CN205070590U - Formula DC -DC converter circuit is swashed to reverse side of electronic equipment standby power - Google Patents

Formula DC -DC converter circuit is swashed to reverse side of electronic equipment standby power Download PDF

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Publication number
CN205070590U
CN205070590U CN201520491043.4U CN201520491043U CN205070590U CN 205070590 U CN205070590 U CN 205070590U CN 201520491043 U CN201520491043 U CN 201520491043U CN 205070590 U CN205070590 U CN 205070590U
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China
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circuit
electronic equipment
power
standby power
inverse
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CN201520491043.4U
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Chinese (zh)
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鲁霄钢
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Wo Si Electron Technology Co Ltd Of Quzhou City
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Wo Si Electron Technology Co Ltd Of Quzhou City
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    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Dc-Dc Converters (AREA)

Abstract

The utility model discloses a formula DC -DC converter circuit is swashed to reverse side of electronic equipment standby power, the drain electrode of the input winding P1 different name termination MOS of its pulse frequency modulation circuit pipe TR2, MOS pipe TR2 source electrode connects triode TR2 base through resistance R5 ground connection with through bias resistor R9 respectively, and bias resistor R9 both ends shunt capacitance C5, triode TR1 collecting electrode meets MOS pipe TR2 grid, triode TR1 emitter ground, feedback winding P3 end of the same name connects MOS pipe TR2 grid through electric capacity C6, resistance R11, the input electric quantity connects MOS pipe TR2 grid through soft start circuit in addition all the way, benchmark amplifier circuit includes stabiliser ADJ to form the voltage negative feedback return circuit through opto -coupler OC1, pulse frequency modulation circuit transistor TR1 base, steady voltage output circuit is formed by connecting transformer T1 output winding P2, rectifier diode D1 and filter capacitance C3. The utility model discloses a standby electrical power generating system and branch system or part is improved, standby power supply product wholeness ability can be improved.

Description

A kind of inverse-excitation type DC-DC converter circuit of electronic equipment standby power
Technical field
The utility model relates to power technology, particularly electronic equipment standby power system and subsystem thereof or parts.
Background technology
At present, the electronic equipment such as television set, air-conditioning all employ standby power, and in the standby state, electronic equipment still needs to expend 220V or the 380V energy, and this is comparatively unfavorable for energy-saving and emission-reduction.In addition, the frequency of existing standby power circuit part is more and more higher, and power density is also increasing, too increases product power consumption thus.Therefore, be necessary to improve electronic equipment standby power system and subsystem thereof or parts, to reduce the power consumption of product, realize energy-conservation object.
Utility model content
In view of this, the purpose of this utility model is to improve electronic equipment standby power system and subsystem thereof or parts, to realize power conservation requirement.
For solving the problems of the technologies described above, the utility model provides a kind of inverse-excitation type DC-DC converter circuit of electronic equipment standby power, electronic equipment standby power comprises the electric energy access device connected successively, filter circuit of pressure-stabilizing and inverse-excitation type DC-DC converter, electric energy access device comprises solar power supply apparatus, solar power supply apparatus comprises solar cell, battery controller, storage battery and inverter, the pulse frequency modulation circuit of inverse-excitation type DC-DC converter comprises NPN type triode TR1, electric capacity C6 and electric capacity C5, resistance R11 and resistance R9, sustained diode 3 and feedback winding P3, input electricity is from the Same Name of Ends access of input winding P1, the drain electrode of the different name termination metal-oxide-semiconductor TR2 of input winding P1, the source electrode of metal-oxide-semiconductor TR2 is respectively by resistance R5 ground connection and the base stage being met triode TR2 by biasing resistor R9, and the two ends shunt capacitance C5 of biasing resistor R9, triode TR1 collector electrode connects the grid of metal-oxide-semiconductor TR2, the grounded emitter of triode TR1, feedback winding P3 Same Name of Ends connects the grid of metal-oxide-semiconductor TR2 through electric capacity C6, resistance R11, an other road of input electricity connects the grid of metal-oxide-semiconductor TR2 through soft starting circuit, benchmark amplifying circuit comprises pressurizer ADJ, so that the base stage coating-forming voltage negative feedback loop of the transistor TR1 through optocoupler OC1, pulse frequency modulation circuit, voltage-stabilizing output circuit is formed by connecting by output winding P2, the rectifier diode D1 of transformer T1 and filter capacitor C3.
