WO2014079137A1 - 一种led驱动控制器、照明装置及照明系统 - Google Patents

一种led驱动控制器、照明装置及照明系统 Download PDF

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Publication number
WO2014079137A1
WO2014079137A1 PCT/CN2013/000658 CN2013000658W WO2014079137A1 WO 2014079137 A1 WO2014079137 A1 WO 2014079137A1 CN 2013000658 W CN2013000658 W CN 2013000658W WO 2014079137 A1 WO2014079137 A1 WO 2014079137A1
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Prior art keywords
energy storage
circuit
triode
resistive element
energy
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English (en)
French (fr)
Inventor
李长华
陈裕斌
彭华焱
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Opple Lighting Co Ltd
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Opple Lighting Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits
    • H05B45/3725Switched mode power supply [SMPS]
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits
    • H05B45/3725Switched mode power supply [SMPS]
    • H05B45/375Switched mode power supply [SMPS] using buck topology
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits
    • H05B45/3725Switched mode power supply [SMPS]
    • H05B45/38Switched mode power supply [SMPS] using boost topology
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a drive controller, a lighting device, and a lighting system for a lighting device, and more particularly to an LED driving controller, a lighting device, and a lighting system.
  • the original high-frequency electronic transformer is designed for traditional lamps such as halogen lamps and has over-power protection.
  • an LED product using a high-frequency electronic transformer as a power source generally adopts a typical circuit as shown in Fig. 1, in which a capacitor C1 is used for storing energy.
  • the capacitor C1 can release the LED driver circuit to maintain normal operation.
  • the protection circuit of the high-frequency electronic transformer is often triggered to form a protective shutdown, causing the light source or the lamp to continuously flicker, or the electronic transformer is turned off to make the lamp or The light source stops working. This is especially true when multiple light sources or light source modules are connected in parallel with an electronic transformer.
  • the present invention provides an LED drive controller, and has the same A lighting device that drives a controller and a lighting system.
  • the LED drive controller effectively controls the charging current of the energy storage circuit within a reasonable range to prevent the electronic transformer from being turned off. In this way, the electronic compatibility of the lamp and the electronic transformer using the LED light source or the LED light source module can be greatly improved.
  • an LED driving controller including:
  • a rectifier for converting an input AC voltage into a DC voltage
  • a buffer connected to the rectifier for storing electrical energy and discharging electrical energy, the buffer comprising an energy storage circuit
  • An energy storage control circuit for controlling energy storage and energy release of the energy storage circuit
  • the drive module drives one or more light emitting diodes using the power of the rectifier output and the buffer.
  • the energy storage control circuit described in the LED drive controller comprises a resistive element, a triode and a diode, the resistive element being connected between the collector and the base of the triode, the emitter and the diode of the triode
  • the anode is connected to one end of the energy storage circuit for controlling the energy storage and energy release of the energy storage circuit.
  • the energy storage control circuit includes a resistive element and a diode, and the resistive element and the diode are connected in parallel, and the diode anode is connected to the energy storage circuit for controlling energy storage and energy release of the energy storage circuit.
  • the resistive component can limit the charging current of the capacitor, effectively avoiding the excessive charging current on the capacitor and causing the electronic transformer to enter the protection state.
  • the energy storage control circuit includes a first resistive element, a first triode, a second resistive element and a second triode, and the first resistive element is connected to the first three Between the collector and the base of the pole tube, the second resistive element is connected between the collector and the base of the second triode, and the emitter of the first triode is connected to the collector of the second triode And connected to the energy storage circuit.
  • the energy storage control circuit not only limits the instantaneous charging current of the capacitor, but also effectively prevents the electronic transformer from entering the protection state. Moreover, since the electric circuit and the discharge circuit generate less heat and have less pressure drop, the energy consumption is also reduced.
  • a lighting device comprising the LED driving controller according to any of the above embodiments.
