CN2466848Y - Rectifying module for switching supply unit - Google Patents
Rectifying module for switching supply unit Download PDFInfo
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- CN2466848Y CN2466848Y CN 01201044 CN01201044U CN2466848Y CN 2466848 Y CN2466848 Y CN 2466848Y CN 01201044 CN01201044 CN 01201044 CN 01201044 U CN01201044 U CN 01201044U CN 2466848 Y CN2466848 Y CN 2466848Y
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- factor correction
- power factor
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Abstract
The utility model discloses a rectifying module for a switching supply unit of communication equipment. A control circuit comprises an input commercial power overvoltage protection control circuit using a relay as a switching device, a commercial power input filter circuit, a rectifying filter circuit, a PFC Power factor correction circuit composed of a main circuit, a sampling circuit and a control circuit and a DC-DC converting circuit composed of the main circuit, the sampling circuit, the control circuit, a current equalization circuit and a control module connecting circuit, wherein, the main circuit of the power factor correction circuit uses a Boost boosted circuit and the control circuit is composed of a power factor correction control application specific integrated circuits chip, the specification of which is ML 4821 produced by the Micro-Linear company.
Description
The utility model relates to a kind of switching power unit, exactly, relates to a kind of rectification module of switching power unit, belongs to the high frequency switch power technical field that is used for communication equipment.
At present, the state-of-the-art technology situation of the rectification circuit module of the domestic high frequency switch power that is used for communicator is: ac input division divides and adopts Active Power Factor Correction Technology, the highest single-phase input power factor is between 0.98～0.99, wherein AC-DC, DC-DC converter adopt the PWM switching technique when smaller power, and overall efficiency is more than 88%; And when more high-power (for example 2000W), then adopt the Zero-voltage soft switch technology, to raise the efficiency, overall efficiency is reached more than 90%.The connection mode that power output adopts hot plug to install less than the rectification module of 1000W is mostly installed and needn't be cut off the power supply during maintain and replace and just can operate; The connection mode that power output then adopts non-hot plug to install greater than the rectification module of 1000W is mostly installed and must be cut off the power supply during maintain and replace and just can operate; And the rectification module of some nominal 1000W is permanent power model because of it, and the real output when the big electric current of output HIGH voltage does not just reach 1000W.Simultaneously because the difference of domestic region; the technical foundation difference of the electric power network of various places; make the supply power voltage excursion of civil power bigger; long line voltage overvoltage or under-voltage phenomenon appear through regular meeting; the power-supply system cisco unity malfunction that causes communication equipment; reduced the functional reliability of power-supply system, the functional reliability of whole communication equipment is on the hazard.Simultaneously, the internal structure design technology complexity of this rectification module, volume is big, and natural heat dissipation is unfavorable for enhancing productivity.
The purpose of this utility model provides a kind of rectification module that can overcome the switching power unit of above-mentioned prior art number of drawbacks; make it improve input power factor and complete machine operating efficiency; can be under civil power be imported overpressure situation; can protect automatically; working stability is reliable, and charged hot plug.
The purpose of this utility model is achieved in that a kind of rectification module of switching power unit, control circuit by casing, control panel and Qi Nei is formed, and wherein control circuit includes: the circuit of power factor correction of the input filter circuit of civil power, current rectifying and wave filtering circuit, employing Active Power Factor Correction Technology, DC-DC change-over circuit and current rectifying and wave filtering circuit; Wherein circuit of power factor correction is made up of main circuit, sample circuit and control circuit, and DC-DC change-over circuit is formed by main circuit, sample circuit, control circuit, flow equalizing circuit with the control module connecting circuit, it is characterized in that: wherein the main circuit of circuit of power factor correction adopts the Boost booster circuit, and the model that its control circuit then adopts Micro-linear company to produce is formed by the Power Factor Correction Control dedicated IC chip of ML4821; Also being provided with the relay is the input mains supply over-voltage protection control circuit of switching device; This input mains supply over-voltage protection control circuit mainly includes: be divided into two-way after will inserting diode rectification through the civil power of inductance, wherein one the tunnel behind resistance, voltage stabilizing didoe and electric capacity, be connected to the relay coil feed, be connected to the collector electrode of a triode again; The voltage sampling circuit that another Lu Zejing resistance constitutes, and form by the base stage that is connected to above-mentioned triode behind the voltage stabilizing didoe; The main circuit of civil power is then inserting its subsequent conditioning circuit through the normally closed contact by above-mentioned relay behind the inductance.
