CN104935043A - Photovoltaic power supply device, photovoltaic air-conditioning system and automobile - Google Patents
Photovoltaic power supply device, photovoltaic air-conditioning system and automobile Download PDFInfo
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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
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- 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 invention discloses a photovoltaic power supply device, a photovoltaic air-conditioning system and an automobile. The photovoltaic power supply device comprises a photovoltaic power generation module, a direct current conversion circuit, a direct current output bus, a storage battery module, a duty ratio regulating circuit and a pulse signal generator, wherein an input end of the direct current conversion circuit is connected with an output end of the photovoltaic power generation module; an output end of the direct current conversion circuit outputs via the direct current bus; a charging and discharging end of the storage battery module is connected with the direct current bus; an input end of the duty ratio regulating circuit is connected with the output end of the photovoltaic power generation module; the duty ratio regulating circuit samples voltage and current of the output end of the photovoltaic power generation module to output a duty ratio corresponding to a maximum power point; and the pulse signal generator receives the duty ratio output by the duty ratio regulating circuit, generates a corresponding pulse control signal according to the duty ratio, and controls work of the direct current conversion circuit. With the adoption of the technical scheme, the charging speed of the storage battery module and a utilization ratio of power generation capacity of the photovoltaic power generation module are increased, and energy source waste is reduced.
Description
Technical field
The present invention relates to field of photovoltaic technology, particularly a kind of photovoltaic power supply device, PV air-conditioner system and automobile.
Background technology
Sun in summer scorch can by automobile cab become very hot, especially stop after, if there is no air-conditioning, be difficult to have a rest in driver's cabin.At present, most automobile all carries air-conditioning, and the air-conditioning carried drives work by automobile engine oil firing, between the car down-time period, engine can not stop, and causes unnecessary waste, particularly for high-powered lorry and trailer, start separately on-board air conditioner fuel consumption larger.
In order to solve the problem, vehicle-mounted photovoltaic air-conditioning system is arisen at the historic moment, and is powered, thus solve above-mentioned problem by photovoltaic battery panel (i.e. photovoltaic generating module) generating to vehicle-mounted air-conditioning.PV air-conditioner system by day time, by photovoltaic battery panel generate electricity charging to the battery module of PV air-conditioner system (storage battery of automobile can be comprised), use for night; But, the charging scheme of existing PV air-conditioner system has just simply added at photovoltaic battery panel output the diode preventing from filling, the output most of the time of photovoltaic battery panel is not operated on maximum power point (mpp), cause the utilance of photovoltaic battery panel energy output lower, battery module charging is slow, and the waste of the energy.
Summary of the invention
Main purpose of the present invention is to provide a kind of photovoltaic power supply device, is intended to make photovoltaic generating module be operated in maximum power point, thus promotes the utilance of photovoltaic generating module energy output and the charging rate of battery module, makes full use of the energy.
For achieving the above object, the photovoltaic power supply device that the present invention proposes, comprises photovoltaic generating module, DC transfer circuit, direct current output bus, battery module, duty ratio adjusting circuit and pulse signal generator, wherein:
The input of described DC transfer circuit connects the output of described photovoltaic generating module, and the output of described DC transfer circuit exports through DC bus;
The charge-discharge end of described battery module connects described DC bus;
The input of described duty ratio adjusting circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling, and the duty ratio corresponding according to the voltage and current Maximum Power Output point sampled; The duty ratio input of described pulse signal generator connects the output of described duty ratio adjusting circuit, the output of described pulse signal generator connects the controlled end of described DC transfer circuit, described pulse signal generator receives the duty ratio that described duty ratio adjusting circuit exports, and generate corresponding pulse control signal according to described duty ratio, control the work of described DC transfer circuit.