  • the electronic compatibility between the lighting device using the LED replacement light source or the LED light source module and the high-frequency electronic transformer is improved, so that the lighting device can be matched with various high-frequency electronic transformers.
  • an illumination system comprising: at least one illumination device according to the second aspect of the invention.
  • An electronic transformer that steps down the input alternating current and supplies power to the at least one illumination device.
  • the energy storage circuit includes at least one capacitor.
  • the electronic transformer Since the charging and discharging of the energy storage system is controlled in the lighting system, the electronic transformer is prevented from entering the protection state due to over-power, causing the light source or the lamp to blink continuously, or the electronic transformer is turned off to stop the lamp or the light source.
  • FIG. 1 is a schematic diagram of a prior art LED driving controller
  • FIG. 2 is a schematic diagram of an LED driving controller according to an embodiment of the present invention.
  • FIG. 3 is a circuit diagram of a buffer in an LED drive controller in accordance with one embodiment of the present invention
  • FIG. 4 is a circuit diagram of a buffer in an LED drive controller in accordance with one embodiment of the present invention
  • FIG. 6 is a schematic diagram of a lighting system in accordance with another embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an LED driving controller according to an embodiment of the present invention
  • the drive controller includes a rectifier that rectifies the input AC signal and outputs a DC signal.
  • the buffer 1 is connected to a rectifier.
  • the buffer 1 includes a tank circuit 12 and an energy storage control circuit 11, wherein the tank circuit 12 performs charging and energy storage by using a DC output of the rectifier, and the energy storage control circuit 11 controls charging and storage of the tank circuit 12. Energy and discharge energy release process.
  • the energy storage control circuit 11 limits the charging current to prevent the instantaneous charging current from being excessively large, thereby causing the protective switching of the high-frequency transformer at the front end of the rectifier to be turned off, thereby preventing the lamp or the light source from stopping.
  • the drive module uses the DC signal from the rectifier and the release of the buffer to drive one or more diodes.
  • the driver module can be implemented as a boost converter, a buck converter, or a buck-boost converter.
  • the tank circuit 12 of the buffer 1 is a capacitor C1, but other tank circuits containing capacitors cannot be excluded.
  • the energy storage control circuit 11 includes a resistor R1, a transistor Q1, and a diode D1. Resistance R1 One end is connected to the collector of the transistor Q1 at point B, and the other end of the resistor R1 is connected to the base of the transistor Q1 at point A.
  • the anode of the diode D1 is connected to the emitter of the transistor Q1, and is connected to the E point at one end of the capacitor C1, and the other end of the capacitor C1 is connected to the negative output terminal of the rectifier.
  • the cathode of the diode D1 is connected to the collector of the transistor Q1 and is coupled to the zero point of the positive output terminal of the rectifier (the rectifier is omitted in FIG. 3).
  • the storage capacitor C1 is charged by the transistor Q1.
  • the transistor Q1 When charging, when the voltage at the 0 point is much higher than the voltage at the capacitor E, the current flows through the resistor R1. After the point A, the transistor Q1 is turned on, and the charging current flows through the points B and D. Capacitor C1 is charged; at this time, due to the base current control, the charging current between points B and D is controlled by the transistor Q1 amplification factor ⁇ and the base current ⁇ , which is P * I AD . During discharge, the current in capacitor C1 passes through the diode and powers the drive module.
  • the current I AD can be controlled, and the charging current can be controlled within a required range, thereby controlling the charging current, eliminating the purpose of flashing the LED replacement light source or the LED replacement module and protecting the electronic transformer. Since the charging circuit is controlled by a triode, the charging circuit generates less heat.
  • the buffer 1 includes a tank circuit 12 and an energy storage control circuit 11.
  • the tank circuit is a capacitor C1, but other tank circuits including capacitor elements cannot be excluded.
  • the energy storage control circuit includes a first resistor R1, a first transistor Q1, a second resistor R2, and a second diode Q2.