Be provided with the potentiometer of the setting voltage value of scalable overvoltage civil power in the voltage sampling circuit in the above-mentioned input mains supply over-voltage protection control circuit,, can regulate the magnitude of voltage of setting mains supply over-voltage by adjusting the resistance of this potentiometer.
Wherein three power switch transistors in the main circuit of circuit of power factor correction adopt the parallel operation mode, to reduce the conducting resistance of this switch, reduce switching loss.
Major advantage of the present utility model is: 1, adopt the high-performance circuit of power factor correction of more optimizing, improve the ac input power factor, the input power factor maximum can be reached more than 0.995.2, set up mains supply over-voltage protection automatic control circuit, this rectification module can be cut off under civil power input overpressure situation automatically exchange input, the protection late-class circuit.3, adopt more rational DC-DC conversion control circuit and major loop, the switching loss of cpable of lowering power switching tube, thus raise the efficiency, the complete machine maximal efficiency is reached more than 91%.4, soft starting circuit is adopted in input, and the quick attachment plug of high-performance is adopted in output, makes this rectification module can charged hot plug.
Describe circuit structure composition of the present utility model, feature and effect in detail below in conjunction with accompanying drawing;
Fig. 1 is the schematic appearance of the utility model rectification module;
Fig. 2 is that the structure of the utility model rectification module control circuit is formed block diagram;
Fig. 3 is the electrical schematic diagram of protection circuit against input over-voltage in the utility model control circuit;
Fig. 4 is the electrical schematic diagram of circuit of power factor correction in the utility model control circuit.
Referring to Fig. 1-Fig. 2, the utility model is a kind of rectification module that is used for the switching power unit of communication equipment, its control circuit by casing 1, control panel 2 and Qi Nei is formed, and wherein control circuit includes: the circuit of power factor correction of the input filter circuit of civil power, current rectifying and wave filtering circuit, employing Active Power Factor Correction Technology, DC-DC change-over circuit and current rectifying and wave filtering circuit; Wherein circuit of power factor correction is made up of main circuit, sample circuit and control circuit, and DC-DC change-over circuit is formed by main circuit, sample circuit, control circuit, flow equalizing circuit with the control module connecting circuit; The improvements of the utility model on circuit mainly contain 2 points: one, wherein the main circuit of circuit of power factor correction adopts the Boost booster circuit, and the model that its control circuit then adopts Micro-linear company to produce is formed by the Power Factor Correction Control dedicated IC chip of ML4821; Two, also being provided with the relay is the input mains supply over-voltage protection control circuit of switching device.
The operation principle of the utility model rectification module is: civil power at first is connected to input overvoltage automatic protection circuit; after carrying out rectifying and wave-filtering through the EMC input filter circuit then; be converted to direct voltage; carry out Active Power Factor Correction through the PFC circuit of power factor correction again; improve the power factor of circuit; insert the DC-DC DC transfer circuit at last; the function of this DC-DC DC transfer circuit is that the stable DC voltage that the PFC circuit of power factor correction provides is carried out high frequency conversion, is transformed to the output of 48V nominal burning voltage again behind rectifying and wave-filtering.Wherein the DC-DC inverter main circuit adopts the no-voltage full-bridge circuit, and control circuit adopts the UC3875 phase shift resonance control chip of UNITRODE company.