Compared with prior art, the standby electronic equipment standby power of the utility model have employed solar energy accumulation, in the standby state without the need to consuming civil power electric energy, has saved electric energy thus.In addition, the protective circuit part of the utility model to electronic equipment standby power is improved, and the energy of this protective circuit part autophage is considerably less, thus can reduce short circuit loss further, effectively improves power-efficient.
Accompanying drawing explanation
Fig. 1 is the block diagram of the utility model electronic equipment standby power;
Fig. 2 is the electrical schematic diagram of the utility model electronic equipment standby power;
Fig. 3 is the block diagram of mains power supply in the utility model electronic equipment standby power;
Fig. 4 is the circuit diagram of AC/DC convertor in the utility model electronic equipment standby power;
Fig. 5 is the block diagram of solar power supply apparatus in the utility model electronic equipment standby power;
Fig. 6 is the block diagram of solar cell in the utility model electronic equipment standby power;
Fig. 7 is the block diagram of battery controller in the utility model electronic equipment standby power;
Fig. 8 is the block diagram of storage battery in the utility model electronic equipment standby power;
Fig. 9 is the block diagram of inverter in the utility model electronic equipment standby power;
Figure 10 is the block diagram of inverse-excitation type DC-DC converter embodiment one in the utility model electronic equipment standby power;
Figure 11 is the electrical schematic diagram of inverse-excitation type DC-DC converter embodiment two in the utility model electronic equipment standby power;
Figure 12 is the electrical schematic diagram of inverse-excitation type DC-DC converter embodiment three in the utility model electronic equipment standby power;
Figure 13 is the circuit diagram of inverse-excitation type DC-DC converter embodiment four in the utility model electronic equipment standby power;
Figure 14 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment five in the utility model electronic equipment standby power;
Figure 15 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment six in the utility model electronic equipment standby power;
Figure 16 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment seven in the utility model electronic equipment standby power;
Figure 17 is the output short circuit protection partial circuit figure of converter embodiment eight in the utility model electronic equipment standby power;
Figure 18 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment nine in the utility model electronic equipment standby power.
Embodiment
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
For simplicity, in following examples, components and parts code name has been undertaken encoding wherein by certain rule: first digit represents the element number in example, and second digit represents element place figure number, as in resistance R10-11, the position of 10 expression resistance, 11 are expressed as the resistance in Figure 13.It is noted that the second digit wherein only representing embodiment numbering hereafter may be omitted in some cases, and be only retained as the first digit of Reference numeral.
See Fig. 1, it is the block diagram of the utility model electronic equipment standby power.This electronic equipment standby power comprises the electric energy access device 100, filter circuit of pressure-stabilizing 200 and the inverse-excitation type DC-DC converter 300 that connect successively, electric energy access device 100 utility mode or solar energy pattern can provide DC input voitage, filter circuit of pressure-stabilizing 200 pairs of DC input voitage carry out voltage stabilizing and filtering, voltage stabilizing and filtered input voltage are carried out DC-dc conversion by inverse-excitation type DC-DC converter (RCC) 300, export satisfactory DC-voltage supply subset and use.
See Fig. 2, it is the electrical schematic diagram of the utility model electronic equipment standby power.The electric energy access device 100 of this electronic equipment standby power comprises mains power supply, solar power supply apparatus and diverter switch, is switched to utility mode or solar energy pattern by diverter switch, to provide the input voltage of direct current; The input voltage-stabiliser tube of filter circuit of pressure-stabilizing 200 is connected between the input of diverter switch and inverse-excitation type DC-DC converter 300, between the input that input filter capacitor is connected to inverse-excitation type DC-DC converter 300 and ground; Inverse-excitation type DC-DC converter 300 comprises transformer, and the input winding of transformer is connected to conversion input circuit, and the output winding of transformer is connected to conversion output loop, to carry out voltage transformation under the control of conversion controlling brancher.
See Fig. 3, it is the block diagram of mains power supply in the utility model electronic equipment standby power.This mains power supply 110 comprises civil power access terminal 111, AC/DC changeover switch 112 successively, civil power access terminal 111 accesses 220v or 380v alternating current AC, be converted to direct current DC through AC/DC changeover switch 112, under utility mode, provide direct current to input to inverse-excitation type DC-DC converter.When sunlight is not enough, civil power mode of operation starts, 220v or 380v mains electricity is converted to direct current through AC/DC changeover switch 112, to drive inverse-excitation type DC-DC converter.