  • One end of the first resistor R1 is connected to the collector B end of the first transistor Q1, and the other end of the first resistor R1 is connected to the base A end of the first transistor Q1.
  • One end of the second resistor R2 is connected to the collector K terminal of the second transistor Q2, and the other end of the second resistor R2 is connected to the base J terminal of the second transistor Q2.
  • the emitter D terminal of the first transistor is connected to the collector K terminal of the second transistor Q2, and is connected to the E terminal of the capacitor C1, and the other end of the capacitor C1 is connected to the negative output terminal of the rectifier.
  • Collector B terminal and second triode of first transistor Q1 The emitter F terminal is connected and connected to the positive output 0 terminal of the rectifier (the rectifier is omitted in Fig. 4).
  • the charging of the capacitor C1 is performed by the first transistor Q1.
  • the voltage at the 0 point is much higher than the voltage at the capacitor terminal E, the current flows through the resistor through the point A, and the first transistor is turned on. Ql, the charging current flows through points B and D to charge capacitor C1.
  • the charging current between points B and D is controlled by the first triode amplification factor ⁇ and the base current I. AD is ⁇ * ⁇ ⁇ .
  • the first transistor Q1 is turned off and charging is completed.
  • the voltage at the end of the capacitor C1 is much higher than the voltage at point F.
  • the first transistor Q1 is in the off state, the second transistor Q2 is turned on, and the capacitor C1 is transmitted to the driving module.
  • I AD Through the first resistor R1, I AD can be controlled, and the charging current can be controlled within a required range, thereby controlling the charging current, eliminating the purpose of flashing the LED replacement light source or the LED replacement module and protecting the electronic transformer. Since the charging and discharging circuits are controlled by a triode, the charging and discharging circuits have less heat generation and low power consumption.
  • FIG. 5 is a circuit diagram of a buffer in another embodiment of an LED drive controller.
  • the buffer 1 includes a tank circuit 12 and an energy storage control circuit 11.
  • the tank circuit is a capacitor Cl, but other tank circuits including capacitors cannot be excluded.
  • the energy storage control circuit includes a resistor R1 and a diode D1.
  • One end of the resistor R1 is connected to the anode of the diode D1, and the anode of the diode D1 is connected to the end E of the capacitor C, and the other end of the capacitor C is connected to the negative output of the rectifier.
  • the other end A of the resistor R1 is connected to the cathode F terminal of the diode and is connected to the positive terminal output terminal 0 of the rectifier.
  • the current flows through the resistor R1 to charge the capacitor C1 through the points A and D.
  • the current in the capacitor passes through the diode D1 to the driving module. Transmission.
  • the charging current is controlled within a required range, thereby controlling the charging current, eliminating the LED replacement light source or the LED replacement module flickering and protecting the electronic transformer. the goal of.
  • the above LED driving controller limits the charging current of the energy storage circuit to a reasonable range, and can greatly improve the electronic compatibility of the LED replacement light source or the LED light source module using the high frequency electronic transformer as a power source, so that the product can be compared. Freely matching a variety of electronic transformers, when replacing the light source of existing luminaire products, can expand the range of applications applicable to the product and is less limited by the mismatch of the internal electronic transformers of existing luminaire products.
  • a lighting device the driving circuit of the lighting device comprising any of the above LED driving controllers.
  • FIG. 6 is a schematic illustration of an illumination system in accordance with another embodiment of the present invention, providing a lighting system.
  • the illumination system includes an electronic transformer, illumination device of at least one of the above-described LED drive controllers, and the electronic transformer steps down the input AC power and supplies power to the at least one illumination device.
  • the lighting system makes it possible to share a set of electronic transformers for lighting devices having LED replacement light sources or LED replacement light source modules.

