CN110896279B - 一种led应急电源恒功率输出电路及工作方法 - Google Patents

一种led应急电源恒功率输出电路及工作方法 Download PDF

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CN110896279B
CN110896279B CN201910967667.1A CN201910967667A CN110896279B CN 110896279 B CN110896279 B CN 110896279B CN 201910967667 A CN201910967667 A CN 201910967667A CN 110896279 B CN110896279 B CN 110896279B
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贺庆会
马晶
张安辉
龚灼焱
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Shenzhen Weipeng Shiji Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements

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Abstract

本发明公开了一种LED应急电源恒功率输出电路及工作方法，其中的一种LED应急电源恒功率输出电路，包括DC‑DC逆变电路、MCU控制电路、电流电压采样电路、恒定电压电路；所述DC‑DC逆变电路将低压直流电逆变成高压交流；所述电压电流采样电路为单片机提供可检测的电压信号，供单片机检测计算用；所述MCU控制电路用于检测电压，电流值，并计算，输出基准信号给恒定电压电路；所述恒定电压电路接收MCU的基准信号，并将LED驱动电源调光电压进行恒定。本发明接线简单，可以电工现场接线；适合旧灯具改造，改造时不需要修改原灯具的安装方式。

Description

一种LED应急电源恒功率输出电路及工作方法
技术领域
本发明涉及LED电源，具体涉及一种LED应急电源恒功率输出电路及工作方法。
背景技术
目前市场的LED应急电源恒功率输出均是连接在驱动与LED灯板之间，此类LED应急驱动只能在工厂完成接线，损坏后，只能整灯更换。接线复杂，更换成本高。
而连接在输入电源与电网之间的LED应急电源输出功率必须大于灯具的输入功率。
发明内容
本发明针对上述问题，提供了一种LED应急电源恒功率输出电路及工作方法。
1.本发明采用的技术方案为：一种LED应急电源恒功率输出电路，其特征在于，包括DC-DC逆变电路、MCU控制电路、电流电压采样电路、恒定电压电路；
所述DC-DC逆变电路将低压直流电逆变成高压交流；
所述电压电流采样电路为单片机提供可检测的电压信号，供单片机检测计算用；
所述MCU控制电路用于检测电压，电流值，并计算，输出基准信号给恒定电压电路；
所述恒定电压电路接收MCU控制电路的基准信号，并将LED应急电源调光电压进行恒定；
所述LED应急电源恒功率输出电路的工作方法包括：
当VCC接通，逆变控制电路开始工作，变压器第一输出端VO1与变压器第二输出端VO2输出120V或220V交流电压，MCU控制电路基准输出引脚输出低电平，并慢慢增加占空比，直至LED应急电源启动；在占空比增加的同时，电压检测引脚与电流检测引脚开始检测电压与电流，并将检测到的结果相乘后与预设定功率进行比较，当检测到的结果低于预设定功率时，继续增加占空比，使LED应急电源消耗功率加大；当检测到的结果高于预设定功率时，减小占空比，使LED应急电源消耗功率减小；
电阻R6、R7为分压电阻，电阻R6和电阻R7串联后，一端分别电性连接电源VCC、MCU控制电路及DC-DC逆变电路，另一端连接地，MCU控制电路的电压检测端连接于电阻R6和电阻R7之间；将VCC电压降到MCU控制电路可检测范围；
