CN202111490U - A Simple and Practical Mobile Uninterruptible Power Supply - Google Patents

Abstract

A mobile uninterrupted power source of being simple and practical comprises a rectifying filtering module, a PWM/OVP control module, a main transformation module and an afterflow rectifying filtering module. Externally connected electric supply is input into the rectifying filtering module, is input to the main transformation module after rectification by the rectifying filtering module, is output to the afterflow rectifying filtering module through voltage transformation by the main transformation module, and is output after rectification by the afterflow rectifying filtering module. Besides, the PWM/OVP control module controls work of the main transformation module; the uninterrupted power source also comprises a stand-by power supply and an on-off electricity control module; the afterflow rectifying filtering module outputs rectified direct current to the on-off electricity control module; and simultaneously power is also output to the on-off electricity control module by the stand-by power supply, and the power is output to a load for power supply through the on-off electricity control module. According to the utility model, a relay RLY1 is used as a hard switch for directly switching between an electric supply power supply mode and a stand-by power supply power supply mode; transition efficiency of a converter is substantially increased; and energy loss may not generate during switching.

Description

A kind of simple and practical portable uninterrupted power supply

Technical field

The utility model discloses a kind of uninterrupted power supply, particularly a kind of simple and practical portable uninterrupted power supply.

Background technology

Traditional circuit generally is the pattern that adopts civil power to supply power; When civil power cuts off the power supply; Then can stop immediately powering to the load, be the thing that can't predict because have a power failure, so also can't get ready in earlier stage; Often make meetings such as a lot of significant datas, data and do not lose, cause the user to lose because keep in advance.For head it off; The solution of industry normally adopts traditional vehicle-mounted UPS (being uninterrupted power supply) at present, and UPS of the prior art normally earlier converts the DC in the stand-by power supply (being direct current) into AC (being alternating current) by UPS when work; Then; Convert AC into low voltage DC once more in UPS inside, and then powering load, the conversion process of secondary can cause overall efficiency to reduce about 20% like this.

Summary of the invention

To the above-mentioned uninterrupted power supply of mentioning of the prior art when using stand-by power supply to supply power; The shortcoming that the complete machine operating efficiency reduces, the utility model provide a kind of new simple and practical portable uninterrupted power supply, and it can switch mains-supplied pattern and stand-by power supply powering mode in moment through built-in break-make electric control module; Thereby load also can normally move in the time of both can having guaranteed the civil power outage; Thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss; And the break-make electric control module directly switches between mains-supplied pattern and stand-by power supply powering mode, improved the conversion efficiency of converter greatly.

The break-make electric control module adopts relay R LY1 as hard switching in the utility model, and circuit can energy-producing loss when switching.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of simple and practical portable uninterrupted power supply; Comprise rectification filtering module, PWM/OVP control module, main transformer die change piece and afterflow rectification filtering module; External civil power input rectifying filtration module inputs to main transformer die change piece after the rectification filtering module rectification, after main transformer die change piece carries out voltage transformation, export to the afterflow rectification filtering module; After the rectification of afterflow rectification filtering module, export; The work of PWM/OVP control module control main transformer die change piece, uninterrupted power supply also comprises stand-by power supply and break-make electric control module, the direct current after the afterflow rectification filtering module output rectification is given the break-make electric control module; While stand-by power supply also out-put supply is given the break-make electric control module, exports to electric through the break-make electric control module.

The technical scheme that its technical problem that solves the utility model adopts further comprises:

Described uninterrupted power supply also comprises the stand-by power supply charging module, and the direct current after the afterflow rectification filtering module output rectification is given the stand-by power supply charging module, charges to stand-by power supply through the stand-by power supply charging module.

Described uninterrupted power supply also comprises voltage feedback circuit, voltage feedback circuit sampling afterflow rectification filtering module voltage, and feed back to the PWM/OVP control module.

Described break-make electric control module comprises triode Q2, relay R LY1, voltage stabilizing didoe ZD1 and resistance R 10; Voltage stabilizing didoe ZD1 and resistance R 10 are connected in series; Resistance R 10 is connected on the afterflow rectification filtering module output; Voltage stabilizing didoe ZD1 ground connection, the base stage of triode Q2 are connected on the common port of voltage stabilizing didoe ZD1 and resistance R 10, and afterflow rectification filtering module output is given relay R LY1 power supply through triode Q2; The fixed contact of relay R LY1 is connected on the output; Powering load, the output of afterflow rectification filtering module are connected on the normally opened contact of relay R LY1, and the output of stand-by power supply is connected on the normally-closed contact of relay R LY1.

Described afterflow rectification filtering module output is connected on the normally-closed contact of relay R LY1 simultaneously.

