WO2019080359A1 - 输入检测保护电路及 hid 灯用交流电子镇流器 - Google Patents

输入检测保护电路及 hid 灯用交流电子镇流器

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Publication number
WO2019080359A1
WO2019080359A1 PCT/CN2017/120349 CN2017120349W WO2019080359A1 WO 2019080359 A1 WO2019080359 A1 WO 2019080359A1 CN 2017120349 W CN2017120349 W CN 2017120349W WO 2019080359 A1 WO2019080359 A1 WO 2019080359A1
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WO
WIPO (PCT)
Prior art keywords
input
voltage
relay
protection circuit
detection protection
Prior art date
Application number
PCT/CN2017/120349
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English (en)
French (fr)
Inventor
邱明
金宇星
邓冠星
Original Assignee
苏州纽克斯电源技术股份有限公司
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Application filed by 苏州纽克斯电源技术股份有限公司 filed Critical 苏州纽克斯电源技术股份有限公司
Priority to US16/309,283 priority Critical patent/US11317490B2/en
Publication of WO2019080359A1 publication Critical patent/WO2019080359A1/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]
    • H05B45/30—Driver circuits
    • H05B45/355—Power factor correction [PFC]; Reactive power compensation
    • 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
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/24—Circuit arrangements for protecting against overvoltage
    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2923—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • 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

Definitions

  • the invention relates to the technical field of electronic ballasts, in particular to an input detection protection circuit and an AC electronic ballast for HID lamps.
  • HID lamp electronic ballast technology has been developed for many years, and its application technology is becoming more and more mature. Especially in recent applications in agriculture and street lamp energy-saving transformation, more and more applications have formed.
  • the product family has a wide range of products.
  • the common power range is 70-1000W, because the power distribution in different countries is different.
  • the commonly used voltages are 120V, 208V, 220V, 230, 240V, 277V, 347V, 380V, 400V, 480V, etc.
  • the above voltage specifications are not difficult to see that the electronic ballast power distribution environment is complex, and the installation must pay attention to the rated voltage range of the product and the environment of the power grid.
  • One type is misuse of two live wires during 3-phase 4-wire power distribution, and the actual input voltage is 1.7 times the nominal value.
  • a product with a nominal rated voltage of 230V has a voltage of up to 400 VAC when it is connected to the wrong line, which greatly exceeds the withstand voltage of the product.
  • the second type is that the grid instability exceeds the withstand voltage of the internal components, causing damage to the electrolysis and MOS tubes.
  • the third type is the zero-line phase-out resulting in three-phase unbalance, in which one phase voltage exceeds the input rating, causing damage to internal electrolytic capacitors and MOS.
  • the fourth type is the surge voltage at the moment of lightning strike and switch closure.
  • the fifth type is the rapid change of the large current when the input capacitor is charged, and the induced high voltage caused by the large decrease of the current.
  • the present invention proposes a further solution to the above problems.
  • the present invention is directed to an input detection protection circuit and an AC electronic ballast for an HID lamp to overcome the deficiencies in the prior art.
  • the technical solution of the present invention is:
  • An input detection protection circuit for input detection of an AC electronic ballast for an HID lamp comprising: a power input loop, an input voltage acquisition loop, a relay pull loop, a PFC circuit, and an MCU chip;
  • the power input loop performs a first voltage limiting on the input surge circuit, and performs a second voltage limiting on the residual voltage after the first voltage limiting, the input voltage collecting loop feeds back the input voltage to the MCU a chip, the relay pull-in loop is connected to a relay in the power input loop, and the MCU chip controls opening and closing of the PFC circuit according to a voltage value input by the input voltage acquisition loop, and passes the relay
  • the pull-in loop controls the pull-in and disconnection of the relay.
  • the power input circuit includes: a first varistor, a second varistor, a thermistor, and a relay, wherein the input surge voltage is limited by the first varistor After pressing, the second varistor and the thermistor are used to limit the voltage.
