CN202455152U - Multifunctional inverter circuit - Google Patents
Multifunctional inverter circuit Download PDFInfo
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- CN202455152U CN202455152U CN201220075264XU CN201220075264U CN202455152U CN 202455152 U CN202455152 U CN 202455152U CN 201220075264X U CN201220075264X U CN 201220075264XU CN 201220075264 U CN201220075264 U CN 201220075264U CN 202455152 U CN202455152 U CN 202455152U
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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
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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
- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model relates to a multifunctional inverter circuit which is provided with a mains supply changeover unit, an inverter unit, a direct current output unit and a detecting protection unit enabling the direct current output unit to work in a rated state. The direct current output unit is a storage battery. The multifunctional inverter circuit is further provided with a voltage limiting alarm unit for detecting voltage output by the direct current output unit, and the voltage limiting alarm unit is connected with the direct current output unit. The direct current output unit can be a solar photovoltaic battery. The multifunctional inverter circuit integrates an inversion function of the storage battery and an inversion function of the solar photovoltaic battery. Before the multifunctional inverter circuit is used, two working modes of the circuit can be set so as to meet the requirements of various occasions. The whole circuit is designed to be humanized, simplified and be low in cost and suitable for popularization in the small-range field, such as families. In addition, parts of the circuit are designed to be normalized, and the whole circuit adopts low voltage so that potential safety hazard brought by high voltage to maintenance is avoided.
Description
Technical field
The utility model relates to the inverter circuit technical field, relates in particular to a kind of multi-functional inverter circuit.
Background technology
When the conventional inversion circuit is used as ups power, introduce the inverter circuit of external superior performance, external inverter circuit integrated level is high more; Circuit structure is complicated; Cost an arm and a leg, using maintenance from installation all needs the specific service of department after sale, and general technical staff can't keep in repair voluntarily; And maintenance cost is high, and these have all increased user's use cost.Inverter circuit of the prior art is when the ups power, and after the civil power switch unit in the inverter circuit detected the civil power outage, inverter circuit became to exchange with the DC converting of storage battery output and continues to supply power to power consumption equipment; Meanwhile, user's chimes of doom also can appear pointing out in inverter circuit, and high, the longer duration of decibel of chimes of doom till chimes of doom lasts till that always civil power is normal, forms the noise of the operate as normal that influences the staff, does not meet human oriented design.And ups power must cooperate corresponding civil power switch unit in use, only detects under the situation of outage at the civil power switch unit, and ups power just can begin to make corresponding inversion work, and flexibility ratio is low, can not be adapted to various occasion.
Summary of the invention
The utility model technical problem to be solved is when the civil power power alarm, to have noise and the low problem of flexibility ratio to existing inverter circuit, provides a kind of and not only can be used as the storage battery inversion but also can be used for the multi-functional inverter circuit photovoltaic cell inversion, that have the pressure limiting warning function.
For addressing the above problem, the technical scheme of the utility model is:
A kind of multi-functional inverter circuit; Be provided with a civil power switch unit, an inversion unit, a direct current output unit and make the direct current output unit be operated in the detection protected location of rated condition; Said civil power switch unit links to each other with inversion unit respectively with the detection protected location; Inversion unit links to each other with the direct current output unit respectively with the detection protected location; Said direct current output unit is a storage battery, said it also be provided with the pressure limiting alarm unit that is used to detect direct current output unit output voltage, the pressure limiting alarm unit links to each other with the direct current output unit; Said direct current output unit can also be solar-energy photo-voltaic cell.
The multi-functional inverter circuit of the utility model adopts modularized design; Be between each component units of integrated circuit only the input/output interface through minority link to each other; The repair and maintenance of each modular unit is convenient; And circuit is provided with the pressure limiting alarm unit, and the pressure limiting alarm unit is made different responses according to the different output voltages of direct current output unit, in order to inform the real-time working situation of user's direct current output unit; Problem, the problem includes: the problem of warning noise has met the design of hommization more when having avoided inverter circuit warning in the past.When multi-functional inverter circuit is worked as the storage battery inversion, after the civil power switch unit detects the civil power outage, start inversion unit, pressure limiting this moment alarm unit is carried out corresponding actions according to the output voltage of direct current output unit.When multi-functional inverter circuit is used as the photovoltaic cell inversion; Close the civil power switch unit, multi-functional inverter circuit carries out inversion work under the enough situation of photovoltaic cell capacity reserve, when capacity reserve is not enough; Switch to mains-supplied, be adapted to more inversion occasion more flexibly.