Preferably, described duty ratio adjusting circuit comprises the first sample circuit, MPPT maximum power point tracking controller, the first comparable chip and duty cycle conversion circuit, the input of described first sample circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling; The voltage output end of described first sample circuit exports the voltage extremely described MPPT maximum power point tracking controller sampled, and the current output terminal of described first sample circuit exports the electric current extremely described MPPT maximum power point tracking controller sampled; Wherein,
The voltage and current received followed the tracks of by described MPPT maximum power point tracking controller, with the reference voltage that Maximum Power Output point is corresponding; The first input end of described first comparable chip connects the output of described MPPT maximum power point tracking controller, second input of described first comparable chip connects the voltage output end of described first sample circuit, and the output of described first comparable chip connects the input of described duty cycle conversion circuit; Described first comparable chip compares the voltage that its first input end and the second input receive, and with output voltage deviation to described duty cycle conversion circuit, described duty cycle conversion circuit exports corresponding duty ratio according to the voltage deviation received.
Preferably, described duty ratio adjusting circuit comprises the first sample circuit, MPPT maximum power point tracking controller, the first comparable chip and duty cycle conversion circuit, the input of described first sample circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling; The voltage output end of described first sample circuit exports the voltage extremely described MPPT maximum power point tracking controller sampled, and the current output terminal of described first sample circuit exports the electric current extremely described MPPT maximum power point tracking controller sampled; Wherein,
The voltage and current received followed the tracks of by described MPPT maximum power point tracking controller, with the reference current that Maximum Power Output point is corresponding; The first input end of described first comparable chip connects the output of described MPPT maximum power point tracking controller, and the second input of described first comparable chip connects the current output terminal of described first sample circuit; Described first comparable chip compares the electric current that its first input end and the second input receive, and with output current deviation to described duty cycle conversion circuit, described duty cycle conversion circuit exports corresponding duty ratio according to the voltage deviation received.
Preferably, described duty cycle conversion circuit comprises the first pi controller, the input of described first pi controller is the input of described duty cycle conversion circuit, and the output of described first pi controller is the output of described duty cycle conversion circuit; The signal of telecommunication that described first pi controller receives according to its input, exports corresponding duty ratio.
Preferably, described duty cycle conversion circuit comprises the second pi controller, second comparable chip, second sample circuit and the 3rd pi controller, the input of described second pi controller is the input of described duty cycle conversion circuit, the output of described second pi controller connects the first input end of described second comparable chip, the electric current of the output of DC transfer circuit described in described second sampling circuit samples also outputs to the second input of described second comparable chip, the output of described second comparable chip connects the input of described 3rd pi controller, the output of described 3rd pi controller is the output of described duty cycle conversion circuit,
The signal of telecommunication that described second pi controller receives according to its input exports reference current accordingly to export described DC transfer circuit, the electric current that described output reference current and described second sample circuit export compares and obtains current deviation by described second comparable chip, described 3rd pi controller, according to the current deviation received, exports corresponding duty ratio.
Preferably, described duty ratio adjusting circuit also comprises signal switching module, 3rd sample circuit, state-of-charge monitoring modular and charging curve planning module, the voltage and current of the charge-discharge end of battery module described in described 3rd sampling circuit samples, and output to described state-of-charge monitoring modular, described state-of-charge monitoring modular is according to the voltage and current received, show that the state-of-charge of described battery module exports described charging curve planning module to, and whether reach predetermined threshold value according to the state-of-charge of described storage battery and export and control signal to described signal switching module accordingly,
Described charging curve planning module is according to the state-of-charge received, export the first input end of corresponding reference current to described signal switching module, second input of described signal switching module connects the output of described second pi controller, and the output of described signal switching module connects the first input end of described second comparable chip; Described state-of-charge monitoring modular, when the state-of-charge of described storage battery reaches described predetermined threshold value, exports the first control signal and is communicated with output with the first input end controlling described signal switching module; Described state-of-charge monitoring modular, when the state-of-charge of described storage battery does not reach described predetermined threshold value, exports the second control signal and is communicated with output with the second input controlling described signal switching module.
Preferably, described DC transfer circuit is the one in semi-bridge inversion full-bridge rectification topological circuit, semi-bridge inversion Half bridge rectifier topological circuit, full-bridge LLC resonance inversion full-bridge rectification topological circuit, interleaving inverse excitation type DC converting topological circuit, push-pull type DC converting topological circuit, double tube positive exciting formula DC converting topological circuit.