See Fig. 4, it is the circuit diagram of AC/DC convertor in the utility model electronic equipment standby power.This comprises AC/DC changeover switch and mainly comprises rectification circuit 1121 and filter circuit 1122, wherein: rectification circuit 1121 carries out rectification process for giving input AC electricity, preferably adopt full-wave bridge rectifier circuit BR1, it is made up of four diodes, simplicity of design is practical, can meet the rectification demand of client well, filter circuit 1122 is for carrying out filtering process to the alternating current V+ after rectification process, it comprises diode D3.4, diode D4.4, diode D8.4, diode D9.4, electric capacity C7.4 and electric capacity C9.4, the anode of diode D3.4 is connected with the output of rectification circuit, the negative electrode of diode D3.4 is connected with the negative electrode of diode D9.4, one end of electric capacity C7.4 is connected with the negative electrode of diode D3.4, the other end of electric capacity C7.4 is connected with the anode of diode D8.4 and the negative electrode of diode D4.4 respectively, the negative electrode of diode D8.4 is connected with the anode of diode D9.4, one end of electric capacity C9.4 is connected with the anode of diode D4.4, the other end of electric capacity C9.4 is connected with the anode of diode D9.4, the negative electrode of diode D9.4 is also connected with DC output end.
As shown in Figure 4, operation principle and the work process of this AC/DC changeover switch are: during conversion, energy storage is carried out in electric capacity C7.4 and electric capacity C9.4 series connection, electric capacity C7.4 and electric capacity C9.4 is made to be the conversion that small capacitances can complete the original AC-DC using bulky capacitor to realize, what reduce AC/DC changeover switch realizes cost, reduces the power factor of whole circuit simultaneously.When the voltage of the alternating current after rectification process be greater than electric capacity C7.4 and electric capacity C9.4 voltage and time, alternating current after rectification process charges to arriving electric capacity C7.4 and electric capacity C9.4 through diode D3.4, electric capacity C7.4, diode D8.4 and electric capacity C9.4 successively, and diode D4.4 and diode D9.4 ends.Here electric capacity C7.4 and electric capacity C9.4 uses the electric capacity of equal capacitance value, and these two electric capacity can be charged to (Vbuck/2)=(Vac peak value/2).The voltage of the alternating current after at this moment rectification process be less than or equal to electric capacity C7.4 and electric capacity C9.4 voltage and, namely V+ changes to and is less than or equal to (Vac peak value/2), diode D3.4 ends, V+ no longer powers to DC output end, at this moment diode D8.4 ends, diode D4.4 and diode D9.4 conducting.Discharged to DC output end by electric capacity C7.4, diode D4.4 and electric capacity C9.4, diode D9.4, namely by electric capacity C7.4 and electric capacity C9.4, load circuit is powered.At this moment the change in voltage of DC output end (i.e. Vbuck) would not have crest and trough with V+ sample, but the crest of smooth change, play the effect of waveform copped wave thus.Be less than or equal to when V+ changes to (Vac peak value/2) simultaneously, V+ does not power to DC output end, namely when change in voltage is trough, input current is also decreased to 0, so voltage and current change consistency is better than the general consistency with the circuit of electrochemical capacitor greatly, so the power supply input power factor of the present embodiment AC/DC changeover switch also can improve.
In the diagram, AC/DC changeover switch also comprises filter capacitor C10.4, and one end of filter capacitor C10.4 is connected with DC output end, the other end ground connection of filter capacitor C10.4.Voltage DC output end being exported by the filtering of electrolytic capacitor filter C10 is more level and smooth, better meets the demand of user's direct current supply.In addition, this AC/DC changeover switch also comprises the light-emitting diode D1.4 of the operating state being used to indicate AC/DC changeover switch, the minus earth of light-emitting diode D1.4, and the anode of light-emitting diode D1.4 is connected with DC output end Vbuck by resistance R5.4.Further; this AC/DC changeover switch also comprises the voltage stabilizing didoe D2.4 for the protection of light-emitting diode D1.4; the plus earth of voltage stabilizing didoe D2.4, the negative electrode of voltage stabilizing didoe D2.4 is connected with the anode of DC output end and light-emitting diode D1.4 respectively by resistance R4.4.When the AC/DC changeover switch of the present embodiment is powered to DC output end, at this moment light-emitting diode D1.4 can be lit to indicate this AC/DC changeover switch in running order.Voltage stabilizing didoe D2.4 then can ensure that the operating voltage at light-emitting diode D1.4 two ends can not be excessive and damaged by light-emitting diode D1.4.