电阻R5为电流采样电阻，U6B为运算放大器，电阻R5跨接于运算放大器U6B的同相端和地之间；电阻R8、R9与运算放大器U6B组成运算放大电路，将电阻R5上产生的电压放大，供MCU控制电路检测；
电阻R10、R11，电容C3、C2组成滤波电路，将MCU控制电路基准输出引脚输出的PWM信号转为稳定的直流信号；运算放大器U6A,电阻R12、R13组成恒定电压电路；阻R14为恒定电压电路提供上拉电流，电阻R14一端通过电阻R13连接运算放大器U6A的同相端，另一端连接电源VCC。
本发明的优点：
本发明的LED应急电源恒功率输出电路只要是带有调光接口的LED灯具，不管功率大于还是小于LED应急电源输出功率，均可以正常应急；接线简单，可以电工现场接线；适合旧灯具改造，改造时不需要修改原灯具的安装方式。
除了上面所描述的目的、特征和优点之外，本发明还有其它的目的、特征和优点。下面将参照图，对本发明作进一步详细的说明。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。
图1是本发明的LED应急电源恒功率输出电路的原理图；
图2是本发明的LED应急电源恒功率输出电路的方法流程图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明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发明，并不用于限定本发明。
2.参考图1，如图1所示，一种LED应急电源恒功率输出电路，其特征在于，包括DC-DC逆变
电路、MCU控制电路、电流电压采样电路、恒定电压电路；
所述DC-DC逆变电路将低压直流电逆变成高压交流；
所述电压电流采样电路为单片机提供可检测的电压信号，供单片机检测计算用；
所述MCU控制电路用于检测电压，电流值，并计算，输出基准信号给恒定电压电路；
所述恒定电压电路接收MCU控制电路的基准信号，并将LED应急电源调光电压进行恒定；
MCU为MSP430单片机。
参考图2，如图2所示，所述LED应急电源恒功率输出电路的工作方法包括：
当VCC接通，逆变控制电路开始工作，变压器第一输出端VO1与变压器第二输出端VO2输出120V或220V交流电压，MCU控制电路基准输出引脚输出低电平，并慢慢增加占空比，直至LED应急电源启动；在占空比增加的同时，电压检测引脚与电流检测引脚开始检测电压与电流，并将检测到的结果相乘后与预设定功率进行比较，当检测到的结果低于预设定功率时，继续增加占空比，使LED应急电源消耗功率加大；当检测到的结果高于预设定功率时，减小占空比，使LED应急电源消耗功率减小；
电阻R6、R7为分压电阻，电阻R6和电阻R7串联后，一端分别电性连接电源VCC、MCU控制电路及DC-DC逆变电路，另一端连接地，MCU控制电路的电压检测端连接于电阻R6和电阻R7之间；将VCC电压降到MCU控制电路可检测范围；
电阻R5为电流采样电阻，U6B为运算放大器，电阻R5跨接于运算放大器U6B的同相端和地之间；电阻R8、R9与运算放大器U6B组成运算放大电路，将电阻R5上产生的电压放大，供MCU控制电路检测；
电阻R10、R11，电容C3、C2组成滤波电路，将MCU控制电路基准输出引脚输出的PWM信号转为稳定的直流信号；运算放大器U6A,电阻R12、R13组成恒定电压电路；阻R14为恒定电压电路提供上拉电流，电阻R14一端通过电阻R13连接运算放大器U6A的同相端，另一端连接电源VCC。
运算放大型号为LM324。
本发明的LED应急电源恒功率输出电路只要是带有调光接口的LED灯具，不管功率大于还是小于LED应急电源输出功率，均可以正常应急；接线简单，可以电工现场接线；适合旧灯具改造，改造时不需要修改原灯具的安装方式。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (1)