The present invention also proposes a kind of PV air-conditioner system, and comprise full direct-flow air conditioner and photovoltaic power supply device as above, described full direct-flow air conditioner is connected with described DC bus.
Preferably, described full direct-flow air conditioner is for being the full direct-flow air conditioner of low pressure.
The present invention also proposes a kind of automobile, comprises PV air-conditioner system as above, and described full direct-flow air conditioner is arranged on described automobile and is contained in space, and described photovoltaic generating module is located at the hull outside of automobile.
Technical solution of the present invention is by adopting output voltage and the output current of duty ratio adjusting circuit real-time sampling monitoring photovoltaic generating module, draw the duty ratio that the current maximum power point of photovoltaic generating module is corresponding, pulse signal generator is made to generate corresponding output of pulse signal, battery module is charged with maximum power work output to control DC transfer circuit, thus promote the charging rate of battery module and the utilance of photovoltaic generating module energy output, reduce energy waste.
Accompanying drawing explanation
Fig. 1 is the circuit module schematic diagram of photovoltaic power supply device first embodiment of the present invention;
Fig. 2 is the circuit module schematic diagram of photovoltaic power supply device second embodiment first embodiment of the present invention;
Fig. 3 is the circuit module schematic diagram of photovoltaic power supply device second embodiment second embodiment of the present invention;
Fig. 4 is the circuit module schematic diagram of photovoltaic power supply device the 3rd embodiment of the present invention;
Fig. 5 is the circuit module schematic diagram of photovoltaic power supply device the 4th embodiment of the present invention;
Fig. 6 is the circuit module schematic diagram of photovoltaic power supply device the 5th embodiment of the present invention;
Fig. 7 is the circuit diagram of DC transfer circuit first embodiment of photovoltaic power supply device of the present invention;
Fig. 8 is the circuit diagram of DC transfer circuit second embodiment of photovoltaic power supply device of the present invention;
Fig. 9 is the circuit diagram of DC transfer circuit the 3rd embodiment of photovoltaic power supply device of the present invention;
Figure 10 is the circuit diagram of DC transfer circuit the 4th embodiment of photovoltaic power supply device of the present invention;
Figure 11 is the circuit diagram of DC transfer circuit the 5th embodiment of photovoltaic power supply device of the present invention;
Figure 12 is the circuit diagram of DC transfer circuit the 6th embodiment of photovoltaic power supply device of the present invention;
Figure 13 is the circuit diagram of DC transfer circuit the 7th embodiment of photovoltaic power supply device of the present invention;
Figure 14 is the module diagram of PV air-conditioner system of the present invention.
Drawing reference numeral illustrates:
| Photovoltaic generating module 100 | DC transfer circuit 200 |
| DC bus 300 | Battery module 400 |
| Duty ratio adjusting circuit 500 | Pulse signal generator 600 |
| First sample circuit 510 | MPPT maximum power point tracking controller 520 |
| First comparable chip 530 | Duty cycle conversion circuit 540 |
| First pi controller 541 | Second pi controller 542 |
| Second comparable chip 543 | Second sample circuit 544 |
| 3rd pi controller 545 | Signal switching module 546 |
| 3rd sample circuit 547 | State-of-charge monitoring modular 548 |
| Charging curve planning module 549 | The output end vo of photovoltaic generating module 100 |
| The input Vin of DC transfer circuit 200 | The output end vo ut of DC transfer circuit 200 |
| The charge-discharge end Vin-out of battery module 400 | The voltage output end V1 of the first sample circuit 510 |
| The current output terminal I1 of the first sample circuit 510 | Full direct-flow air conditioner 700 |
| First electric capacity C1 | Second electric capacity C2 |