See Fig. 5, it is the block diagram of solar power supply apparatus in the utility model electronic equipment standby power.This solar power supply apparatus 120 comprises solar cell 121, battery controller 122, storage battery 123, inverter 124, solar cell 121 is preferably thin-film solar cells, battery controller 122 has charging circuit 1221, control circuit 1222 and discharge circuit 1223, charging circuit 1221 is connected between solar cell 121 and storage battery 123, discharge circuit 1223 is connected between storage battery 123 and inverter 124, control circuit 1222 connects charging circuit 1221, discharge circuit 1223 and storage battery 123 respectively, and inverter 124 is connected to AC load.The electronic equipment standby power of the present utility model that can be of such storage battery 123 provides DC input voitage; The alternating current of inverter 124 can drive corresponding AC load, as (the utility model do not mark) such as motors.
In Figure 5, solar cell 121 is the core of solar power supply apparatus, and its effect is that the radianting capacity of the sun is converted to electric energy, or is sent in storage battery and stores, or pushing motor work.The effect of battery controller 122 is the operating states controlling whole system, and storage battery is played to the effect of additives for overcharge protection, over.The effect of storage battery 123 is the electrical power storage sent by solar cell when there being illumination, and it's time to needs to discharge again.
See Fig. 6, it is the block diagram of solar cell in the utility model electronic equipment standby power.Solar cell 121 is thin-film solar cells, it comprises the first electro-conductive glass substrate 1211, deposit absorbent layer 1212, resilient coating 1213, conductive silver glue 1214 and the second electro-conductive glass substrate 1215, wherein: the first electro-conductive glass substrate 1211, deposit absorbent layer 1212, resilient coating 1213, conductive silver glue 1214 and the second electro-conductive glass substrate 1215 from top to bottom set gradually; Extraction electrode (scheming not shown) in first electro-conductive glass substrate 1211 and the second electro-conductive glass substrate 1215, be generally that the first electro-conductive glass substrate 1211 draws positive electrode above, the second electro-conductive glass substrate 1215 draws negative electrode above.
In Fig. 6, the specification of above-mentioned each layer can be: the length of the first electro-conductive glass substrate 1211, second electro-conductive glass substrate 1215 is 40mm, and width is 15mm, and thickness is 3mm; Deposit absorbent layer 1212 is made for semiconductor nano material, and length is 30mm, and width is 15mm, and thickness is 2 × 10 -3mm; Resilient coating 1213 is In 2s 3material is made, and length is 25mm, and width is 15mm, and thickness is 4 × 10 -3mm; The length of conductive silver glue 1214 is 20mm, and width is 15mm, and thickness is 2 × 10 -3mm.Setting like this, material consumption is few, manufactures energy consumption low, and has excellent effect at the aspect of performance such as voltage improving battery.
See Fig. 7, it is the block diagram of battery controller in the utility model electronic equipment standby power.This battery controller 122 comprises charging circuit 1221, discharge circuit 1223, control circuit 1222 and lightning protection circuit 1224, and charging circuit 1221, discharge circuit 1223 and storage battery 123 are in parallel, and lightning protection circuit 1224 and storage battery 123 are connected.Owing to adding lightning protection circuit 1224, the thunder-strike current flowing through storage battery 123 greatly reduces.
Lightning protection circuit 1224 in the present embodiment is specially lightning protection inductance, and the thunder-strike current flowing through storage battery 123 after adding this lightning protection inductance greatly reduces; Meanwhile, the induction reactance of this lightning protection inductance much larger than accumulator internal resistance, thus at storage battery 123 two ends a point residual voltage also greatly reduce, also enhance the lightning protection capability of system like this.In addition, also can to connect respectively lightning protection inductance in charging circuit 1221, discharge circuit 1223, to improve lightning protection capability further.
See Fig. 8, it is the block diagram of storage battery in the utility model electronic equipment standby power.This storage battery 123 comprises accumulator body 1231, battery management module 1232, data/address bus 1233, auxiliary power supply bus 1235 and auxiliary charging control line 1234, and wherein the positive pole of accumulator body 1231 is connected with battery management module 1232 respectively with negative pole.Further illustrate as follows.
In Fig. 8, this battery management module 1232 comprises the detection control unit 12321 be connected respectively with the positive pole of accumulator body 1231 and negative pole and the supplemental charging unit 12322 be connected respectively with negative pole with the positive pole of accumulator body 1231, and detection control unit 201 is connected with supplemental charging unit 202; Data/address bus 1233 is connected with detection control unit 12321; Auxiliary power supply bus 1235 is connected with supplemental charging unit 12322; Auxiliary charging control line 1234 is connected with the output of detection control unit 12321; Detection control unit 12321, for detecting the running status of accumulator body 1231 in real time, when the real-time voltage of accumulator body 1231 is less than threshold voltage, charged by auxiliary power supply bus 1235 pairs of accumulator bodies 1231 by supplemental charging unit 12322.