Described voltage feedback circuit comprises sample resistance R22; And the sample resistance R20 that is connected in series successively, optocoupler U2 and three terminal regulator U3; Sample resistance R20 is connected on the input of afterflow rectification filtering module; Sample resistance R22 one end is connected on the output of afterflow rectification filtering module, and the sample resistance R22 other end is connected on the control end of three terminal regulator U3, and optocoupler U2 exports on the feedback pin of PWM/OVP control module.

Described uninterrupted power supply also comprises lightning protection and overcurrent protection module and EMI filtration module, exports to the EMI filtration module after external civil power process lightning protection and the overcurrent protection module, after the filtering of EMI filtration module, exports to rectification filtering module.

The beneficial effect of the utility model is: the utility model be can make terminal equipment in the mains-supplied pattern and between with external standby power mode moment switch; Load also can normally move in the time of both can having guaranteed the civil power outage; Thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss; And the break-make electric control module adopts relay R LY1 as hard switching; Directly between mains-supplied pattern and stand-by power supply powering mode, switch, improved the conversion efficiency of converter greatly, can energy-producing loss when switching.

To combine accompanying drawing and embodiment that the utility model is further specified below.

Description of drawings

Fig. 1 is the circuit block diagram of the utility model.

Fig. 2 is the utility model main circuit part schematic diagram.

Fig. 3 is the complete circuit theory diagrams of the utility model.

Embodiment

Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.

Please referring to accompanying drawing 1 to accompanyingdrawing 3; Mainly comprise rectification filtering module, PWM/OVP control module, main transformer die change piece and afterflow rectification filtering module in the utility model; In the present embodiment, rectification filtering module adopts rectifier bridge BD1, in the present embodiment; The rectification filtering module prime also is connected with lightning protection and overcurrent protection module and EMI filtration module; Lightning protection and overcurrent protection module mainly comprise protective tube F1 and the thermistor NTC1 that is connected on the civil power input live wire, export to the EMI filtration module after external civil power process lightning protection and the overcurrent protection module, in the present embodiment; The EMI filtration module is mainly the capacitor C X1 that is connected across between zero line and the live wire, after the filtering of EMI filtration module, exports to rectification filtering module.External civil power inputs to the EMI filtration module after lightning protection and overcurrent protection module; Input rectifying filtration module after the EMI filtration module carries out EMI filtering inputs to main transformer die change piece after rectification filtering module is with the AC rectification direct current, after main transformer die change piece carries out voltage transformation, export to the afterflow rectification filtering module; In the present embodiment; Main transformer die change piece adopts transformer T1, and the work of PWM/OVP control module control main transformer die change piece is in the present embodiment; The PWM/OVP control module mainly adopts PWM chip U1; PWM chip U1 driving switch pipe Q1, by the break-make of switching tube Q1 control rectification filtering module out-put supply in main transformer die change piece, thus the work of control main transformer die change piece.Main transformer die change piece carries out exporting to the afterflow rectification filtering module behind the voltage transformation;, exports the afterflow rectification filtering module after being rectified into direct current; In the present embodiment, the afterflow rectification filtering module adopts diode D7,capacitor C 8,capacitor C 9,inductance L 2 and capacitor C 10 etc. to form " π " type current rectifying and wave filtering circuit.In the present embodiment; Also comprise stand-by power supply and break-make electric control module; Stand-by power supply adopts storage battery, and in the present embodiment, the direct current after the afterflow rectification filtering module output rectification is given the break-make electric control module; While stand-by power supply also out-put supply is given the break-make electric control module, exports to electric through the break-make electric control module.In the present embodiment; The break-make electric control module comprises triode Q2, relay R LY1, voltage stabilizing didoe ZD1 and resistance R 10; Voltage stabilizing didoe ZD1 and resistance R 10 are connected in series, and resistance R 10 is connected on the afterflow rectification filtering module output V+, voltage stabilizing didoe ZD1 ground connection; The base stage of triode Q2 is connected on the common port of voltage stabilizing didoe ZD1 and resistance R 10; Afterflow rectification filtering module output V+ gives relay R LY1 power supply through triode Q2, and the fixed contact of relay R LY1 is connected on the output, powering load; The output of afterflow rectification filtering module is connected on the normally opened contact of relay R LY1, and the output of stand-by power supply is connected on the normally-closed contact of relay R LY1.In the present embodiment, afterflow rectification filtering module output V+ is connected on the normally-closed contact of relay R LY1 simultaneously.In the present embodiment; Uninterrupted power supply also comprises the stand-by power supply charging module; The power source charges module adopts diode D1; Afterflow rectification filtering module output V+ charges to stand-by power supply through diode D1, and the direct current after the rectification is given the stand-by power supply charging module, charges to stand-by power supply through the stand-by power supply charging module.

