取模块105用于检测到接入电子镇流器或电感镇流器，相应输出第一控制信号或第二控制信号。
限流模块103与整流模块102以及检测选取模块105相连接，用于根据第一控制信号驱动LED灯106。
恒流驱动模块104与整流模块102以及检测选取模块105相连接，用于根据第二控制信号驱动LED灯106。
作为本发明一实施例，上述驱动电路中，当输入的电源信号101为市电或经过电感镇流器时，检测选取模块105将选用恒流驱动模块104为LED灯106提供能量，且关断限流模块103；当输入的电源信号101经过电子镇流器时，检测选取模块105首先会关断所有电路，直到电子镇流器完成高压启动后，将选用限流模块103为LED灯106提供能量，且关断恒流驱动模块104。
图2示出了本发明提供的兼容镇流器的驱动电路的示例电路，为了便于说明，仅示出了与本实施例相关的部分，详述如下：
作为本发明一实施例，上述整流模块102包括整流桥，整流桥包括第一整流二极管ZD1、第二整流二极管ZD2、第三整流二极管ZD3以及第四整流二极管ZD4，整流桥的第一交流输入端和第二交流输入端接电源信号101，整流桥的第一直流输出端接地，整流桥的第二直流输出端为整流模块102的输出端。
作为本发明一实施例，上述检测选取模块105包括选通开关SW1、机械开关SW2、反相器NOT1以及检测芯片U1；
选通开关SW1的受控端（即图2中的第1管脚）接整流模块102，选通开关SW1的第一选通端（即图2中的第2管脚）接恒流驱动模块104，选通开关SW1的第二选通端（即图2中的第3管脚）接机械开关SW2的第一端，机械开关SW2的第二端接地，检测芯片U1的输入端IN1和第一输出端OUT1接限流模块103，检测芯片U1的第二输出端OUT2接反相器NOT1的输入端，反相器NOT1的输出端接恒流驱动模块104。在本实施例中，检测芯片U1采用型号为LTC1403ACMSE的检测芯片，当然，检测芯片的型号不做限定，只要能达到与本实施例检测芯片U1所述的功能作用亦可。具体的，检测芯片U1也可采用现有的检测选通电路代替，只要能达到本实施例检测芯片U1所述的功能作用亦可。
作为本发明一实施例，上述限流模块103包括限流芯片U2，限流芯片U2的输入端（即图2的第5管脚）和输出端（即图2的第6管脚）接检测选取模块105，限流芯片U2的受控端（即图2的第3管脚）接整流模块102，限流芯片U2的接地端（即图2的第4管脚）接地，限流芯片U2的第一串口端（即图2的第1管脚）和第二串口端（即图2的第2管脚）分别接第一检测端子R1和第二检测端子R2。在本实施例中，限流芯片U2采用型号为RT9701YB1721的限流芯片，当然，限流芯片的型号不做限定，只要能达到与本实施例限流芯片U2所述的功能作用亦可。具体的，限流芯片U2也可采用现有的限流电路代替，只要能达到本实施例限流芯片U2所述的功能作用亦可。
作为本发明一实施例，上述恒流驱动模块104包括第一电容C1、第二电容C2、第一电感L1、第一二极管D1、第一开关管Q1以及控制电路；
第一电容C1的第一端与第一电感L1的第一端共接并与整流模块102相连接，第一电容C1的第二端接地，第一电感L1的第二端与第一二极管D1的阳极以及第一开关管Q1的输入端共接，控制电路的输入端接检测选取模块105，控制电路的输出端接第一开关管Q1的受控端，第一开关管Q1的输出端接地，第一二极管D1的阴极接第二电容C2的第一端，第二电容C2的第二端接检测选取模块105。第一开关管Q1可以为场效应管或者三极管，场效应管的漏极、源极以及栅极分别对应第一开关管Q1的输入端、输出端以及受控端，三极管的集电极、发射极以及基极分别对应第一开关管Q1的输入端、输出端以及受控端。上述的控制电路为现有技术，该控制电路是对恒流驱动模块104进行控制。
图3示出了本发明第一实施例提供的兼容镇流器的驱动电路接入电感镇流器的示例电路，为了便于说明，仅示出了与本实施例相关的部分，详述如下：
作为本发明一实施例，当输入ACL和ACN接市电VCC或经过电感镇流器ZL1时，检测选取模块105通过检测到第一检测端子R1和第二检测端子R2无连接，然后输出第二控制信号使得机械开关SW2保持关断，则SW1选通开关的受控端与第二选通端相连接，并通过反向器NOT1使得控制电路工作。此时，市电VCC直接输入或通过电感镇流器ZL1，并依序通过整流桥、第一电容C1、第一电感L1、第一二极管D1、第二电容C2、第一开关管Q1、控制电路以及选通开关SW1，然后给LED灯106（图3采用发光二极管D2表示）提供能量。
图4示出了本发明第二实施例提供的兼容镇流器的驱动电路接入电子镇流器的示例电路，为了便于说明，仅示出了与本实施例相关的部分，详述如下：
作为本发明一实施例，当输入接电子镇流器ZL2时，检测选取模块105通过检测到第一检测端子R1和第二检测端子R2分别连接到电子镇流器ZL1的第4管脚和第3管脚，检测选取模块105通过第二输出端保持所有驱动电路关断，直到电子镇流器ZL1的启动和预热期完成，然后输出第一控制信号使得机械开关SW2导通，则选通开关SW1的受控端与第一选通端连接，并通过反向器NOT1使得控制电路关断。此时，市电VCC通过电子镇流器ZL1、整流桥、限流模块103、选通开关SW1、机械开关SW2以及第二电容C2，给LED灯106（图4采用发光二极管D2表示）提供能量。
本发明还提供了一种LED装置，该LED装置包括如上述所述的驱动电路以及对所述驱动电路进行供电的电源信号。