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

Abstract

本发明涉及一种LED驱动控制器,包括:整流器,用于将输入的交流电压转化成直流电压;缓冲器,连接整流器,用于储存电能和释放电能,所述缓冲器包括储能电路,储能控制电路,用于控制所述储能电路的储能和释能;驱动模块,利用整流器输出和缓冲器的电能驱动一个或多个发光二极管。储能控制电路可以避免电子变压器由于过功率而进入保护状态,造成光源或灯具不断的闪烁,或者电子变压器关断使灯具或光源停止工作。提高釆用LED光源或LED光源模组的灯具与电子变压器的电子兼容性。

Description

一种 LED驱动控制器、 照明装置及照朋系统 技术领域
本发明涉及一种照明装置的驱动控制器、照明装置及照明系统, 特别是 涉及一种 LED驱动控制器、 照明装置和照明系统。
技术背景
作为替换类 LED产品,其被替换对象如卤素灯等很多都长期存在于该产 品的应用场所, 如果成套替换光源和电源系统, 则成本太高。 而原有的高频 电子变压器是专门为传统灯具如卤素灯设计, 具有过功率保护。
通常, 采用高频电子变压器作为电源的 LED产品, 通常采用如图 1的典 型电路, 其中, 电容 C1用于储存能量。 在电压高频变化并且在电源电压低 于驱动电路工作电压的时候, 电容 C1释能使 LED驱动电路维持正常工作。 但是这种电路在工作的时候, 如果电容的瞬间充电电流很大, 往往会触发高 频电子变压器的保护电路, 形成保护性关闭, 造成光源或灯具不断的闪烁, 或者电子变压器关断使灯具或光源停止工作。在多个光源或光源模组并联一 个电子变压器的时候, 该情况发生尤为突出。
这样, 往往给替换性光源或灯具模组的应用造成很大的困扰, 使得客户 必须选择特定的一种或几种电子变压器使用, 或者很难多套 LED光源或 LED 模组共用一套电子变压器使用。 另一方面, 如果必须多套 LED光源或 LED模 组并联使用, 往往需要釆用低压开关电源作为供电部件, 这样往往造成使用 成本大幅度的上升。 为了解决以上问题, 本发明提供了一种 LED驱动控制器、 以及具有这 种驱动控制器的照明装置以及照明系统。这种 LED驱动控制器有效地控制储 能电路的充电电流在合理的范围内, 防止电子变压器的关断。 这样一来, 能 够极大地提高采用 LED光源或 LED光源模组的灯具与电子变压器的电子兼容 性。
根据本发明的第一个方面的一个实施例, 提供了一种 LED驱动控制器, 包括:
整流器, 用于将输入的交流电压转化成直流电压;
缓冲器, 连接整流器, 用于储存电能和释放电能, 所述缓冲器包括 储能电路;
储能控制电路, 用于控制所述储能电路的储能和释能;
驱动模块, 利用整流器输出和缓冲器的电能驱动一个或多个发光二极 管。
根据本发明的一个实施例, LED驱动控制器中所述的储能控制电路包括 阻性元件, 三极管和二极管, 阻性元件连接在三极管的集电极和基极之间, 三极管的射极和二极管的阳极与储能电路一端连接,用于控制储能电路的储 能和释能。通过阻性元件和三极管的配合, 限制了流经三极管集电极和射极 之间的电流, 从而限制电容的瞬时充电电流, 有效避免了电子变压器进入保 护状态。
根据本发明的一个实施例, 所述的储能控制电路包括阻性元件和二极 管, 阻性元件和二极管并联, 且二极管阳极和储能电路相连, 用于控制储能 电路的储能和释能。 阻性元件可以限制电容的充电电流, 有效避免了电容上 瞬时充电电流过大而使电子变压器进入保护状态。 根据本发明的一个实施例, 所述的储能控制电路包括第一阻性元件, 第 一三极管, 第二阻性元件和第二三极管, 第一阻性元件连接于第一三极管 的集电极和基极之间, 第二阻性元件连接于第二三极管的集电极和基极之 间, 第一三极管的射极和第二三极管的集电极相连并与储能电路相连。储能 控制电路不仅限制电容的瞬时充电电流,有效避免了电子变压器进入保护状 态。 而且由于冲电回路和放电回路发热少、 压降少, 也降低了能耗。