Preferably, said pressure limiting alarm unit is provided with alarm signal prompting device and control circuit, and control circuit links to each other with the direct current output unit, and control circuit links to each other with alarm signal prompting device.When multi-functional inverter circuit is launched; The alarm free noise, when only reaching set limit and putting standard, the pressure limiting alarm unit just can start alarm signal; And the power of alarm signal and frequency are all set according to the output voltage of direct current output unit; So that notify the user to carry out to close the preparation of power consumption equipment, the inconvenience of having avoided long-time warning to bring meets human oriented design.When the pressure limiting alarm unit detects minimum spacing unmanned shutdown, by detecting protected location output forced shutdown signal.
Preferably; Said alarm signal prompting device is buzzer H1 and light-emitting diode L1, and said control circuit is provided with triode Q1 and triode Q2, the collector electrode of triode Q1 through resistance R 24 be provided with one be used to detect direct current output unit output voltage test side a; Test side a links to each other with the direct current output unit; Be connected with voltage stabilizing didoe W3 and resistance R 22 between the base stage of test side a and triode Q1, voltage stabilizing didoe W3 by the base stage of triode Q1 to test side a forward conduction, the grounded emitter of triode Q1; The base stage of triode Q1 is through resistance R 23 ground connection, and the collector electrode of triode Q1 is through capacitor C 16 ground connection; The collector electrode of triode Q1 links to each other with the base stage of triode Q2 through resistance R 25, is connected with buzzer H1 between the collector electrode of triode Q2 and the test side a, and the emitter of triode Q2 is through light-emitting diode L1 and resistance R 26 ground connection.Detect protected location through four-operational amplifier LM324 accomplish the direct current output unit overcurrent, cross put, the function of overheated detection and forced shutdown, circuit design is simple, and is with low cost, is convenient to maintenance.
Preferably; Said inversion unit comprises the peripheral circuit of chip SG3525 and chip SG3525 operate as normal; Be connected with FET F1 and FET F2 on two pulse output ends of chip SG3525 respectively, said FET F1 and FET F2 are connected into the loop through primary coil N1 and primary coil N2 and direct current output unit respectively; With primary coil N1 and corresponding secondary coil N3 and the secondary coil N4 of being provided with of primary coil N2, the output of secondary coil N3 is the direct current test side of direct current output unit, and the output of secondary coil N4 is the output of alternating current after the inversion; The locking control end of chip SG3525 links to each other with the civil power switch unit with the detection protected location respectively.The circuit design of inversion unit is simple, has used common electronic devices and components on the market to accomplish the function of inversion cleverly, has avoided having reduced user's use cost because of the influence to price factor such as electronic devices and components monopolization; And the integrated level of circuit is low, and the connection between each electronic devices and components is simple, and general technical staff all can keep in repair, user-friendly and maintenance.
Preferably; Said inversion unit also is provided with the pressure limiting control circuit; The pressure limiting control circuit comprises resistance R 9, resistance R 10, voltage stabilizing didoe W1 and capacitor C 7; First terminals of said resistance R 9 link to each other with the dc power supply terminal of chip SG3525, and second terminals of resistance R 9 link to each other with the direct current output unit, and first terminals of resistance R 9 are through capacitor C 7 ground connection; The two ends of capacitor C 7 are parallel with the series circuit of voltage stabilizing didoe W1 and resistance R 10, and voltage stabilizing didoe W1 is by the first terminals forward conduction of earth terminal to resistance R 9.The pressure limiting control circuit is as having pressure limiting shutdown function, as the maltilevel security guarantee of inverter circuit work.
Preferably, said detection protected location comprised putting and detected protective circuit, over-current detection protective circuit and overheated detection protective circuit.Cross and put the setting that detects protective circuit, over-current detection protective circuit and overheated detection protective circuit; Guaranteed that the direct current output unit is operated in rated condition; In case when detecting the direct current output unit and belonging to non-set condition; Detect protected location output forced shutdown signal, the maltilevel security guarantee is provided.