  • the power input circuit further includes a third varistor, and the third varistor is connected in parallel to both ends of the thermistor.
  • the input voltage collection loop includes: a first diode, a second diode, a first capacitor, a second capacitor, a first resistor, and a second resistor, wherein the One end of a diode and a second diode are connected to the power input loop, and the other end is connected to the MCU chip via the first capacitor, the second capacitor, the first resistor and the second resistor.
  • the MCU chip controls the pull-in of the relay through the relay pull-in loop, when the input voltage exceeds a safe range, The relay is disconnected.
  • the input voltage collection circuit includes: a third resistor, a fourth resistor, and a third capacitor, one end of the third capacitor is connected to the PFC circuit, and the other end is A third resistor and a third capacitor are coupled to the MCU chip.
  • the MCU chip controls the PFC circuit to be turned on, and when the input voltage exceeds a safe range, the MCU chip controls the PFC circuit to be turned off. .
  • the relay suction circuit includes a triode, a fifth resistor, a sixth resistor, and a fourth capacitor, and a collector of the triode is connected to the relay, and a collector of the triode And the emitter is electrically connected to the MCU chip via the fifth resistor, the sixth resistor, and the fourth capacitor.
  • the input detection protection circuit further includes a power supply module that supplies power to the relay and the MCU chip.
  • An AC electronic ballast for an HID lamp comprising an input detection protection circuit as described above.
  • the invention has the beneficial effects that the input detection protection circuit of the invention can solve various inputs such as grid input phase drop, wrong wiring during installation, high surge voltage at switching instant, continuous lightning pulse, and the like.
  • Extremely high voltage abnormal protection The input detection protection circuit of the invention collects the voltage of the capacitor of the latter stage, and effectively reduces the inrush current and the impact according to the internal setting of the suction relay, and simultaneously monitors the input voltage, and can also provide the voltage at the extremely high and low voltage. Protection, the relay is disconnected when an abnormality occurs.
  • the MCU standby current indication abnormality is provided by the PTC.
  • FIG. 1 is a circuit diagram of a specific embodiment of an input detection protection circuit of the present invention.
  • the input detection protection circuit of the present invention is used for input detection of an AC electronic ballast for HID lamps, which includes: a power input circuit 1, an input voltage collection circuit 2, a relay suction circuit 3, and a PFC circuit 4. , MCU chip 5.
  • the power input circuit 1 is configured to perform a first voltage limiting on the input surge circuit, and perform a second voltage limiting on the residual voltage after the first voltage limiting.
  • the power input circuit 1 includes: a first varistor ZR1, a second varistor ZR2, a thermistor PTC, and a relay K1.
  • the input surge voltage is limited by the first varistor ZR1.
  • the second varistor ZR2 and the thermistor PTC are limited in voltage.
  • the power input circuit 1 further includes a third varistor ZR3, the third varistor ZR3 is connected in parallel to both ends of the thermistor PTC, and the third varistor ZR3 is used for thermal The resistor PTC protects.
  • the thermistor PTC voltage limiting and the second varistor ZR2 are limited in the circuit, the thermistor PTC exhibits a high resistance, and the voltage is controlled by the second varistor ZR2 at a safe value, and the thermal The resistance PTC withstand voltage is above 300VAC, and it exhibits high resistance when overcurrent.
  • the input stage voltage is higher than the limit voltage of the second varistor ZR2, the remaining voltage is applied to the thermistor PTC to enhance the latter stage. protection.
  • the input phase is dropped, the input voltage is 1.73 times of the rated voltage.
  • the rectified voltage is 550-600V
  • the electrolytic capacitor in the latter stage is generally 450-500V DC electrolysis.
  • the electrolytic overvoltage damage may occur, so the power input circuit 1 can effectively prevent device damage.
  • the input voltage acquisition loop 2 is used to feed back an input voltage to the MCU chip 5.