Referring to Fig. 3, input mains supply over-voltage protection control circuit operation principle of the present utility model is: be divided into two-way after will inserting diode rectification through the civil power of inductance, wherein one the tunnel carries out voltage stabilizing by voltage stabilizing didoe D302, D302 after resistance R 301, R302 dividing potential drop, and, be connected to the collector electrode of a triode Q301 again by being connected to relay R LY3 after capacitor C 301, the C302 filtering to the coil feed; The voltage sampling circuit that another Lu Zejing resistance R 303, R305 and potentiometer POT301 constitute, and form by the base stage that is connected to above-mentioned triode Q301 behind the voltage stabilizing didoe D304; The main circuit of civil power is then inserting its subsequent conditioning circuit through the normally closed contact by above-mentioned relay R LY3 behind circuit breaker S1 and the inductance L 7A.When the line voltage of input is higher than setting protection value (as 295Vac); voltage stabilizing didoe D304 is breakdown; the collector electrode c of triode Q301 and the conducting of the base stage e utmost point; make the coil making current of relay R LY3 and its normally-closed contact is disconnected; thereby disconnect the interchange input of the utility model rectification module, the protection late-class circuit.(as long as be lower than the setting voltage value 10-15Vac) of overvoltage protection, triode Q301 just ends, and relay R LY3 coil blackout, its normally-closed contact are closed again, and rectification module is resumed work again and when in a single day the input civil power returns to normal range (NR).Can change the setting voltage value of mains supply over-voltage by the resistance of adjusting the potentiometer POT301 in the above-mentioned voltage sampling circuit.
Referring to Fig. 4, the PFC work principle of Power Factor Correction Circuit of the utility model rectification module is: exchange the input civil power and send into PFC power factor correction main circuit after rectification, main circuit adopts the Boost booster circuit, inductance L 4, L5 are energy storage inductor, triode Q28, Q29, Q30 are power switch, adopt the parallel operation mode, can reduce the conducting resistance of this switch, reduce switching loss; Capacitor C 60-C63 and C63A, C63B are the big capacity filtering of high frequency storage capacitors.The model that its control circuit then adopts Micro-linear company to produce is the Power Factor Correction Control dedicated IC chip U8 of ML4821, adopt the Average Current Control mode, this chip internal circuit mainly comprises precise and stable reference level, fader, average current error amplifier, overvoltage protection comparator, closes logical circuit, big electric current output drives and soft starting circuit; Also be provided with the circuit that improves anti-interference function.So the ML4821 chip needs only less peripheral cell just can constitute complete control circuit.
As shown in Figure 4, current sensor T7, T8 and diode D70, D71, resistance R 225 and capacitor C 119 are formed the current sample electric current; RECT is the voltage waveform sampled signal of civil power after full-bridge rectification among the figure, is used for the sinusoidal wave correction of continuous current.Resistance R 173, R174, R179 and R180 are used for the sampling of Boost output circuit, carry out the Boost overvoltage protection.U9, U10 are dedicated PWM pulsed drive integrated circuit (IC) chip, are used for the driving power switching tube.
The circuit structure design of whole module of the present utility model is divided into two parts and forms, and wherein first is a tablet: comprise the circuit such as interface circuit that input overvoltage automatic protection circuit, input filter circuit, rectification circuit, auxiliary power circuit and module are connected with control module.And second portion is a motherboard circuit: comprise PFC power factor correction main circuit and control circuit, DC-DC conversion main circuit and control circuit, various automatic protection circuit, flow equalizing circuit, output filter circuit, direct current output interface etc.Two parts circuit is taked EMC Design, to reduce mutual electromagnetic interference as far as possible.
The utility model has been tested enforcement, and manufacturing experimently out power is the rectification module of two kinds of specifications of 1000W and 2000W, and the field test through has after a while realized goal of the invention, and many index has reached designing requirement and had popularizing application prospect preferably.