1.一种LED应急电源恒功率输出电路，其特征在于，包括DC-DC逆变电路、MCU控制电路、电流电压采样电路、恒定电压电路；
所述DC-DC逆变电路将低压直流电逆变成高压交流；
所述电流电压 采样电路为单片机提供可检测的电压信号，供单片机检测计算用；
所述MCU控制电路用于检测电压，电流值，并计算，输出基准信号给恒定电压电路；
所述恒定电压电路接收MCU控制电路的基准信号，并将LED应急电源调光电压进行恒定；
所述LED应急电源恒功率输出电路的工作方法包括：
当VCC接通，逆变控制电路开始工作，变压器第一输出端VO1与变压器第二输出端VO2输出120V或220V交流电压，MCU控制电路基准输出引脚输出低电平，并慢慢增加占空比，直至LED应急电源启动；在占空比增加的同时，电压检测引脚与电流检测引脚开始检测电压与电流，并将检测到的结果相乘后与预设定功率进行比较，当检测到的结果低于预设定功率时，继续增加占空比，使LED应急电源消耗功率加大；当检测到的结果高于预设定功率时，减小占空比，使LED应急电源消耗功率减小；
电阻R6、R7为分压电阻，电阻R6和电阻R7串联后，一端分别电性连接电源VCC、MCU控制电路及DC-DC逆变电路，另一端连接地，MCU控制电路的电压检测端连接于电阻R6和电阻R7之间；将VCC电压降到MCU控制电路可检测范围；
电阻R5为电流采样电阻，U6B为运算放大器，电阻R5跨接于运算放大器U6B的同相端和地之间；电阻R8、R9与运算放大器U6B组成运算放大电路，将电阻R5上产生的电压放大，供MCU控制电路检测；
电阻R10、R11，电容C3、C2组成滤波电路，将MCU控制电路基准输出引脚输出的PWM信号转为稳定的直流信号；运算放大器U6A,电阻R12、R13组成恒定电压电路；电 阻R14为恒定电压电路提供上拉电流，电阻R14一端通过电阻R13连接运算放大器U6A的同相端，另一端连接电源VCC。
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201657471U (zh) * 2010-01-21 2010-11-24 中国电子为华实业发展有限公司 恒功率控制电路
CN103178718A (zh) * 2013-02-28 2013-06-26 重庆大学 数字控制的恒功率dc/dc变换器
CN103973114A (zh) * 2014-05-06 2014-08-06 中国电子科技集团公司第四十一研究所 一种恒功率控制的直流电源
CN203775502U (zh) * 2014-03-10 2014-08-13 李丽 一种氙气灯电子镇流器的驱动电路控制系统
CN105722272A (zh) * 2016-02-15 2016-06-29 深圳迈睿智能科技有限公司 一种恒压调光电源起始电压自适应方法
CN205566720U (zh) * 2016-03-03 2016-09-07 深圳迈睿智能科技有限公司 一种调光起始电压自适应的恒压调光电源
WO2017049815A1 (zh) * 2015-09-25 2017-03-30 深圳创维－Rgb电子有限公司 一种电视背光驱动装置及其驱动方法
CN106851922A (zh) * 2017-03-27 2017-06-13 深圳市明微电子股份有限公司 一种线性恒功率led驱动电路、芯片以及恒流led控制系统
CN206743106U (zh) * 2017-04-18 2017-12-12 深圳市熠辉照明科技有限公司 一种led应急电源输出恒功率电路

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201657471U (zh) * 2010-01-21 2010-11-24 中国电子为华实业发展有限公司 恒功率控制电路
CN103178718A (zh) * 2013-02-28 2013-06-26 重庆大学 数字控制的恒功率dc/dc变换器
CN203775502U (zh) * 2014-03-10 2014-08-13 李丽 一种氙气灯电子镇流器的驱动电路控制系统
CN103973114A (zh) * 2014-05-06 2014-08-06 中国电子科技集团公司第四十一研究所 一种恒功率控制的直流电源
WO2017049815A1 (zh) * 2015-09-25 2017-03-30 深圳创维－Rgb电子有限公司 一种电视背光驱动装置及其驱动方法
CN105722272A (zh) * 2016-02-15 2016-06-29 深圳迈睿智能科技有限公司 一种恒压调光电源起始电压自适应方法
CN205566720U (zh) * 2016-03-03 2016-09-07 深圳迈睿智能科技有限公司 一种调光起始电压自适应的恒压调光电源
CN106851922A (zh) * 2017-03-27 2017-06-13 深圳市明微电子股份有限公司 一种线性恒功率led驱动电路、芯片以及恒流led控制系统
CN206743106U (zh) * 2017-04-18 2017-12-12 深圳市熠辉照明科技有限公司 一种led应急电源输出恒功率电路

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
单片机在超声波恒功率控制中的应用;潘明 等;《三峡大学学报（自然科学版）》;20021230(第06期);520-522 *
基于SPCE061A单片机的直流电子负载的设计;韩春;《信息技术》;20131225(第12期);全文 *

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