Preferably, said detection protected location is provided with a four-operational amplifier LM324, and the positive power source terminal of LM324 links to each other with the positive pole of direct current output unit, negative power end ground connection, and the positive pole of direct current output unit is through capacitor C 19 ground connection; Said mistake is put the detection protective circuit and is comprised first operational amplifier LM1 and the peripheral circuit thereof, and the over-current detection protective circuit comprises the 3rd operational amplifier LM3 and peripheral circuit thereof, and overheated detection protective circuit comprises second operational amplifier LM2 and the peripheral circuit thereof; The normal phase input end of the normal phase input end of the said first operational amplifier LM1, the second operational amplifier LM2 all links to each other with the inverting input of four-operational amplifier LM4; After linking to each other, the output of the output of the output of the first operational amplifier LM1, the second operational amplifier LM2 and the 3rd operational amplifier LM3 links to each other with the normal phase input end of four-operational amplifier LM4 through resistance R 28; The normal phase input end of four-operational amplifier LM4 is through electrochemical capacitor C17 ground connection; Be connected with diode D6 between the normal phase input end of four-operational amplifier LM4 and the output of four-operational amplifier LM4; Diode D6 is through resistance R 27 ground connection, and the output of four-operational amplifier LM4 links to each other with the locking control end of chip SG3525; The inverting input of the inverting input of the said first operational amplifier LM1 and the second operational amplifier LM2 links to each other with the positive pole of resistance R 36 with the direct current output unit through resistance R 35 respectively; The inverting input of the first operational amplifier LM1 is also through resistance R 34 ground connection; The inverting input of the second operational amplifier LM2 is also through thermistor RT ground connection; Be connected with variable resistor R29 between the output of the inverting input of said the 3rd operational amplifier LM3 and the 3rd operational amplifier LM3; The scalable end of variable resistor R29 links to each other with the inverting input of the 3rd operational amplifier LM3; The scalable end of variable resistor R29 is through resistance R 30 ground connection; The normal phase input end of the 3rd operational amplifier LM3 is through capacitor C 18 ground connection, and the normal phase input end of the 3rd operational amplifier LM3 links to each other with the direct current test side through variable resistor R31, and the scalable end of variable resistor R31 links to each other with the normal phase input end of the 3rd operational amplifier LM3.
Preferably; Said civil power switch unit is provided with Yi Qiaodui; Be connected with low-voltage AC on the input of bridge heap, the output of bridge heap links to each other with the locking control end of chip SG3525, is in series with resistance R 18, K switch 2, resistance R 21, voltage stabilizing didoe W2 and diode D5 successively between the output of bridge heap and the locking control end of chip SG3525; Voltage stabilizing didoe W2 piles the direction forward conduction by the locking control end to bridge; Diode D5 and voltage stabilizing didoe W2 anti-phase, an end of K switch 2 are through capacitor C 15 ground connection, and the other end is through resistance R 20 and relay J K1 ground connection; Be parallel with the series circuit of light-emitting diode L2 and resistance R 19 on the series circuit of resistance R 20 and relay J K, be parallel with electrochemical capacitor C14 on the series circuit of light-emitting diode L2 and resistance R 19.
The utility model is combined into one storage battery invert function and solar-energy photo-voltaic cell invert function; Make multi-functional inverter circuit have storage battery inversion mode of operation and solar-energy photo-voltaic cell inversion mode of operation simultaneously; Before use; Can two kinds of mode of operations of circuit be provided with, to adapt to the needs of multiple occasion.Entire circuit designs hommization more, oversimplifies low cost; Be very suitable for popularizing of field among a small circle such as family, and the each several part circuit design routinizes in the utility model; Entire circuit is selected low tension, the potential safety hazard of having avoided high-tension electricity to bring to maintenance.
Description of drawings
Fig. 1 is the structural principle block diagram of the multi-functional inverter circuit of the utility model.
Fig. 2 is the circuit theory diagrams of the multi-functional inverter circuit of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment further explain the utility model, but the protection range of the utility model is not limited to this.