In the present embodiment, detection control unit 12321 can detect the state of accumulator body 1231, and carry out discharge and recharge operation to this accumulator body 1231 under the coordinative role of supplemental charging unit 12322, thus storage battery entirety is made all to remain on desirable balance of voltage state.Storage battery so both can be made to keep active, the state of the balance of voltage can have been reached again, and be unlikely to occur to overcharge or the state of charge less, which thereby enhance the life-span of storage battery.
See Fig. 9, it is the block diagram of inverter in the utility model electronic equipment standby power.This inverter comprises power tube driving chip, and this power tube driving chip is connected to microcontroller circuit (MCU/DSP), so that the pulse width modulating signal exported according to microcontroller circuit, drives corresponding power tube alternate conduction and shutoff.Concrete, described inverter comprises six power tube B1 ~ B6, and these six power tubes are divided into three groups, and every group power controls a phase and exports.
The concrete connected mode of each power tube is: the source electrode of power tube B1, B2, B3 connects one end of DC power supply jointly, the drain electrode of power tube B4, B5, B6 connects the other end of DC power supply jointly, the tie point of the drain electrode of power tube B1 and the source electrode of power tube B4 connects the U phase terminal of AC load (as motor), the tie point of the drain electrode of power tube B2 and the source electrode of power tube B5 connects the V phase terminal of AC load, and the drain electrode of power tube B3 and the source electrode tie point of power tube B6 connect the W phase terminal of frequency converting air-conditioner compressor AC load; The grid of power tube B1, B2, B3, B4, B5, B6 connects an output of power tube driving chip respectively, and each input of this power tube driving chip controls by output pulse width conditioning signal PWM1, PWM2, PWM3, PWM4, PWM5, PWM6 Zhong mono-tunnel of microcontroller circuit respectively.Corresponding access diode between the source electrode of these six power tube B1 ~ B6 and drain electrode.
Microprocessor produces corresponding 6 road pulse width modulating signals, i.e. six drive singal PWM1 ~ PWM6 according to the operation rule of setting; 6 power tube (MOSFET or IGBT) B1 ~ B6 of inverter are driven by power tube driving chip; The alternate conduction of these power tubes and shutoff, produce three-phase modulations waveform, output voltage is adjustable, the three-phase alternating current of changeable frequency, and U, V, W terminals of three-phase electricity winding are connected to respective quadrature current load and run to drive it.
See Figure 10, it is the block diagram of inverse-excitation type DC-DC converter embodiment one in the utility model electronic equipment standby power.This inverse-excitation type DC-DC converter mainly comprises input filter circuit, soft starting circuit, metal-oxide-semiconductor, transformer, pulse frequency modulation circuit (PFM), benchmark amplifying circuit, circuit such as isolation optocoupler, voltage-stabilizing output circuit etc., wherein: input voltage connects voltage-stabilizing output circuit through transformer; Soft starting circuit connects the grid of metal-oxide-semiconductor, and the grid of this metal-oxide-semiconductor also connects pulse frequency modulation circuit; Benchmark amplifying circuit, isolation optocoupler, thus coating-forming voltage negative feedback loop is also connected between pulse frequency modulation circuit and voltage-stabilizing output circuit.
See Figure 11, it is the block diagram of inverse-excitation type DC-DC converter embodiment two in the utility model electronic equipment standby power.Its circuit basic composition is: pulse frequency modulation circuit is primarily of compositions such as NPN type triode TR1-11, electric capacity C6-11 and resistance C5-11, resistance R11-11 and resistance R9-11, sustained diode 3-11 and feedback winding P3-11; Input voltage is from the Same Name of Ends access of input winding P1-11, and input the drain electrode of the different name termination metal-oxide-semiconductor TR2-11 of winding P1-11, the source electrode of this metal-oxide-semiconductor TR2-11 is respectively by resistance R5-11 ground connection and the base stage being met triode TR2-11 by biasing resistor R9-11, and the two ends shunt capacitance C5-11 of this biasing resistor R9-11; Triode TR1-11 collector electrode connects the grid of metal-oxide-semiconductor TR2-11, simultaneously the grounded emitter of triode TR1-11; Feedback winding P3-11 Same Name of Ends connects the grid of metal-oxide-semiconductor TR2-11 through electric capacity C6-11, resistance R11-11; In addition, an other road of input voltage connects the grid of metal-oxide-semiconductor TR2-11 through soft starting circuit; And benchmark amplifying circuit is made up of pressurizer ADJ, it act as with the sampled voltage of output loop part for negative-feedback signal, is input to the base stage of the transistor TR1-11 of pulse frequency modulation circuit, coating-forming voltage negative feedback loop through optocoupler OC1-11; Voltage-stabilizing output circuit is formed by connecting primarily of output winding P2-11, the rectifier diode D1-11 of transformer T1-11 and filter capacitor C3-11.