Claims (3)
1, a kind of rectification module of switching power unit, control circuit by casing, control panel and Qi Nei is formed, and this control circuit includes: the circuit of power factor correction of the input filter circuit of civil power, current rectifying and wave filtering circuit, employing Active Power Factor Correction Technology, DC-DC change-over circuit and current rectifying and wave filtering circuit; Wherein circuit of power factor correction is made up of main circuit, sample circuit and control circuit, and DC-DC change-over circuit is formed by main circuit, sample circuit, control circuit, flow equalizing circuit with the control module connecting circuit, it is characterized in that: wherein the main circuit of circuit of power factor correction adopts the Boost booster circuit, and the model that its control circuit then adopts Micro-linear company to produce is formed by the Power Factor Correction Control dedicated IC chip of ML4821; Also being provided with the relay is the input mains supply over-voltage protection control circuit of switching device; This input mains supply over-voltage protection control circuit mainly includes: be divided into two-way after will inserting diode rectification through the civil power of inductance, wherein one the tunnel behind resistance, voltage stabilizing didoe and electric capacity, be connected to the relay coil feed, be connected to the collector electrode of a triode again; The voltage sampling circuit that another Lu Zejing resistance constitutes, and form by the base stage that is connected to above-mentioned triode behind the voltage stabilizing didoe; The main circuit of civil power is then inserting its subsequent conditioning circuit through the normally closed contact by above-mentioned relay behind the inductance.
2, the rectification module of switching power unit as claimed in claim 1 is characterized in that: the potentiometer that is provided with the setting voltage value of scalable overvoltage civil power in the voltage sampling circuit in the above-mentioned input mains supply over-voltage protection control circuit.
3, the rectification module of switching power unit as claimed in claim 1 is characterized in that: wherein three power switch transistors in the main circuit of circuit of power factor correction adopt the parallel operation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201044 CN2466848Y (en) | 2001-01-15 | 2001-01-15 | Rectifying module for switching supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201044 CN2466848Y (en) | 2001-01-15 | 2001-01-15 | Rectifying module for switching supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2466848Y true CN2466848Y (en) | 2001-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01201044 Expired - Lifetime CN2466848Y (en) | 2001-01-15 | 2001-01-15 | Rectifying module for switching supply unit |
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| CN (1) | CN2466848Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007118400A1 (en) * | 2006-04-13 | 2007-10-25 | Emerson Network Power Energy Systems Ab | A hardware overvoltage breakaway circuit |
| WO2010124577A1 (en) * | 2009-04-30 | 2010-11-04 | 浙江关西电机有限公司 | Electric sewing machine |
| CN102170234A (en) * | 2011-04-27 | 2011-08-31 | 奇瑞汽车股份有限公司 | Digital control system for DC/DC converter |
| CN102983719A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Multi-waveform input adaptive power adapter |
| CN102983725A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Undifferentiated conversion circuit of input power supply |
| CN102983718A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Power supply converting circuit capable of supporting various input waveforms |
| CN102983720A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Safe output-current-limiting automatic polarity identification directional power switching circuit |
| CN103023288A (en) * | 2012-11-30 | 2013-04-03 | 西安智海电力科技有限公司 | Automatic polarity identification directional power-switching circuit |
| CN103023289A (en) * | 2012-11-30 | 2013-04-03 | 西安智海电力科技有限公司 | Indifference output power switching circuit with load protection |