With reference to Fig. 1, the multi-functional inverter circuit of the utility model is provided with civil power switch unit, inversion unit, direct current output unit, pressure limiting alarm unit and detects protected location.The civil power switch unit links to each other with inversion unit respectively with the detection protected location, and inversion unit links to each other with the direct current output unit respectively with the detection protected location, and the pressure limiting alarm unit links to each other with the direct current output unit.The multi-functional inverter circuit of the utility model can be set to storage battery inversion mode of operation or solar-energy photo-voltaic cell mode of operation, can set according to actual needs.Wherein, the direct current output unit is general storage battery or batteries, also can be photovoltaic cell or the photovoltaic module that is used for storage power in the solar-energy photo-voltaic cell.
With reference to Fig. 2, said inversion unit comprises the peripheral circuit of chip SG3525 and chip SG3525 operate as normal.The grid that is being connected FET F1 and FET F2 on the two pulse output end pin ones 4 of chip SG3525 and the pin one 1 respectively through resistance R 11 with resistance R 12; The grid of F1 is through resistance R 13 ground connection; The grid of F2 is through resistance R 14 ground connection; The negative pole of the source electrode of FET F1 and FET F2 and direct current output unit is ground connection together; The drain electrode of FET F1 and FET F2 links to each other with primary coil N2 with primary coil N1 respectively, and the other end of primary coil N1 and primary coil N2 links to each other with the positive pole of direct current output unit, forms two independently series loops; Be parallel with diode D2 and diode D3 between the drain electrode of FET F1 and FET F2 and the source electrode respectively, be parallel with the series circuit of capacitor C 11 and resistance R 15 on the diode D2, be parallel with the series circuit of capacitor C 12 and resistance R 16 on the diode D3.With primary coil N1 and corresponding secondary coil N3 and the secondary coil N4 of being provided with of primary coil N2; The output of secondary coil N3 is connected with the bridge heap; The output of bridge heap is successively through resistance R 8 and variable resistor R6; The other end of variable resistor R6 is the direct current test side b of direct current output unit, is labeled as alphabetical b in the drawings, and the common port of resistance R 8 and variable resistor R6 is through electrochemical capacitor C6 ground connection; The output of secondary coil N4 is the output of alternating current after the inversion, is used to provide equipment to use power supply.
The peripheral circuit of chip SG3525 operate as normal is the circuit connecting relation on each pin; The inverting input pin one of SG3525 and in-phase input end pin two are respectively through resistance R 2 and resistance R 3 ground connection; The inverting input pin one is through capacitor C 1 ground connection, and the inverting input pin one links to each other with direct current test side b; The in-phase input end pin two links to each other with reference voltage terminal pin one 6 through resistance R 7; Pin 3 is unsettled subsequent use with pin 4; Oscillator end pin 5 links to each other with discharge end pin 7 through resistance R 4; Oscillator end pin 5 is also through capacitor C 2 ground connection, and outer meeting resistance end pin 6 is through resistance R 5 ground connection, and soft start end pin 8 is through electrochemical capacitor C3 ground connection; Direct current test side b links to each other with compensation end pin 9 with capacitor C 4 through resistance R 1 successively, and compensation end pin 9 is through capacitor C 5 ground connection; Locking control end pin one 0 links to each other with the detection protected location with the civil power switch unit; Earth terminal pin one 2 ground connection; Power end pin one 3 links to each other with the positive pole of direct current output unit with switch JK through positive supply voltage stabilizing circuit 7812, diode D1, resistance R 9, K switch 1 successively; Positive supply voltage stabilizing circuit 7812 passes through electrochemical capacitor C9 ground connection with the common port of power end pin one 3; Positive supply voltage stabilizing circuit 7812 and diode D1 common port through electrochemical capacitor C10 ground connection, the 3rd terminals ground connection of positive supply voltage stabilizing circuit 7812, reference voltage terminal pin one 6 is through electrochemical capacitor C8 ground connection.
Said pressure limiting control circuit comprises resistance R 9, resistance R 10, voltage stabilizing didoe W1 and capacitor C 7; First terminals of said resistance R 9 link to each other with the dc power supply terminal pin one 5 of chip SG3525; Second terminals of resistance R 9 link to each other with the common port of positive supply voltage stabilizing circuit 7812 with diode D1; First terminals of resistance R 9 are through capacitor C 7 ground connection; The two ends of capacitor C 7 are parallel with the series circuit of voltage stabilizing didoe W1 and resistance R 10, and voltage stabilizing didoe W1 is by the first terminals forward conduction of earth terminal to resistance R 9.The pressure limiting control circuit is as having a pressure limiting shutdown function, as the dual safety guarantee of inverter circuit work.