In the present embodiment, uninterrupted power supply also comprises voltage feedback circuit, voltage feedback circuit sampling afterflow rectification filtering module voltage, and feed back to the PWM/OVP control module.In the present embodiment; Voltage feedback circuit comprises sample resistance R22; And the sample resistance R20 that is connected in series successively, optocoupler U2 and three terminal regulator U3, sample resistance R20 is connected on the input of afterflow rectification filtering module, and sample resistance R22 one end is connected on the output of afterflow rectification filtering module; The sample resistance R22 other end is connected on the control end of three terminal regulator U3, and optocoupler U2 exports on the feedback pin of PWM/OVP control module.

The utility model is divided into two kinds of mains-supplied pattern and stand-by power supply powering modes in use:

1, mains-supplied pattern: when the civil power normal power supply; Through the break-make electric control module stand-by power supply is quit work; Adopt the voltage of civil power after conversion to export to load (being terminal equipment), and through the stand-by power supply charging module stand-by power supply is charged simultaneously;

2, stand-by power supply powering mode: when civil power is stopped power supply or when terminal equipment uses on outdoor and automobile; This moment is because the no civil power environment of periphery; Then circuit automatically switches to stand-by power supply (being storage battery) through the break-make electric control module and exports to load (being terminal equipment), when civil power is normally imported, reverts to the mains-supplied pattern automatically.

In the present embodiment, the 2nd pin of relay R LY1 is a fixed contact, and the 4th pin is a normally opened contact, and the 5th pin is a normally-closed contact.The 1st pin and the 3rd pin are the power supply coil of relay R LY1, and during use, the 2nd pin of relay R LY1 links to each other with OUT+, and OUT+ is voltage output end, connecting terminal equipment (being load); The 5th pin of relay R LY1 links to each other with the positive pole of stand-by power supply (being storage battery); OUT-is mains-supplied pattern and the public negative terminal of stand-by power supply powering mode; And connecting terminal equipment (being load) formation current supply circuit, the 4th pin of relay R LY1 is connected with afterflow rectification filtering module output V+.During work, afterflow rectification filtering module output V+ voltage provides stable voltage for triode Q2 base stage through resistance R 10 and voltage-stabiliser tube ZD1, makes triode Q2 conducting; Afterflow rectification filtering module output V+ supplies power to the 1-3 pin of relay R LY1 through triode Q2; For it provides constant 5V operating voltage, actuating of relay this moment RLY1, the 2nd pin and the 4th pin are connected; Get into the mains-supplied pattern; Directly exporting to OUT+ by afterflow rectification filtering module output V+ is that terminal equipment provides energy, and meanwhile, the diode D1 that afterflow rectification filtering module output V+ voltage also passes through charging module is to the stand-by power supply charge in batteries.When civil power is stopped power supply or when terminal equipment uses on outdoor and automobile, this moment, transformer T1 quit work because the no civil power environment of periphery; Afterflow rectification filtering module output V+ no-output, triode Q2 ends because of no operating voltage, and this moment, relay R LY1 stopped action because of no supply power voltage; At this moment; The 2nd pin and the 5th pin are connected, and switch to the stand-by power supply powering mode, and exporting to OUT+ by storage battery is that terminal equipment provides energy; This moment, charging module stopped the stand-by power supply charge in batteries, and the capacity of storage battery can influence the operating time of terminal equipment under the stand-by power supply powering mode.When the normal power supply of city power recovery, circuit prior selects to get into mains-supplied pattern, so circulation.

The utility model be can make terminal equipment in the mains-supplied pattern and between with the power supply powering mode moment switch; Load also can normally move in the time of both can having guaranteed the civil power outage; Thereby realize the uninterrupted function of output, the user can be prepared in advance, thereby avoid loss; And the break-make electric control module adopts relay R LY1 as hard switching; Directly between mains-supplied pattern and stand-by power supply powering mode, switch, improved the conversion efficiency of converter greatly, can energy-producing loss when switching.

Claims (7)