See Figure 12, it is the electrical schematic diagram of inverse-excitation type DC-DC converter embodiment three in the utility model electronic equipment standby power.In this electronic equipment standby power (hereinafter referred to as power supply): DC input exports after input filter circuit 310, main power circuit 330, output filter circuit 360, obtain DC and export; After the output of power supply has a sampling current to flow through sample circuit, error amplifying circuit, two-tube Drive and Control Circuit 340, negative feedback control is carried out to the main switch (being preferably metal-oxide-semiconductor) in main power circuit 330; Meanwhile, be connected with a soft starting circuit 320 at the output of input filter circuit 310, this soft starting circuit 320 other end is connected with two-tube Drive and Control Circuit 340 soft start function realizing power supply; Significantly, have an output short circuit protection circuit 350 in the negative feedback winding output loop in the negative feedback loop in main power circuit 330, the other end of this output short circuit protection circuit 350 is connected to two-tube Drive and Control Circuit 340.Identify in Figure 12 Is-s1, SD-dc, IS-s, GD-dc etc. four road signal to reflect the course of work of two-tube Drive and Control Circuit 340, further illustrate below in conjunction with specific implementation circuit.
See Figure 13, it is the circuit diagram of inverse-excitation type DC-DC converter embodiment four in the utility model electronic equipment standby power.This realizing circuit mainly comprises following part: input filter circuit 310, soft starting circuit 320, main power circuit 330, two-tube Drive and Control Circuit 340, output short circuit protection circuit 350, output filter circuit 360, voltage stabilizing circuit 370, wherein:
Input filter circuit 310, comprises filter capacitor C0-13, C1-13 and filter inductance L0-13, and its structure can be known π type filter circuit theory structure, does not describe in detail at this.
Soft starting circuit 320, comprises divider resistance R10-13, R13-13, R14-13, start-up capacitance C9-13 and diode D4-13.Its operation principle is for when accessing input voltage, and electric current charges to C9-13 through R10-13, and after elapsed time t=R10-13*C9-13, capacitance voltage reaches MOS threshold voltage, realizes start soft start function.
Main power circuit 330, comprises transformer input winding P1-13, exports winding P2-13, metal-oxide-semiconductor TR1-13, current-limiting resistance R5-13, export rectifier diode D1-13, realize the conversion of power supply energy, transmission and constrained input isolation.In addition, be oppositely connected to voltage-stabiliser tube Z4-13 at the grid of metal-oxide-semiconductor TR1-13, can make the grid starting resistor strangulation of metal-oxide-semiconductor TR1-13 on predetermined level.
Two-tube Drive and Control Circuit 340, comprise resistance R6-13, R9-13, R12-13, electric capacity C5-13, C12-13, the elements such as NPN type diode TR2-13, positive-negative-positive diode TR3-13, its operation principle is: the optocoupler OC1-13 conducting when output voltage is higher, make triode TR2-13, TR3-13 conducting respectively, accelerate metal-oxide-semiconductor TR1-13 and turn off.
Output short circuit protection circuit 350; it is arranged among the negative feedback loop of main power circuit 330; this output short circuit protection circuit comprises negative feedback winding P3-13, afterflow branch road, negative feedback winding leakage inductance absorbing circuit; afterflow branch road connects the Same Name of Ends of negative feedback winding P3-13, and negative feedback winding leakage inductance absorbing circuit connects the different name end of negative feedback winding P3-13.Specifically, output short circuit protection circuit 350 comprises feedback winding P3-13, resistance R1A-13, R1B-13, electric capacity C11-13, diode D3-13; This output short circuit protection circuit negative feedback winding P3-13 different name end is connected with R1A-13, R1-13; the R1A-13 other end is connected with R1B-13, C11-13; R1B-13, C11-13 other end ground connection; negative feedback winding P3-13 Same Name of Ends is connected with the negative electrode of C6-13, diode D3-13; the plus earth of diode D3-13; the C6-13 other end is connected with R11-13, the grid (G pole) of another termination metal-oxide-semiconductor of R11-13 TR1-13.The operation principle of this circuit is: when power supply output short-circuit, and R1A-13 absorbs the energy that feedback winding P3-13 leakage inductance stores fast, accelerates the damped oscillation of leakage inductance and electric capacity C11-13; In addition, R1B-13 shunts C11-13, reduces electric capacity both end voltage, thus reduces the driving voltage of metal-oxide-semiconductor.