根据本发明的第二个方面的一个实施例, 提供了一种照明装置, 包括 根据以上任何一个实施例所述的 LED驱动控制器。
通过对照明装置当中电容的冲放电控制, 提高采用 LED替换光源或 LED 光源模组的照明装置与高频电子变压器为电源之间电子兼容性,使照明装置 可以匹配多种高频电子变压器。
根据本发明的第三个方面的一个实施例, 提供了一种照明系统, 包括: 至少一个根据本发明的第二个方面所述的照明装置;
电子变压器,对输入的交流电进行降压并供电给所述的至少一个照明装 置。
以上任意一个实施例, 所述的储能电路包括至少一个电容。
由于照明系统中对储能系统的充放电进行了控制,避免了电子变压器由 于过功率而进入保护状态, 造成光源或灯具不断的闪烁, 或者电子变压器关 断使灯具或光源停止工作。
根据以下参考附图对本发明的描述,本发明的其他目标和效用将变得显 而易见, 并且读者可全面了解本发明。 图 1是现有技术中 LED驱动控制器示意图;
图 2是根据本发明一个实施例的 LED驱动控制器示意图;
图 3是根据本发明一个实施例的 LED驱动控制器中缓冲器的电路图; 图 4是根据本发明一个实施例的 LED驱动控制器中缓冲器的电路图; 图 5是根据本发明一个实施例的 LED驱动控制器中缓冲器的电路图; 图 6是根据本发明另一个实施例的照明系统的示意图;
在上述附图中, 相同附图标记指示相同、 相似或相应的元件或功能。
发明内容
下面结合附图对本发明作进一步详细描述。
图 2是根据本发明一个实施例的 LED驱动控制器示意图
在图 2中,驱动控制器包括整流器,整流器对输入的交流信号进行整流, 输出直流信号。 缓冲器 1连接整流器, 缓冲器 1包括储能电路 12和储能控 制电路 11, 其中, 储能电路 12利用整流器的直流输出进行充电储能, 储能 控制电路 11控制储能电路 12的充电储能和放电释能过程。在充电储能过程 中, 储能控制电路 11通过对充电电流限流, 来防止瞬时充电电流过大而导 致整流器前端的高频变压器的保护性关断, 防止灯具或光源停止工作。 驱动 模块利用整流器输出的直流信号和缓冲器的释能来驱动一个或多个二极管。 驱动模块可以被实现为升压 (boost ) 转换器、 降压 (buck) 转换器或升降 压 (buck-boost ) 转换器等。
图 3是根据本发明一个实施例的缓冲器的电路图。 参照图 3, 缓冲器 1 的储能电路 12是一个电容 C1 , 但也不能排除其它包含电容的储能电路。 储 能控制电路 11包括一个电阻 Rl、 一个三极管 Q1和一个二极管 Dl。 电阻 R1 的一端与三极管 Ql的集电极连接于 B点, 电阻 R1的另一端与三极管 Q1的 基极相连于 A点。二极管 D1的阳极与三极管 Q1的射极相连接,并与电容 C1 的一端相连于 E点, 电容 C1的另一端与整流器的负极输出端相连。 二极管 D1的阴极与三极管 Q1的集电极连接后联接于整流器(图 3中省略了整流器) 的正极输出端 0点。
储能电容 C1通过三极管 Q1进行充电, 充电时, 当 0点电压远高于电容 端 E点电压时, 电流流过电阻 Rl, 经过 A点, 开启三极管 Ql, 充电电流流 经 B、 D点, 对电容 C1充电; 此时, 由于受到基极电流控制, B、 D点间充电 电流受控于三极管 Q1放大倍数 β和基极电流 Ι , 为 P * IAD。 放电时, 电容 C1内的电流经过二极管, 向驱动模块输电。通过电阻 Rl, 可以控制电流 IAD, 进而把充电电流控制在需要范围内, 从而达到控制充电电流, 消除 LED替换 光源或 LED替换模组闪烁和保护电子变压器的目的。 由于充电回路采用了三 极管控制, 充电回路发热较小。