Said detection protected location comprised puts detection protective circuit, over-current detection protective circuit and overheated detection protective circuit.Cross and put the setting that detects protective circuit, over-current detection protective circuit and overheated detection protective circuit; Guaranteed that storage battery and solar-energy photo-voltaic cell are operated in rated condition; In case when detecting the direct current output unit and belonging to non-set condition; Detect protected location output forced shutdown signal, the maltilevel security guarantee is provided.Said detection protected location is provided with a four-operational amplifier LM324, and the positive power source terminal of LM324 links to each other with the positive pole of direct current output unit, negative power end ground connection, and the positive pole of direct current output unit is through capacitor C 19 ground connection.Said mistake is put the detection protective circuit and is comprised first operational amplifier LM1 and the peripheral circuit thereof, and the over-current detection protective circuit comprises the 3rd operational amplifier LM3 and peripheral circuit thereof, and overheated detection protective circuit comprises second operational amplifier LM2 and the peripheral circuit thereof.
Wherein, The normal phase input end of the normal phase input end of the first operational amplifier LM1, the second operational amplifier LM2 all links to each other with the inverting input of four-operational amplifier LM4; The inverting input of LM4 links to each other with the in-phase input end pin two of SG3525, with this reference voltage is provided.The output of the output of the output of the first operational amplifier LM1, the second operational amplifier LM2 and the 3rd operational amplifier LM3 links to each other with the normal phase input end of four-operational amplifier LM4 through resistance R 28 after linking to each other through diode D8, diode D9 and diode D7 respectively; The normal phase input end of four-operational amplifier LM4 is through electrochemical capacitor C17 ground connection; Be connected with diode D6 between the normal phase input end of four-operational amplifier LM4 and the output of four-operational amplifier LM4; Diode D6 is through resistance R 27 ground connection, and the output of four-operational amplifier LM4 links to each other with the locking control end of chip SG3525.The inverting input of the inverting input of the said first operational amplifier LM1 and the second operational amplifier LM2 links to each other with the positive pole of resistance R 36 with the direct current output unit through resistance R 35 respectively; The inverting input of the first operational amplifier LM1 is also through resistance R 34 ground connection, and the output of LM1 is through light-emitting diode L3 ground connection.The inverting input of the second operational amplifier LM2 is also through thermistor RT ground connection; The output of LM2 is successively through light-emitting diode L4 and resistance R 37 ground connection; Also linking to each other with the base stage of triode Q3 of the output of LM2 through resistance R 38; The collector electrode of triode Q3 links to each other with the positive pole of direct current output unit through the motor M that is used for drive fan, is parallel with capacitor C 20 on the motor M.Be connected with variable resistor R29 between the output of the inverting input of said the 3rd operational amplifier LM3 and the 3rd operational amplifier LM3; The scalable end of variable resistor R29 links to each other with the inverting input of the 3rd operational amplifier LM3; The scalable end of variable resistor R29 is through resistance R 30 ground connection; The normal phase input end of the 3rd operational amplifier LM3 is through capacitor C 18 ground connection; The normal phase input end of the 3rd operational amplifier LM3 links to each other with direct current test side b through variable resistor R31, and the scalable end of variable resistor R31 links to each other with the normal phase input end of the 3rd operational amplifier LM3, and the output of LM3 is through light-emitting diode L5 ground connection.Detect protected location through four-operational amplifier LM324 accomplish the direct current output unit overcurrent, cross put, the function of overheated detection and forced shutdown, circuit design is simple, and is with low cost, is convenient to maintenance.