Output filter circuit 360, comprises electric capacity C3-13, also can adopt other existing filter circuit, specifically can select by relevant technologies handbook.
Voltage stabilizing circuit 370, mainly comprises pressurizer ADJ, and it is connected to main power circuit and output short circuit protection circuit 350 and two-tube Drive and Control Circuit 340 by optocoupler OC1, does not repeat them here.
In the present embodiment; winding leakage inductance and C11-13, R1A-13 damped oscillation is fed back during output short circuit protection circuit; metal-oxide-semiconductor wink, speed was turned off; both the energy loss having decreased metal-oxide-semiconductor self additionally reduces the energy transmitted to secondary (output winding) on the former limit of transformer T1-13 (input winding), thus reaches short-circuit protection object.
Figure 14 ~ Figure 18 illustrates the circuit structure form of inverse-excitation type DC-DC converter output short circuit protection part in the utility model electronic equipment standby power, wherein: Figure 14 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment five in the utility model electronic equipment standby power; Figure 15 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment six in the utility model electronic equipment standby power; Figure 16 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment seven in the utility model electronic equipment standby power; Figure 17 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment eight in the utility model electronic equipment standby power; Figure 18 is the output short circuit protection partial circuit figure of inverse-excitation type DC-DC converter embodiment nine in the utility model electronic equipment standby power.
Be described further combined with Figure 14 ~ Figure 18 below, output short circuit protection circuit 350 part is wherein only shown, their connection is identical with Figure 13, and the identity element in the expression that wherein element number is identical and Figure 13, such as C6-13, C6-18 are identity element.
See Figure 14, Figure 15, provide other two kinds and export the inverse-excitation type DC-DC converter circuit being with short-circuit protection.The operation principle of circuit shown in they and Figure 13 is similar; its difference is only: the position of the R1A-15 in Figure 14 in the position of the R1A-14 of output short circuit protection circuit 350, Figure 15 in output short circuit protection circuit 350, changes compared with the position of the R1A-13 in output short circuit protection circuit in Figure 13 15.
See Figure 16, give the inverse-excitation type DC-DC converter circuit that another exports band short-circuit protection, the difference of itself and Figure 13 is: to eliminate in Figure 13 R1B-13 in output short circuit protection circuit 350 in Figure 16 in output short circuit protection circuit 350.The difference of its operation principle and Figure 13 is, during output short-circuit, C11-15 both end voltage does not have diverter branch, and namely C11-15 voltage is almost constant; R1A-15 short-circuit protection principle is similar with the R1A-13 in output short circuit protection circuit in Figure 13 350, repeats no more.
See Figure 17, Figure 18, provide the inverse-excitation type DC-DC converter circuit of two kinds of band short-circuit protections in addition.The operation principle of they and Figure 16 is similar; its difference is only: the position of R1A-18 in output short circuit protection circuit 350 in the position of R1A-17, Figure 18 in output short circuit protection circuit 350 in Figure 17, changes compared with the position of R1A-16 in output short circuit protection circuit in Figure 16 350.
The protective circuit part of above embodiment of the present utility model to electronic equipment standby power is improved, and the energy of this protective circuit part autophage is considerably less, thus can reduce short circuit loss further, effectively improves power-efficient.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection range of the present utility model should define with the utility model claim is as the criterion.

Claims (5)

1. the inverse-excitation type DC-DC converter circuit of an electronic equipment standby power, electronic equipment standby power comprises the electric energy access device connected successively, filter circuit of pressure-stabilizing and inverse-excitation type DC-DC converter, electric energy access device comprises solar power supply apparatus, solar power supply apparatus comprises solar cell, battery controller, storage battery and inverter, it is characterized in that, the pulse frequency modulation circuit of inverse-excitation type DC-DC converter comprises NPN type triode TR1, electric capacity C6 and electric capacity C5, resistance R11 and resistance R9, sustained diode 3 and feedback winding P3, input electricity is from the Same Name of Ends access of input winding P1, the drain electrode of the different name termination metal-oxide-semiconductor TR2 of input winding P1, the source electrode of metal-oxide-semiconductor TR2 is respectively by resistance R5 ground connection and the base stage being met triode TR2 by biasing resistor R9, and the two ends shunt capacitance C5 of biasing resistor R9, triode TR1 collector electrode connects the grid of metal-oxide-semiconductor TR2, the grounded emitter of triode TR1, feedback winding P3 Same Name of Ends connects the grid of metal-oxide-semiconductor TR2 through electric capacity C6, resistance R11, an other road of input electricity connects the grid of metal-oxide-semiconductor TR2 through soft starting circuit, benchmark amplifying circuit comprises pressurizer ADJ, so that the base stage coating-forming voltage negative feedback loop of the transistor TR1 through optocoupler OC1, pulse frequency modulation circuit, voltage-stabilizing output circuit is formed by connecting by output winding P2, the rectifier diode D1 of transformer T1 and filter capacitor C3.