  • the input voltage collection circuit 2 includes: a first diode D1, a second diode D2, a first capacitor C6, a second capacitor C7, a first resistor R3, and a second resistor R4, wherein One ends of the first diode D1 and the second diode D2 are connected to the power input circuit 1, and the other end is connected to the first capacitor C6, the second capacitor C7, the first resistor R3 and the second resistor R4 to The MCU chip 5.
  • the MCU chip 5 determines whether the relay K1 is sucked according to the value of the input voltage. If the relay K1 is not sucked when the circuit safety value is exceeded, the voltage is limited by the second varistor ZR2 and the thermistor PTC within a safe range. When the input voltage falls within a safe range, the MCU chip 5 calculates a reasonable delay pull-in time according to the voltage on the electrolytic capacitor, and controls the surge current to the lowest level. If the input voltage is too high, the relay K1 is pulled in, and the capacitor C5 is over-voltage and damaged. If the pull-in time is early, the voltage on the capacitor C5 is still at a lower value, and the surge current will be very large at the moment of pick-up, which will not function as a soft start.
  • the input voltage collecting circuit 2 further includes: a third resistor R6, a fourth resistor R7, and a third capacitor C9, wherein one end of the third capacitor C9 is connected to the PFC circuit 4, and the other end is The third resistor R6 and the third capacitor C9 are connected to the MCU chip 5.
  • the MCU chip 5 controls the PFC circuit 4 to be turned on, and when the input voltage is out of the safe range, the MCU chip 5 controls the PFC circuit 4 to be turned off. Thereby, the power consumption is reduced to a minimum, and the standby power consumption is less than 1W.
  • the relay K1 pull-in circuit 3 is connected to a relay K1 in the power supply input circuit 1 for controlling the pull-in of the relay K1 under the control of the MCU chip 5.
  • the relay K1 pull-in circuit 3 includes a transistor Q2, a fifth resistor R1, a sixth resistor R2, and a fourth capacitor C8, wherein the collector of the transistor Q2 is connected to the relay K1, and the transistor Q2
  • the collector and the emitter are electrically connected to the MCU chip 5 via the fifth resistor R1, the sixth resistor R2, and the fourth capacitor C8.
  • the MCU chip 5 is configured to control the opening and closing of the PFC circuit 4 according to the voltage value input by the input voltage collecting circuit 2, and control the suction and the closing of the relay K1 through the closing circuit 3 of the relay K1. disconnect.
  • the MCU chip 5 has a first input pin INAC and a second input pin INDC connected to the input voltage collecting circuit 2, and has a phase of the pull loop 3 and the PFC circuit 4 with the relay K1.
  • the first output pin K1ON and the second output pin PFCOFF are connected.
  • the first input pin INAC detects the input voltage, performs AD calculation and judgment, and then draws a signal to the relay K1 through the first output pin K1ON, and disconnects the relay K1 when the abnormality occurs, and the current only passes when the relay K1 is turned off.
  • the thermistor PTC is provided to the rear stage power module to ensure standby.
  • the timing of the pull-in of the relay K1 has a good suppression effect on the input surge current, and the electrolytic charge is detected on the 5th leg of the MCU chip, and the relay K1 is sucked when a certain condition is satisfied, thereby not only reducing the duration of the surge current, but also It can reduce the peak value of the inrush current, reduce the switching capacity during power distribution, and reduce the surge interference of the power grid.
  • the PFCOFF output signal of the second output pin turns off the PFC circuit output and the subsequent stage circuit to minimize power consumption and meet the requirement that the standby power consumption is less than 1W.
  • the model number of the MCU chip 5 is PIC16F1716-I/SS.
  • the MCU chip 5 also has an LED indicating interface, which can perform an effective detection indication, by setting a minimum and maximum voltage protection voltage, a safe working voltage, and indicating overvoltage, phase loss, low voltage, lightning strike, etc. according to different blinking.
  • the state is convenient for customer maintenance and reduces the risk of electric shock.
  • the input detection protection circuit further includes a power module 6 that supplies power to the relay K1 and the MCU chip 5.
  • the high-voltage electrolytic capacitor is not used on the power module 6, and the stability thereof is greatly increased.