| CN103138606A (en) * | 2013-03-19 | 2013-06-05 | 青岛乾程电子科技有限公司 | Energy conservation type switch power source |
| CN103190200A (en) * | 2010-11-03 | 2013-07-03 | 皇家飞利浦电子股份有限公司 | Driver device and driving method for driving a load, in particular an LED unit |
| CN103427665A (en) * | 2013-08-14 | 2013-12-04 | 西安睿诺新能源有限公司 | Ship-borne power source |
| CN108717278A (en) * | 2018-04-03 | 2018-10-30 | 华南理工大学 | A kind of multi-channel parallel real-time digital for PFC rectification modules judges implementation method |
| CN104333227B (en) * | 2002-04-29 | 2019-04-30 | 沃尔缇夫能源系统公司 | Power-supply system and equipment |
| CN115065228A (en) * | 2022-06-29 | 2022-09-16 | 江苏埃施朗电气有限公司 | Output sharing type industrial power supply |
-
2001
- 2001-01-15 CN CN 01201044 patent/CN2466848Y/en not_active Expired - Lifetime
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333227B (en) * | 2002-04-29 | 2019-04-30 | 沃尔缇夫能源系统公司 | Power-supply system and equipment |
| CN100566068C (en) * | 2006-04-13 | 2009-12-02 | 艾默生网络能源系统有限公司 | Hardware overvoltage breaking-off circuit |
| US8098468B2 (en) | 2006-04-13 | 2012-01-17 | Emerson Network Power, Energy Systems, North America, Inc. | Hardware overvoltage disconnecting circuit |
| RU2457596C2 (en) * | 2006-04-13 | 2012-07-27 | Эмерсон Нетворк Пауэр, Энерджи Системс, Норт Америка, Инк. | Overvoltage protection device |
| WO2007118400A1 (en) * | 2006-04-13 | 2007-10-25 | Emerson Network Power Energy Systems Ab | A hardware overvoltage breakaway circuit |
| US8547674B2 (en) | 2006-04-13 | 2013-10-01 | Emerson Network Power, Energy Systems, North America | Hardware overvoltage disconnecting circuit |
| WO2010124577A1 (en) * | 2009-04-30 | 2010-11-04 | 浙江关西电机有限公司 | Electric sewing machine |
| CN103190200A (en) * | 2010-11-03 | 2013-07-03 | 皇家飞利浦电子股份有限公司 | Driver device and driving method for driving a load, in particular an LED unit |
| CN103190200B (en) * | 2010-11-03 | 2017-05-10 | 飞利浦照明控股有限公司 | Driver device and driving method for driving a load, in particular an LED unit |
| CN102170234A (en) * | 2011-04-27 | 2011-08-31 | 奇瑞汽车股份有限公司 | Digital control system for DC/DC converter |
| CN103023289B (en) * | 2012-11-30 | 2015-08-26 | 西安智海电力科技有限公司 | With the indifference out-put supply change-over circuit of load protection |
| CN102983725B (en) * | 2012-11-30 | 2015-08-26 | 西安智海电力科技有限公司 | Input power indifference change-over circuit |
| CN102983719A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Multi-waveform input adaptive power adapter |
| CN103023288A (en) * | 2012-11-30 | 2013-04-03 | 西安智海电力科技有限公司 | Automatic polarity identification directional power-switching circuit |
| CN102983720A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Safe output-current-limiting automatic polarity identification directional power switching circuit |
| CN102983725A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Undifferentiated conversion circuit of input power supply |
| CN102983720B (en) * | 2012-11-30 | 2015-01-21 | 西安智海电力科技有限公司 | Safe output-current-limiting automatic polarity identification directional power switching circuit |
| CN103023289A (en) * | 2012-11-30 | 2013-04-03 | 西安智海电力科技有限公司 | Indifference output power switching circuit with load protection |
| CN102983718A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | Power supply converting circuit capable of supporting various input waveforms |
| CN102983718B (en) * | 2012-11-30 | 2016-06-08 | 西安智海电力科技有限公司 | The power-switching circuit of multiple input waveform can be supported |
| CN103138606A (en) * | 2013-03-19 | 2013-06-05 | 青岛乾程电子科技有限公司 | Energy conservation type switch power source |
| CN103427665A (en) * | 2013-08-14 | 2013-12-04 | 西安睿诺新能源有限公司 | Ship-borne power source |
| CN108717278A (en) * | 2018-04-03 | 2018-10-30 | 华南理工大学 | A kind of multi-channel parallel real-time digital for PFC rectification modules judges implementation method |
| CN115065228A (en) * | 2022-06-29 | 2022-09-16 | 江苏埃施朗电气有限公司 | Output sharing type industrial power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110115 Granted publication date: 20011219 |