Translated fromChinese

1.一种简单实用的移动式不间断电源，包括整流滤波模块、PWM/OVP控制模块、主变换模块和续流整流滤波模块，外接市电输入整流滤波模块，经整流滤波模块整流后输入给主变换模块，经主变换模块进行电压变换后输出给续流整流滤波模块，经续流整流滤波模块整流后输出，PWM/OVP控制模块控制主变换模块工作，其特征是：所述的不间断电源还包括备用电源和通断电控制模块，续流整流滤波模块输出整流后的直流电给通断电控制模块，同时备用电源也输出电源给通断电控制模块，经通断电控制模块输出给负载供电。1. A simple and practical mobile uninterruptible power supply, including a rectification and filtering module, a PWM/OVP control module, a main conversion module and a freewheeling rectification and filtering module. The main conversion module is output to the freewheeling rectification filter module after the voltage conversion is performed by the main conversion module, and then output after being rectified by the freewheeling rectification filter module. The PWM/OVP control module controls the work of the main conversion module. It is characterized in that: the continuous The power supply also includes a backup power supply and a power-on/off control module. The freewheeling rectification filter module outputs rectified direct current to the power-on/off control module. At the same time, the backup power supply also outputs power to the power-on/off control module. power supply to the load.2.根据权利要求1所述的简单实用的移动式不间断电源，其特征是：所述的不间断电源还包括备用电源充电模块，续流整流滤波模块输出整流后的直流电给备用电源充电模块，经备用电源充电模块给备用电源充电。2. The simple and practical mobile uninterruptible power supply according to claim 1, characterized in that: the uninterruptible power supply also includes a backup power charging module, and the freewheeling rectification filter module outputs rectified direct current to the backup power charging module , charging the backup power through the backup power charging module.3.根据权利要求1所述的简单实用的移动式不间断电源，其特征是：所述的不间断电源还包括电压反馈电路，电压反馈电路采样续流整流滤波模块电压，并反馈给PWM/OVP控制模块。3. The simple and practical mobile uninterruptible power supply according to claim 1 is characterized in that: the uninterruptible power supply also includes a voltage feedback circuit, and the voltage feedback circuit samples the voltage of the freewheeling rectification filter module and feeds back to the PWM/ OVP control module.4.根据权利要求2所述的简单实用的移动式不间断电源，其特征是：所述的通断电控制模块包括三极管Q2、继电器RLY1、稳压二极管ZD1和电阻R10，稳压二极管ZD1和电阻R10串联连接，电阻R10连接在续流整流滤波模块输出端上，稳压二极管ZD1接地，三极管Q2的基极连接在稳压二极管ZD1和电阻R10的公共端上，续流整流滤波模块输出端通过三极管Q2给继电器RLY1供电，继电器RLY1的静触点连接在输出端上，给负载供电，续流整流滤波模块的输出端连接在继电器RLY1的常开触点上，备用电源的输出端连接在继电器RLY1的常闭触点上。4. The simple and practical mobile uninterruptible power supply according to claim 2 is characterized in that: the on-off control module includes a triode Q2, a relay RLY1, a Zener diode ZD1 and a resistor R10, a Zener diode ZD1 and The resistor R10 is connected in series, the resistor R10 is connected to the output end of the freewheeling rectification filter module, the Zener diode ZD1 is grounded, the base of the transistor Q2 is connected to the common end of the Zener diode ZD1 and the resistor R10, and the output end of the freewheeling rectifier filter module Power is supplied to the relay RLY1 through the transistor Q2, the static contact of the relay RLY1 is connected to the output terminal to supply power to the load, the output terminal of the freewheeling rectification filter module is connected to the normally open contact of the relay RLY1, and the output terminal of the backup power supply is connected to On the normally closed contact of the relay RLY1.5.根据权利要求4所述的简单实用的移动式不间断电源，其特征是：所述的续流整流滤波模块输出端同时连接在继电器RLY1的常闭触点上。5. The simple and practical mobile uninterruptible power supply according to claim 4, characterized in that: the output end of the freewheeling rectification and filtering module is simultaneously connected to the normally closed contact of the relay RLY1.6.根据权利要求3所述的简单实用的移动式不间断电源，其特征是：所述的电压反馈电路包括取样电阻R22，以及依次串联连接的取样电阻R20、光耦U2和三端稳压器U3，取样电阻R20连接在续流整流滤波模块的输入端上，取样电阻R22一端连接在续流整流滤波模块的输出端上，取样电阻R22另一端连接在三端稳压器U3的控制端上，光耦U2输出至PWM/OVP控制模块的反馈引脚上。6. The simple and practical mobile uninterruptible power supply according to claim 3, characterized in that: the voltage feedback circuit includes a sampling resistor R22, and a sampling resistor R20, an optocoupler U2 and a three-terminal regulator connected in series in sequence U3, the sampling resistor R20 is connected to the input end of the freewheeling rectification filter module, one end of the sampling resistor R22 is connected to the output end of the freewheeling rectification filter module, and the other end of the sampling resistor R22 is connected to the control terminal of the three-terminal regulator U3 On, the optocoupler U2 outputs to the feedback pin of the PWM/OVP control module.7.根据权利要求1至6中任意一项所述的简单实用的移动式不间断电源，其特征是：所述的不间断电源还包括防雷与过流保护模块和EMI滤波模块，外接市电经过防雷与过流保护模块后输出给EMI滤波模块，经EMI滤波模块滤波后输出给整流滤波模块。7. The simple and practical mobile uninterruptible power supply according to any one of claims 1 to 6, characterized in that: the uninterruptible power supply also includes a lightning protection and overcurrent protection module and an EMI filter module, externally connected to the market After the electricity passes through the lightning protection and overcurrent protection module, it is output to the EMI filter module, and after being filtered by the EMI filter module, it is output to the rectification filter module.

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