Said pressure limiting alarm unit links to each other with the direct current output unit, and the pressure limiting alarm unit is provided with alarm signal prompting device and control circuit, and control circuit links to each other with the direct current output unit, control circuit and signal prompt device control connection.Alarm signal prompting device is buzzer H1 or light-emitting diode L1; Said control circuit is provided with triode Q1 and triode Q2; The collector electrode of triode Q1 through resistance R 24 be provided with one be used to detect direct current output unit output voltage test side a, test side a links to each other with the common port of positive supply voltage stabilizing circuit 7812 with diode D1, is connected with voltage stabilizing didoe W3 and resistance R 22 between the base stage of test side a and triode Q1; Voltage stabilizing didoe W3 by the base stage of triode Q1 to test side a forward conduction; The grounded emitter of triode Q1, the base stage of triode Q1 are through resistance R 23 ground connection, and the collector electrode of triode Q1 is through capacitor C 16 ground connection; The collector electrode of triode Q1 links to each other with the base stage of triode Q2 through resistance R 25, is connected with buzzer H1 between the collector electrode of triode Q2 and the test side a, and the emitter of triode Q2 is through light-emitting diode L1 and resistance R 26 ground connection.
Said civil power switch unit is provided with Yi Qiaodui; Be connected with low-voltage AC on the input of bridge heap; The output of bridge heap links to each other with the locking control end of chip SG3525; Be in series with resistance R 18, K switch 2, resistance R 21, voltage stabilizing didoe W2 and diode D5 successively between the output of bridge heap and the locking control end of chip SG3525, voltage stabilizing didoe W2 piles direction forward conduction, diode D5 and voltage stabilizing didoe W2 anti-phase by the locking control end to bridge; One end of K switch 2 is through capacitor C 15 ground connection; The other end is parallel with the series circuit of light-emitting diode L2 and resistance R 19 through resistance R 20 and relay J K1 ground connection on the series circuit of resistance R 20 and relay J K, be parallel with electrochemical capacitor C14 on the series circuit of light-emitting diode L2 and resistance R 19.
When multi-functional inverter circuit in storage battery inversion mode of operation following time, the working cell of launching in the multi-functional inverter circuit is civil power switch unit, inversion unit, storage battery, pressure limiting alarm unit and detects protected location.Close switch K2, K switch 1 and switch JK, multi-functional function inverter circuit can be operated in the normal standby state.After the civil power switch unit detected the civil power outage, relay J K1 was closed, and inversion work begins, and the mistake that detects simultaneously in the protected location is put detection protective circuit, over-current detection protective circuit and the startup of overheated detection protective circuit, detects storage battery in real time.At this moment; Under the control of pressure limiting alarm unit; Multi-functional function inverter circuit alarm free prompt tone, but when the capacity of storage battery reached preset value, the pressure limiting alarm unit starts reported to the police; And the power of alarm signal and frequency are all set according to the output voltage of direct current output unit, so that notify the user to carry out to close the preparation of power consumption equipment; At this moment; If unmanned shutdown; The capacity of storage battery reaches set point again and starts at 10% o'clock of the back total capacity as reaching to report to the police; Four-operational amplifier LM32 can export the forced shutdown signal and give locking control end pin one 0, and locking control end pin one 0 makes multi-functional inverter circuit be in the soft-off state, and inversion work stops.If four-operational amplifier LM32 breaks down, the pressure limiting control circuit can start the function of pressure limiting shutdown according to battery tension, and inversion work stops, and can connect voluntarily and charge when inversion work stops afterwards civil power.When the civil power switch unit detected the arrival civil power, relay J K1 broke off, and inversion work stops, and can connect voluntarily and charge when coming civil power.The charging circuit of above-mentioned storage battery, charging circuit switching belong to prior art, repeat no more at this.
During storage battery inversion mode of operation, the function of double soft-off through the pressure limiting control circuit with detect protected location and realize, still; If the civil power switch unit breaks down, belong to frequent activation member like relay J K1, damage easily; Just in case after damaging, also have triple shutdown functions.Triple shutdown functions are to be initiated by voltage stabilizing didoe W2 in the civil power switch unit, and voltage stabilizing didoe W2 exports the needed voltage of locking control end pin one 0 forced shutdown, and send into through diode D5, stop inversion work, the stability of better guarantee circuit.