图 4是 LED驱动控制器中缓冲器的另一个实施例的电路图。 图 4中, 缓 冲器 1包括储能电路 12和储能控制电路 11, 储能电路是一个电容 Cl, 但也 不能排除其它包含电容元件的储能电路。储能控制电路包括第一电阻 Rl、第 一三极管 Ql、 第二电阻 R2和第二二极管 Q2。 第一电阻 R1的一端与第一三 极管 Q1的集电极 B端连接,第一电阻 R1的另一端与第一三极管 Q1的基极 A 端相连。 第二电阻 R2的一端与第二三极管 Q2的集电极 K端相连, 第二电阻 R2的另一端与第二三极管 Q2的基极 J端相连。 第一三极管的射极 D端和第 二三极管 Q2的集电极 K端相连接, 且接于电容 C1的 E端, 电容 C1的另一 端与整流器的负极输出端相连。 第一三极管 Q1的集电极 B端和第二三极管 的射极 F端连接后联接于整流器 (图 4中省略了整流器) 的正极输出 0端。 本实施例中, 电容 C1的充电是通过第一三极管 Q1进行的, 充电时, 0 点电压远高于电容端 E点电压时, 电流流过电阻经过 A点, 开启第一三极管 Ql, 充电电流流经 B、 D点, 对电容 C1充电; 此时, 由于收到基极电流控制, B、 D点间充电电流受控于第一三极管放大倍数 β和基极电流 IAD, 为 β * ΙΑϋ, 当 0点电压比 Ε点电压高得很小时, 此时第一三极管 Q1关闭, 充电完成。 放电时, 电容 C1一端 Ε点电压远高于 F点电压, 此时, 第一三极管 Q1处于 关闭状态, 第二三极管 Q2开启, 电容 C1向驱动模块输电。
通过第一电阻 Rl, 可以控制 IAD, 可以把充电电流控制在需要范围内, 从而达到控制充电电流, 消除 LED替换光源或 LED替换模组闪烁和保护电子 变压器的目的。 由于充电、 放电回路采用了三极管控制, 充电、 放电回路发 热较小, 功耗低。
图 5是 LED驱动控制器另一个实施例中缓冲器的电路图。 参照图 5, 缓 冲器 1包括储能电路 12和储能控制电路 11, 储能电路是一个电容 Cl, 但也 不能排除包含电容的其它的储能电路。 储能控制电路包括一个电阻 R1和一 个二极管 Dl。 电阻 R1的一端 A与二极管 D1的阳极连接,且二极管 D1的阳 极和电容 C一端 E连接, 电容 C的另一端连接于整流器的负极输出端。 电阻 R1的另一端 A和二极管的阴极 F端连接,并与整流器的正极输出端 0端相连。
本实施例中, 当充电时 0点电压远高于电容端 E点电压时, 电流流过电 阻 R1经过 A、 D点对电容 C1充电, 放电时, 电容内的电流经过二极管 Dl, 向驱动模块输电。通过电阻 Rl, 进而把充电电流控制在需要范围内, 从而达 到控制充电电流, 消除 LED替换光源或 LED替换模组闪烁和保护电子变压器 的目的。
上述的 LED驱动控制器把储能电路的充电电流限定在合理的范围内, 能 够极大地提高采用高频电子变压器为电源的 LED替换光源或 LED光源模组的 电子兼容性, 使得该产品可以比较自由的匹配多种电子变压器, 在做已有灯 具产品的光源替换时, 能够扩大产品适用的应用范围而较小的受限于已有灯 具产品内部电子变压器的不匹配性。
根据本发明的一个实施例, 提供了一种照明装置, 照明装置的驱动电路 包括上述任一种 LED驱动控制器。
图 6是根据本发明的另一实施例的照明系统的示意图,提供了一种照明 系统。 该照明系统包括电子变压器, 至少一个上述任一种 LED驱动控制器的 照明装置, 电子变压器对输入的交流电进行降压并供电给所述的至少一个照 明装置。