  • the power module 6 can output voltages of 15V and 5V to supply the operating voltage to the relay K1 and the chip.
  • the present invention also provides an AC electronic ballast for an HID lamp comprising the input detection protection circuit as described above.
  • the input detection protection circuit of the present invention can solve the abnormal protection of various input voltages such as the power system input phase drop, the wrong line during installation, the high surge voltage at the switch moment, and the continuous lightning pulse.
  • the input detection protection circuit of the invention collects the voltage of the capacitor of the latter stage, and effectively reduces the inrush current and the impact according to the internal setting of the suction relay, and simultaneously monitors the input voltage, and can also provide the voltage at the extremely high and low voltage. Protection, the relay is disconnected when an abnormality occurs.
  • the MCU standby current indication abnormality is provided by the PTC.

Abstract

本发明提供一种输入检测保护电路及HID灯用交流电子镇流器，其中，输入检测保护电路包括：电源输入回路、输入电压采集回路、继电器吸合回路、PFC电路、MCU芯片。本发明的输入检测保护电路能够解决电网输入掉相，安装时接错线，开关瞬间的高浪涌电压，连续的雷击脉冲等各种输入电压极高的异常保护。本发明输入检测保护电路采集后级电容充电的电压，根据内部的设定吸合继电器，有效的降低浪涌电流和冲击，同时对输入电压进行监测，在电压极高和极低时也能提供保护，在发生异常时断开继电器由PTC提供MCU待机电流指示异常。

Description

输入检测保护电路及HID灯用交流电子镇流器 技术领域
本发明涉及电子镇流器技术领域，尤其涉及一种输入检测保护电路及HID灯用交流电子镇流器。
背景技术
HID灯电子镇流器技术发展了多年，其应用技术也越来越成熟，特别是近来在农业上的应用和路灯节能改造上的应用越来越多，市场的多样化需求差异形成了庞大的产品家族，其产品种类繁多，常见功率范围在70-1000W，因为各个国家的电网配电不一样，常用的电压有120V，208V，220V，230，240V，277V，347V，380V，400V，480V等，以上电压规格不难看出电子镇流器配电环境复杂，安装时必须关注产品额定电压范围和电网的环境。
进一步了解使用环境，分为家庭单一电压使用，中等规模发动机供电，大规模工业应用时电网配电，因此电网电压环境复杂，在应用时监测输入浪涌电压达到几千伏，电网波动和不稳定达到30％以上，远远超过产品的设计承受电压，如此恶劣的电网环境导致故障的主要原因，根据失效分析造成大量的损坏原因有如下几种：
一类是3相4线配电时误用两根火线，实际的输入电压为标称值的1.7倍。例如标称额定电压230V的产品在接错线时电压高达400VAC，大大的超过了产品的承受电压。第二类为电网不稳定超过内部器件的承受耐压，造成电解和MOS管损坏。第三类是零线掉相导致三相不平衡，其中有一相电压超过输入的额定值，导致内部电解电容和MOS等损坏。第四类是雷击和开关闭合瞬间的浪涌电压，第五类是输入电容充电时的大电流快速变化，在电流由大减少时造成的感应高电压。