2. the inverse-excitation type DC-DC converter circuit of electronic equipment standby power as claimed in claim 1, it is characterized in that, solar cell is thin-film solar cells, thin-film solar cells comprise from top to bottom set gradually the first electro-conductive glass substrate, deposit absorbent layer, resilient coating, conductive silver glue and the second electro-conductive glass substrate, extraction electrode in the first electro-conductive glass substrate and the second electro-conductive glass substrate.
3. the inverse-excitation type DC-DC converter circuit of electronic equipment standby power as claimed in claim 2, it is characterized in that, battery controller comprises charging circuit, discharge circuit, control circuit and lightning protection circuit, and charging circuit, discharge circuit and storage battery are in parallel, lightning protection circuit and storage battery series connection.
4. the inverse-excitation type DC-DC converter circuit of electronic equipment standby power as claimed in claim 3, it is characterized in that, storage battery comprises accumulator body, cell managing device, data/address bus, auxiliary power supply bus and auxiliary charging control line, and wherein the positive pole of accumulator body is connected with cell managing device respectively with negative pole; Cell managing device comprises the detection control unit be connected respectively with the positive pole of accumulator body and negative pole and the supplemental charging unit be connected respectively with negative pole with the positive pole of accumulator body, and detection control unit is connected with supplemental charging unit; Data/address bus is connected with detection control unit; Auxiliary power supply bus is connected with supplemental charging unit; Auxiliary charging control line is connected with the output of detection control unit; Detection control unit, for detecting the running status of accumulator body in real time, when the real-time voltage of accumulator body is less than threshold voltage, is charged to accumulator body by auxiliary power supply bus by supplemental charging unit.
5. the inverse-excitation type DC-DC converter circuit of electronic equipment standby power as claimed in claim 4, it is characterized in that, inverter comprises power tube driving chip and six power tubes, power tube driving chip is connected to microcontroller circuit, so that according to the pulse width modulating signal that microcontroller circuit exports, drive corresponding power tube alternate conduction and shutoff; Six power tubes are divided into three groups, and every group power control to cross streams exports, corresponding access diode between the source electrode of each power tube and drain electrode.
CN201520491043.4U 2015-07-06 2015-07-06 Formula DC -DC converter circuit is swashed to reverse side of electronic equipment standby power Expired - Fee Related CN205070590U (en)

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CN201520491043.4U CN205070590U (en) 2015-07-06 2015-07-06 Formula DC -DC converter circuit is swashed to reverse side of electronic equipment standby power

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109116173A (en) * 2018-09-12 2019-01-01 中车浦镇庞巴迪运输***有限公司 A kind of rail traffic vehicles ground detection device and detection method
CN112567615A (en) * 2018-02-14 2021-03-26 美特瑞克斯实业公司 Starter circuit for an energy harvesting circuit
CN114552992A (en) * 2022-03-22 2022-05-27 青岛汉泰智能科技有限公司 Direct-current power supply system and control method
CN115622202A (en) * 2022-12-15 2023-01-17 永安行科技股份有限公司 Energy-saving control circuit and energy-saving control method of intelligent central control power supply system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112567615A (en) * 2018-02-14 2021-03-26 美特瑞克斯实业公司 Starter circuit for an energy harvesting circuit
CN109116173A (en) * 2018-09-12 2019-01-01 中车浦镇庞巴迪运输***有限公司 A kind of rail traffic vehicles ground detection device and detection method
CN109116173B (en) * 2018-09-12 2023-09-12 中车浦镇阿尔斯通运输***有限公司 Rail transit vehicle grounding detection device and detection method
CN114552992A (en) * 2022-03-22 2022-05-27 青岛汉泰智能科技有限公司 Direct-current power supply system and control method
CN114552992B (en) * 2022-03-22 2024-01-26 青岛汉泰智能科技有限公司 Direct-current power supply system and control method
CN115622202A (en) * 2022-12-15 2023-01-17 永安行科技股份有限公司 Energy-saving control circuit and energy-saving control method of intelligent central control power supply system

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