When multi-functional inverter circuit under solar-energy photo-voltaic cell inversion mode of operation, close the civil power switch unit or cut off the input of civil power, if the needs of saving electricity are arranged, also can close the pressure limiting alarm unit, can set by user's needs.If the photovoltaic cell energy stored is enough accomplished inversion output, then with the power supply circuits of inverter circuit as equipment; When the photovoltaic cell energy stored is not enough, then, can supply power to equipment by civil power through switching.In this course of work, the pressure limiting alarm unit is worked with the detection protected location simultaneously, and working method is identical with above-mentioned storage battery inversion mode of operation, if the pressure limiting alarm unit is not worked, does not then consider its pressure limiting warning function.
The utility model is combined into one storage battery invert function and solar-energy photo-voltaic cell invert function; Make multi-functional inverter circuit have storage battery inversion mode of operation and solar-energy photo-voltaic cell inversion mode of operation simultaneously; Before use; Can switch two kinds of mode of operations of circuit, to adapt to the needs of multiple occasion.
Claims (8)
1. multi-functional inverter circuit; Be provided with a civil power switch unit, an inversion unit, a direct current output unit and make the direct current output unit be operated in the detection protected location of rated condition; Said civil power switch unit links to each other with inversion unit respectively with the detection protected location; Inversion unit links to each other with the direct current output unit respectively with the detection protected location, and said direct current output unit is a storage battery, it is characterized in that; Said it also be provided with the pressure limiting alarm unit that is used to detect direct current output unit output voltage, the pressure limiting alarm unit links to each other with the direct current output unit; Said direct current output unit can also be solar-energy photo-voltaic cell.
2. multi-functional inverter circuit according to claim 1 is characterized in that, said pressure limiting alarm unit is provided with alarm signal prompting device and control circuit, and control circuit links to each other with the direct current output unit, and control circuit links to each other with alarm signal prompting device.
3. multi-functional inverter circuit according to claim 2; It is characterized in that; Said alarm signal prompting device is buzzer H1 and light-emitting diode L1, and said control circuit is provided with triode Q1 and triode Q2, the collector electrode of triode Q1 through resistance R 24 be provided with one be used to detect direct current output unit output voltage test side a; Test side a links to each other with the direct current output unit; Be connected with voltage stabilizing didoe W3 and resistance R 22 between the base stage of test side a and triode Q1, voltage stabilizing didoe W3 by the base stage of triode Q1 to test side a forward conduction, the grounded emitter of triode Q1; The base stage of triode Q1 is through resistance R 23 ground connection, and the collector electrode of triode Q1 is through capacitor C 16 ground connection; The collector electrode of triode Q1 links to each other with the base stage of triode Q2 through resistance R 25, is connected with buzzer H1 between the collector electrode of triode Q2 and the test side a, and the emitter of triode Q2 is through light-emitting diode L1 and resistance R 26 ground connection.
4. according to claim 2 or 3 described multi-functional inverter circuits; It is characterized in that; Said inversion unit comprises the peripheral circuit of chip SG3525 and chip SG3525 operate as normal; Be connected with FET F1 and FET F2 on two pulse output ends of chip SG3525 respectively, said FET F1 and FET F2 are connected into the loop through primary coil N1 and primary coil N2 and direct current output unit respectively; With primary coil N1 and corresponding secondary coil N3 and the secondary coil N4 of being provided with of primary coil N2, the output of secondary coil N3 is the direct current test side of direct current output unit, and the output of secondary coil N4 is the output of alternating current after the inversion; The locking control end of chip SG3525 links to each other with the civil power switch unit with the detection protected location respectively.
5. multi-functional inverter circuit according to claim 4; It is characterized in that; Said inversion unit also is provided with the pressure limiting control circuit, and the pressure limiting control circuit comprises resistance R 9, resistance R 10, voltage stabilizing didoe W1 and capacitor C 7, and first terminals of said resistance R 9 link to each other with the dc power supply terminal of chip SG3525; Second terminals of resistance R 9 link to each other with the direct current output unit; First terminals of resistance R 9 are through capacitor C 7 ground connection, and the two ends of capacitor C 7 are parallel with the series circuit of voltage stabilizing didoe W1 and resistance R 10, and voltage stabilizing didoe W1 is by the first terminals forward conduction of earth terminal to resistance R 9.
6. multi-functional inverter circuit according to claim 5 is characterized in that, said detection protected location comprised puts detection protective circuit, over-current detection protective circuit and overheated detection protective circuit.