在长期的使用跟踪后发现，输入的电压异常造成的损坏占所有故障率的60％以上，在家庭环境下使用电压单一，失效率明显的低于工业的应用。使用发动机的环境故障率明显高于使用电网的环境。在开关瞬间损坏的概率大于正常工作 时，雷雨天气的失效率高于晴朗天气。
因此，针对上述问题，本发明提出进一步的解决方案。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明旨在提供一种输入检测保护电路及HID灯用交流电子镇流器，以克服现有技术中存在的不足。
为解决上述技术问题，本发明的技术方案是：
一种输入检测保护电路，其用于HID灯用交流电子镇流器的输入检测，其包括：电源输入回路、输入电压采集回路、继电器吸合回路、PFC电路、MCU芯片；
所述电源输入回路对输入的浪涌电路进行第一次限压，并对第一次限压后的残压进行第二次限压，所述输入电压采集回路将输入电压反馈至所述MCU芯片，所述继电器吸合回路与所述电源输入回路中的继电器连接，所述MCU芯片根据所述输入电压采集回路输入的电压值，控制所述PFC电路的开启和关闭，并通过所述继电器吸合回路控制所述继电器的吸合和断开。
作为本发明的输入检测保护电路的改进，所述电源输入回路包括：第一压敏电阻、第二压敏电阻、热敏电阻以及继电器，输入的浪涌电压经所述第一压敏电阻限压后，再经所述第二压敏电阻和热敏电阻限压。
作为本发明的输入检测保护电路的改进，所述电源输入回路还包括第三压敏电阻，所述第三压敏电阻并联于所述热敏电阻的两端。
作为本发明的输入检测保护电路的改进，所述输入电压采集回路包括：第一二极管、第二二极管、第一电容、第二电容、第一电阻和第二电阻，所述第一二极管和第二二极管的一端连接至所述电源输入回路，另一端经所述第一电容、第二电容、第一电阻和第二电阻连接至所述MCU芯片。
作为本发明的输入检测保护电路的改进，当输入电压位于安全范围内时，所述MCU芯片通过所述继电器吸合回路控制所述继电器的吸合，当输入电压超出安 全范围内时，所述继电器断开。
作为本发明的输入检测保护电路的改进，所述输入电压采集回路包括：第三电阻、第四电阻、第三电容，所述第三电容的一端连接至所述PFC电路，另一端经所述第三电阻和第三电容连接至所述MCU芯片。
作为本发明的输入检测保护电路的改进，当输入电压位于安全范围内时，所述MCU芯片控制所述PFC电路开启，当输入电压超出安全范围内时，所述MCU芯片控制所述PFC电路关闭。
作为本发明的输入检测保护电路的改进，所述继电器吸合回路包括三极管、第五电阻、第六电阻、第四电容，所述三极管的集电极与所述继电器连接，所述三极管的集电极和发射极经所述第五电阻、第六电阻、第四电容与所述MCU芯片电连接。
作为本发明的输入检测保护电路的改进，所述输入检测保护电路还包括电源模块，所述电源模块为所述继电器和MCU芯片供电。
为解决上述技术问题，本发明的另一技术方案是：
一种HID灯用交流电子镇流器，其包括如上所述的输入检测保护电路。
发明的有益效果
有益效果
与现有技术相比，本发明的有益效果是：本发明的输入检测保护电路能够解决电网输入掉相，安装时接错线，开关瞬间的高浪涌电压，连续的雷击脉冲等各种输入电压极高的异常保护。本发明输入检测保护电路采集后级电容充电的电压，根据内部的设定吸合继电器，有效的降低浪涌电流和冲击，同时对输入电压进行监测，在电压极高和极低时也能提供保护，在发生异常时断开继电器由PTC提供MCU待机电流指示异常。
对附图的简要说明
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不 付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的输入检测保护电路一具体实施方式的电路图。
实施该发明的最佳实施例
本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
如图1所示，本发明的输入检测保护电路用于HID灯用交流电子镇流器的输入检测，其包括：电源输入回路1、输入电压采集回路2、继电器吸合回路3、PFC电路4、MCU芯片5。
所述电源输入回路1用于对输入的浪涌电路进行第一次限压，并对第一次限压后的残压进行第二次限压。具体地，所述电源输入回路1包括：第一压敏电阻ZR1、第二压敏电阻ZR2、热敏电阻PTC以及继电器K1，输入的浪涌电压经所述第一压敏电阻ZR1限压后，再经所述第二压敏电阻ZR2和热敏电阻PTC限压。进一步地，所述电源输入回路1还包括第三压敏电阻ZR3，所述第三压敏电阻ZR3并联于所述热敏电阻PTC的两端，该第三压敏电阻ZR3用于对热敏电阻PTC进行保护。