该照明系统为具有 LED替换型光源或 LED替换型光源模组的照明装置多 套共用一套电子变压器提供了可能。
对于本领域技术人员而言, 显然本发明不限于上述示范性实施例的细 节, 而且在不背离本发明的精神或基本特征的情况下,.能够以其他的具体形 式实现本发明。 因此, 无论从哪一点来看, 均应将实施例看作是示范性的, 而且是非限制性的, 本发明的范围由所附权利要求而不是上述说明限定, 因 此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发 明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此夕卜, 显然 "包括"一词不排除其他单元或步骤, 单数不排除复数。 权利要求中陈 述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第 ·, 第二等词语用来表示名称, 而并不表示任何特定的顺序。

Claims

权利要求
1. 一种 LED驱动控制器, 其特征在于, 包括:
整流器, 用于将输入的交流电压转化成直流电压;
缓冲器, 连接所述整流器, 用于储存电能和释放电能, 所述缓冲器包括 储能电路;
储能控制电路, 用于控制所述储能电路的储能和释能;
驱动模块,利用所述整流器输出和所述缓冲器的电能驱动一个或多个发光二 极管。
2. 根据权利要求 1所述的 LED驱动控制器, 其特征在于,
所述储能控制电路包括阻性元件 (Rl), 三极管 (Q1) 和二极管 (Dl), 所述阻性元件 (R1) 连接在三极管 (Q1) 的集电极和基极之间,
所述三极管(Q1)的射极和所述二极管(D1)的阳极与所述储能电路一端(E) 连接, 用于控制所述储能电路的储能和释能。
3. 根据权利要求 1所述的 LED驱动控制器, 其特征在于,
所述储能控制电路包括阻性元件 (R1) 和二极管 (Dl),
所述阻性元件(R1) 和所述二极管 (D1) 并联, 且所述二极管 (D1) 阳极和 所述储能电路相连, 用于控制所述储能电路的储能和释能。
4. 根据权利要求 1所述的 LED驱动控制器, 其特征在于,
所述储能控制电路包括第一阻性元件(Rl), 第一三极管(Ql), 第二阻性元 件 (R2) 和第二三极管 (Q2),
所述第一阻性元件(R1)连接于所述第一三极管(Q1)的集电极和基极之间, 所述第二阻性元件(R2)连接于所述第二三极管(Q2)的集电极和基极之间, 所述第一三极管(Q1) 的射极和第二三极管(Q2) 的集电极相连并与所述储 能电路相连。
5. 根据权利要求 1到 4所述任意一项的 LED驱动控制电路, 其特征在于, 所述储能电路包括至少一个电容 (Cl )。
6. 一种照明装置, 其特征在于,
包括根据权利要求 1到 4任一项所述的 LED驱动控制器。
7. 根据权利要求 6所述的照明装置, 其特征在于,
所述储能电路包括至少一个电容 (Cl )。
8. —种照明系统, 其特征在于, 包括:
至少一个根据权利要求 6所述的照明装置;
电子变压器, 对输入的交流电进行降压并供电给所述至少一个照明装置。
9. 根据权利要求 8的一种照明系统, 其特征在于,
所述储能电路包括至少一个电容 (Cl )。
PCT/CN2013/000658 2012-11-22 2013-06-04 一种led驱动控制器、照明装置及照明系统 Ceased WO2014079137A1 (zh)

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