综上，本发明实施例提供的兼容镇流器的驱动电路及LED装置，通过检测到接入电感镇流器，控制恒流驱动模块驱动LED灯；当检测到接入电子镇流器时，则关断恒流驱动模块，并控制限流模块驱动LED灯，由此使得在电子镇流器启动阶段，避免启动产生的电压将LED灯烧坏，并且实现了针对LED灯可兼容镇流器的驱动效果，解决现有的LED灯驱动技术中存在着当LED灯替代荧光灯时，因无法兼容镇流器而导致启动瞬间LED灯被烧坏的问题。
本文中应用了具体个例对本方案的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本方案的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本方案原理的前提下，还可以对本方案进行若干改进和修饰，这些改进和修饰也落入本方案权利要求的保护范围内。
以上所述仅为本方案的较佳实施例而已，并不用以限制本方案，凡在本方案的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本方案的保护范围之内。

Claims (10)

  1. 一种兼容镇流器的驱动电路，接电源信号，其特征在于，所述驱动电路包括：
    用于对所述电源信号进行整流的整流模块；
    用于检测到接入电子镇流器或电感镇流器，相应输出第一控制信号或第二控制信号的检测选取模块；
    与所述整流模块以及所述检测选取模块相连接，用于根据所述第一控制信号驱动LED灯的限流模块；以及
    与所述整流模块以及所述检测选取模块相连接，用于根据所述第二控制信号驱动所述LED灯的恒流驱动模块。
  2. 如权利要求1所述的驱动电路，其特征在于，所述整流模块包括整流桥，
    所述整流桥的第一交流输入端和第二交流输入端接所述电源信号，所述整流桥的第一直流输出端接地，所述整流桥的第二直流输出端为所述整流模块的输出端。
  3. 如权利要求1所述的驱动电路，其特征在于，所述检测选取模块包括：
    选通开关、机械开关、反相器以及检测芯片；
    所述选通开关的受控端接所述整流模块，所述选通开关的第一选通端接所述恒流驱动模块，所述选通开关的第二选通端接所述机械开关的第一端，所述机械开关的第二端接地，所述检测芯片的输入端和第一输出端接所述限流模块，所述检测芯片的第二输出端接所述反相器的输入端，所述反相器的输出端接所述恒流驱动模块。
  4. 如权利要求1所述的驱动电路，其特征在于，所述限流模块包括限流芯片，
    所述限流芯片的输入端和输出端接所述检测选取模块，所述限流芯片的受控端接所述整流模块，所述限流芯片的接地端接地。
  5. 如权利要求1所述的驱动电路，其特征在于，所述恒流驱动模块包括：
    第一电容、第二电容、第一电感、第一二极管、第一开关管以及控制电路；
    所述第一电容的第一端与所述第一电感的第一端共接并与所述整流模块相连接，所述第一电容的第二端接地，所述第一电感的第二端与所述第一二极管的阳极以及所述第一开关管的输入端共接，所述控制电路的输入端接所述检测选取模块，所述控制电路的输出端接所述第一开关管的受控端，所述第一开关管的输出端接地，所述第一二极管的阴极接所述第二电容的第一端，所述第二电容的第二端接所述检测选取模块。
  6. 一种LED装置，包括驱动电路以及对所述驱动电路进行供电的电源信号，其特征在于，所述驱动电路包括：
    用于对所述电源信号进行整流的整流模块；
    用于检测到接入电子镇流器或电感镇流器，相应输出第一控制信号或第二控制信号的检测选取模块；
    与所述整流模块以及所述检测选取模块相连接，用于根据所述第一控制信号驱动LED灯的限流模块；以及
    与所述整流模块以及所述检测选取模块相连接，用于根据所述第二控制信号驱动所述LED灯的恒流驱动模块。
  7. 如权利要求6所述的LED装置，其特征在于，所述整流模块包括整流桥，
    所述整流桥的第一交流输入端和第二交流输入端接所述电源信号，所述整流桥的第一直流输出端接地，所述整流桥的第二直流输出端为所述整流模块的输出端。
  8. 如权利要求6所述的LED装置，其特征在于，所述检测选取模块包括：
    选通开关、机械开关、反相器以及检测芯片；
    所述选通开关的受控端接所述整流模块，所述选通开关的第一选通端接所述恒流驱动模块，所述选通开关的第二选通端接所述机械开关的第一端，所述机械开关的第二端接地，所述检测芯片的输入端和第一输出端接所述限流模块，所述检测芯片的第二输出端接所述反相器的输入端，所述反相器的输出端接所述恒流驱动模块。
  9. 如权利要求6所述的LED装置，其特征在于，所述限流模块包括限流芯片，
    所述限流芯片的输入端和输出端接所述检测选取模块，所述限流芯片的受控端接所述整流模块，所述限流芯片的接地端接地。
  10. 如权利要求6所述的LED装置，其特征在于，所述恒流驱动模块包括：
    第一电容、第二电容、第一电感、第一二极管、第一开关管以及控制电路；
    所述第一电容的第一端与所述第一电感的第一端共接并与所述整流模块相连接，所述第一电容的第二端接地，所述第一电感的第二端与所述第一二极管的阳极以及所述第一开关管的输入端共接，所述控制电路的输入端接所述检测选取模块，所述控制电路的输出端接所述第一开关管的受控端，所述第一开关管的输出端接地，所述第一二极管的阴极接所述第二电容的第一端，所述第二电容的第二端接所述检测选取模块。
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