从而，当输入电压超高时，电路中热敏电阻PTC限压和第二压敏电阻ZR2进行限制，热敏电阻PTC呈现高阻，电压被第二压敏电阻ZR2控制在安全值，热敏电阻PTC耐压能力在300VAC以上，且过流时呈现高阻特性，输入级电压高于第二压敏电阻ZR2的限制电压时，剩余的电压加到热敏电阻PTC上实现对后级的加强保护。当输入掉相时，输入电压是额定电压的1.73倍，以230V为例，当掉相最严酷时，整流后的电压为550-600V，后级的电解电容一般为450-500V直流电解，所以会造成电解过压损坏，因此所述电源输入回路1可以有效的防止器件损坏。
所述输入电压采集回路2用于将输入电压反馈至所述MCU芯片5。具体地，所述输入电压采集回路2包括：第一二极管D1、第二二极管D2、第一电容C6、第二电容C7、第一电阻R3和第二电阻R4，其中，所述第一二极管D1和第二二极管 D2的一端连接至所述电源输入回路1，另一端经所述第一电容C6、第二电容C7、第一电阻R3和第二电阻R4连接至所述MCU芯片5。
此时，所述MCU芯片5根据输入电压的值判断继电器K1是否吸合，如果超过电路安全值时不吸合继电器K1，电压被第二压敏电阻ZR2和热敏电阻PTC限制在安全范围内，当输入电压降到安全范围内，所述MCU芯片5根据电解电容上的电压计算合理的延时吸合时间，将浪涌电流控制在最低的水平。如果输入电压过高时继电器K1吸合，电容C5会过压而损坏。如果吸合时间早，此时电容C5上的电压还在较低的值，吸合瞬间浪涌电流会非常大，起不到软启动的作用。
进一步地，所述输入电压采集回路2还包括：第三电阻R6、第四电阻R7、第三电容C9，其中，所述第三电容C9的一端连接至所述PFC电路4，另一端经所述第三电阻R6和第三电容C9连接至所述MCU芯片5。
此时，当输入电压位于安全范围内时，所述MCU芯片5控制所述PFC电路4开启，当输入电压超出安全范围内时，所述MCU芯片5控制所述PFC电路4关闭。从而，将功耗降低到最小，满足待机功耗小于1W的要求。
所述继电器K1吸合回路3与所述电源输入回路1中的继电器K1连接，其用于在所述MCU芯片5的控制下控制所述继电器K1的吸合。具体地，所述继电器K1吸合回路3包括三极管Q2、第五电阻R1、第六电阻R2、第四电容C8，其中，所述三极管Q2的集电极与所述继电器K1连接，所述三极管Q2的集电极和发射极经所述第五电阻R1、第六电阻R2、第四电容C8与所述MCU芯片5电连接。
所述MCU芯片5用于根据所述输入电压采集回路2输入的电压值，控制所述PFC电路4的开启和关闭，并通过所述继电器K1吸合回路3控制所述继电器K1的吸合和断开。
具体地，所述MCU芯片5具有与所述输入电压采集回路2相连接的第一输入引脚INAC和第二输入引脚INDC，还具有与所述继电器K1吸合回路3和PFC电路4相连接的第一输出引脚K1ON和第二输出引脚PFCOFF。
从而，第一输入引脚INAC检测输入的电压，进行AD计算和判断后通过第一输出引脚K1ON给继电器K1吸合信号，在异常时断开继电器K1，当继电器K1断开时电流仅仅通过热敏电阻PTC提供给后级电源模块保障待机。从而，继电器K1 吸合的时序对输入冲击电流有很好的抑制作用，在所述MCU芯片5脚检测电解充电，满足一定条件时吸合继电器K1，不仅可以减少浪涌电流的持续时间，还可以降低浪涌电流的峰值，减少配电时的开关容量，降低电网的浪涌干扰。同理，第二输出引脚PFCOFF输出信号关闭PFC电路输出和后级电路，以将功耗降低到最小，满足待机功耗小于1W的要求。在一个实施方式中，所述MCU芯片5的型号为PIC16F1716-I/SS。
此外，所述MCU芯片5还具有LED指示接口，其可以进行有效的检测指示，通过设置最低和最高电压的保护电压，安全工作电压，根据闪烁的不同指示过压、掉相、低压、雷击等状态，方便客户维修，减少触电隐患。
所述输入检测保护电路还包括电源模块6，所述电源模块6为所述继电器K1和MCU芯片5供电。其中，在所述电源模块6上不使用高压电解电容，其稳定性得到大幅增加，所述电源模块6可以输出15V和5V的电压为继电器K1和芯片提供工作电压。
基于如上所述的输入检测保护电路，本发明还提供一种HID灯用交流电子镇流器，其包括如上所述的输入检测保护电路。
综上所述，本发明的输入检测保护电路能够解决电网输入掉相，安装时接错线，开关瞬间的高浪涌电压，连续的雷击脉冲等各种输入电压极高的异常保护。本发明输入检测保护电路采集后级电容充电的电压，根据内部的设定吸合继电器，有效的降低浪涌电流和冲击，同时对输入电压进行监测，在电压极高和极低时也能提供保护，在发生异常时断开继电器由PTC提供MCU待机电流指示异常。