7. multi-functional inverter circuit according to claim 6; It is characterized in that said detection protected location is provided with a four-operational amplifier LM324, the positive power source terminal of LM324 links to each other with the positive pole of direct current output unit; Negative power end ground connection, the positive pole of direct current output unit is through capacitor C 19 ground connection; Said mistake is put the detection protective circuit and is comprised first operational amplifier LM1 and the peripheral circuit thereof, and the over-current detection protective circuit comprises the 3rd operational amplifier LM3 and peripheral circuit thereof, and overheated detection protective circuit comprises second operational amplifier LM2 and the peripheral circuit thereof;
The normal phase input end of the normal phase input end of the said first operational amplifier LM1, the second operational amplifier LM2 all links to each other with the inverting input of four-operational amplifier LM4; After linking to each other, the output of the output of the output of the first operational amplifier LM1, the second operational amplifier LM2 and the 3rd operational amplifier LM3 links to each other with the normal phase input end of four-operational amplifier LM4 through resistance R 28; The normal phase input end of four-operational amplifier LM4 is through electrochemical capacitor C17 ground connection; Be connected with diode D6 between the normal phase input end of four-operational amplifier LM4 and the output of four-operational amplifier LM4; Diode D6 is through resistance R 27 ground connection, and the output of four-operational amplifier LM4 links to each other with the locking control end of chip SG3525; The inverting input of the inverting input of the said first operational amplifier LM1 and the second operational amplifier LM2 links to each other with the positive pole of resistance R 36 with the direct current output unit through resistance R 35 respectively; The inverting input of the first operational amplifier LM1 is also through resistance R 34 ground connection; The inverting input of the second operational amplifier LM2 is also through thermistor RT ground connection; Be connected with variable resistor R29 between the output of the inverting input of said the 3rd operational amplifier LM3 and the 3rd operational amplifier LM3; The scalable end of variable resistor R29 links to each other with the inverting input of the 3rd operational amplifier LM3; The scalable end of variable resistor R29 is through resistance R 30 ground connection; The normal phase input end of the 3rd operational amplifier LM3 is through capacitor C 18 ground connection, and the normal phase input end of the 3rd operational amplifier LM3 links to each other with the direct current test side through variable resistor R31, and the scalable end of variable resistor R31 links to each other with the normal phase input end of the 3rd operational amplifier LM3.
8. multi-functional inverter circuit according to claim 7; It is characterized in that said civil power switch unit is provided with Yi Qiaodui, be connected with low-voltage AC on the input of bridge heap; The output of bridge heap links to each other with the locking control end of chip SG3525; Be in series with resistance R 18, K switch 2, resistance R 21, voltage stabilizing didoe W2 and diode D5 successively between the output of bridge heap and the locking control end of chip SG3525, voltage stabilizing didoe W2 piles direction forward conduction, diode D5 and voltage stabilizing didoe W2 anti-phase by the locking control end to bridge; One end of K switch 2 is through capacitor C 15 ground connection; The other end is parallel with the series circuit of light-emitting diode L2 and resistance R 19 through resistance R 20 and relay J K1 ground connection on the series circuit of resistance R 20 and relay J K, be parallel with electrochemical capacitor C14 on the series circuit of light-emitting diode L2 and resistance R 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220075264XU CN202455152U (en) | 2012-03-02 | 2012-03-02 | Multifunctional inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220075264XU CN202455152U (en) | 2012-03-02 | 2012-03-02 | Multifunctional inverter circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202455152U true CN202455152U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220075264XU Withdrawn - After Issue CN202455152U (en) | 2012-03-02 | 2012-03-02 | Multifunctional inverter circuit |
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| CN (1) | CN202455152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593948A (en) * | 2012-03-02 | 2012-07-18 | 杭州苏士数码锁业有限公司 | Multifunctional inverting circuit |
-
2012
- 2012-03-02 CN CN201220075264XU patent/CN202455152U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593948A (en) * | 2012-03-02 | 2012-07-18 | 杭州苏士数码锁业有限公司 | Multifunctional inverting circuit |
| CN102593948B (en) * | 2012-03-02 | 2014-07-16 | 杭州苏士数码锁业有限公司 | Multifunctional inverting circuit |
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