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。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式 仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (10)

  1. 一种输入检测保护电路，其用于HID灯用交流电子镇流器的输入检测，其特征在于，所述输入检测保护电路包括：电源输入回路、输入电压采集回路、继电器吸合回路、PFC电路、MCU芯片；
    所述电源输入回路对输入的浪涌电路进行第一次限压，并对第一次限压后的残压进行第二次限压，所述输入电压采集回路将输入电压反馈至所述MCU芯片，所述继电器吸合回路与所述电源输入回路中的继电器连接，所述MCU芯片根据所述输入电压采集回路输入的电压值，控制所述PFC电路的开启和关闭，并通过所述继电器吸合回路控制所述继电器的吸合和断开。
  2. 根据权利要求1所述的输入检测保护电路，其特征在于，所述电源输入回路包括：第一压敏电阻、第二压敏电阻、热敏电阻以及继电器，输入的浪涌电压经所述第一压敏电阻限压后，再经所述第二压敏电阻和热敏电阻限压。
  3. 根据权利要求2所述的输入检测保护电路，其特征在于，所述电源输入回路还包括第三压敏电阻，所述第三压敏电阻并联于所述热敏电阻的两端。
  4. 根据权利要求1所述的输入检测保护电路，其特征在于，所述输入电压采集回路包括：第一二极管、第二二极管、第一电容、第二电容、第一电阻和第二电阻，所述第一二极管和第二二极管的一端连接至所述电源输入回路，另一端经所述第一电容、第二电容、第一电阻和第二电阻连接至所述MCU芯片。
  5. 根据权利要求1或4所述的输入检测保护电路，其特征在于，当输入电压位于安全范围内时，所述MCU芯片通过所述继电器吸合回路控制所述继电器的吸合，当输入电压超出安全范围内时，所述继电器断开。
  6. 根据权利要求1所述的输入检测保护电路，其特征在于，所述输入电压采集回路包括：第三电阻、第四电阻、第三电容，所述第三 电容的一端连接至所述PFC电路，另一端经所述第三电阻和第三电容连接至所述MCU芯片。
  7. 根据权利要求1或5所述的输入检测保护电路，其特征在于，当输入电压位于安全范围内时，所述MCU芯片控制所述PFC电路开启，当输入电压超出安全范围内时，所述MCU芯片控制所述PFC电路关闭。
  8. 根据权利要求1所述的输入检测保护电路，其特征在于，所述继电器吸合回路包括三极管、第五电阻、第六电阻、第四电容，所述三极管的集电极与所述继电器连接，所述三极管的集电极和发射极经所述第五电阻、第六电阻、第四电容与所述MCU芯片电连接。
  9. 根据权利要求1所述的输入检测保护电路，其特征在于，所述输入检测保护电路还包括电源模块，所述电源模块为所述继电器和MCU芯片供电。
  10. 一种HID灯用交流电子镇流器，其特征在于，所述HID灯用交流电子镇流器包括如权利要求1-9任一项所述的输入检测保护电路。
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564486B (zh) * 2019-09-26 2022-04-22 海信视像科技股份有限公司 显示装置
CN111542151B (zh) * 2020-06-17 2022-04-19 东莞职业技术学院 一种灯具控制电路及其灯具
CN111885763B (zh) * 2020-07-31 2023-11-17 宁波方太厨具有限公司 一种小功率脉冲氙灯控制方法和控制电路
CN116582976B (zh) * 2023-07-07 2023-09-15 广东东菱电源科技有限公司 一种输入防浪涌及低待机功耗电路

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349707A1 (en) * 1988-07-06 1990-01-10 Wide-Lite International Corporation Bi-level ballast circuit for operating hid lamps
CN2688016Y (zh) * 2004-02-17 2005-03-23 楼方禄 大功率气体放电灯用电子控制器
CN201171242Y (zh) * 2008-02-28 2008-12-24 山东乐航节能科技股份有限公司 一种气体放电灯节能装置
CN201674714U (zh) * 2010-05-25 2010-12-15 合肥大明电子科技有限公司 Mcu智能保护的电子镇流器
CN103427618A (zh) * 2013-06-24 2013-12-04 深圳市英威腾电气股份有限公司 一种软启动控制电路

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100388587C (zh) * 2002-11-15 2008-05-14 中兴通讯股份有限公司 一种实现在线式交流输入高压保护的电路
CN100426614C (zh) * 2004-07-29 2008-10-15 中兴通讯股份有限公司 交流电源输入高压保护装置
CN201048272Y (zh) * 2007-03-26 2008-04-16 常州东方铁路器材有限公司 自复式过流保护器
EP2360820B1 (en) * 2009-12-31 2018-03-28 Nxp B.V. Surge protection circuit
US8723428B2 (en) * 2011-11-17 2014-05-13 General Electric Company LED power source with over-voltage protection
CN102710152B (zh) * 2012-06-06 2015-12-02 矽力杰半导体技术(杭州)有限公司 一种高效率、快速响应的交流-直流电压转换电路
CN102780134B (zh) * 2012-08-01 2014-09-10 福建侨汇电子科技有限公司 一种限功率电源插座
US9484771B2 (en) * 2013-11-01 2016-11-01 Juniper Networks, Inc. Uninterruptable power supply for device having power supply modules with internal automatic transfer switches
US20150311805A1 (en) * 2014-04-24 2015-10-29 Ricoh Company, Ltd. Power supply device, image forming apparatus, laser device, laser ignition device, and electronic device
US9820351B1 (en) * 2015-04-09 2017-11-14 Universal Lighting Technologies, Inc. Circuit and method for abnormal fault testing in an LED driver
US9337744B1 (en) * 2015-04-30 2016-05-10 Ixys Corporation Efficient inrush current control in power factor corrected AC-to-DC converter
CN205070777U (zh) * 2015-11-12 2016-03-02 温州亿科电子有限公司 开关电源电路
CN207720488U (zh) * 2017-10-25 2018-08-10 苏州纽克斯电源技术股份有限公司 输入检测保护电路及hid灯用交流电子镇流器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349707A1 (en) * 1988-07-06 1990-01-10 Wide-Lite International Corporation Bi-level ballast circuit for operating hid lamps
CN2688016Y (zh) * 2004-02-17 2005-03-23 楼方禄 大功率气体放电灯用电子控制器
CN201171242Y (zh) * 2008-02-28 2008-12-24 山东乐航节能科技股份有限公司 一种气体放电灯节能装置
CN201674714U (zh) * 2010-05-25 2010-12-15 合肥大明电子科技有限公司 Mcu智能保护的电子镇流器
CN103427618A (zh) * 2013-06-24 2013-12-04 深圳市英威腾电气股份有限公司 一种软启动控制电路

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