| 3rd electric capacity C3 | 4th electric capacity C4 |
| 5th electric capacity C5 | 6th electric capacity C6 |
| 7th electric capacity C7 | 8th electric capacity C8 |
| 9th electric capacity C9 | Tenth electric capacity C10 |
| 11 electric capacity C11 | 12 electric capacity C12 |
| 13 electric capacity C13 | 14 electric capacity C14 |
| 15 electric capacity C15 | 16 electric capacity C16 |
| 17 electric capacity C17 | 18 electric capacity C18 |
| 19 electric capacity C19 | 20 electric capacity C20 |
[0039]
| 21 electric capacity C21 | 22 electric capacity C22 |
| 23 electric capacity C23 | 24 electric capacity C24 |
| First inductance L 1 | Second inductance L 2 |
| 3rd inductance L 3 | 4th inductance L 4 |
| 5th inductance L 5 | 6th inductance L 6 |
| 7th inductance L 7 | First diode D1 |
| Second diode D2 | 3rd diode D3 |
| 4th diode D4 | 5th diode D5 |
| 6th diode D6 | 7th diode D7 |
| 8th diode D8 | 9th diode D9 |
| Tenth diode D10 | 11 diode D11 |
| 12 diode D12 | 13 diode D13 |
| 14 diode D14 | 15 diode D15 |
| First PNP type triode Q1 | Second PNP type triode Q2 |
| 3rd PNP type triode Q3 | 4th PNP type triode Q4 |
| 5th PNP type triode Q5 | 6th PNP type triode Q6 |
| 7th PNP type triode Q7 | 8th PNP type triode Q8 |
| 9th PNP type triode Q9 | Tenth PNP type triode Q10 |
| 11 PNP type triode Q11 | 12 PNP type triode Q12 |
| 13 PNP type triode Q13 | 14 PNP type triode Q14 |
| First transformer T1 | Second transformer T2 |
| 3rd transformer T3 | 4th transformer T4 |
| 5th transformer T5 | 6th transformer T6 |
| 7th transformer T7 | First resistance R1 |
| First full-bridge rectification bridge BR1 | Second full-bridge rectification bridge BR2 |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Be described further with regard to technical scheme of the present invention below in conjunction with drawings and the specific embodiments.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention proposes a kind of photovoltaic power supply device.
Referring to figs. 1 through the circuit module schematic diagram that 14, Fig. 1 is photovoltaic power supply device first embodiment of the present invention; Fig. 2 is the circuit module schematic diagram of photovoltaic power supply device second embodiment first embodiment of the present invention; Fig. 3 is the circuit module schematic diagram of photovoltaic power supply device second embodiment second embodiment of the present invention; Fig. 4 is the circuit module schematic diagram of photovoltaic power supply device the 3rd embodiment of the present invention; Fig. 5 is the circuit module schematic diagram of photovoltaic power supply device the 4th embodiment of the present invention; Fig. 6 is the circuit module schematic diagram of photovoltaic power supply device the 5th embodiment of the present invention; Fig. 7 is the circuit diagram of DC transfer circuit first embodiment of photovoltaic power supply device of the present invention; Fig. 8 is the circuit diagram of DC transfer circuit second embodiment of photovoltaic power supply device of the present invention; Fig. 9 is the circuit diagram of DC transfer circuit the 3rd embodiment of photovoltaic power supply device of the present invention; Figure 10 is the circuit diagram of DC transfer circuit the 4th embodiment of photovoltaic power supply device of the present invention; Figure 11 is the circuit diagram of DC transfer circuit the 5th embodiment of photovoltaic power supply device of the present invention; Figure 12 is the circuit diagram of DC transfer circuit the 6th embodiment of photovoltaic power supply device of the present invention; Figure 13 is the circuit diagram of DC transfer circuit the 7th embodiment of photovoltaic power supply device of the present invention.
In the first embodiment of photovoltaic power supply device of the present invention, this photovoltaic power supply device comprises photovoltaic generating module 100, DC transfer circuit 200, direct current output bus, battery module 400, duty ratio adjusting circuit 500 and pulse signal generator 600, wherein:
The input Vin of DC transfer circuit 200 connects the output end vo of photovoltaic generating module 100, and the output end vo ut of DC transfer circuit 200 exports through DC bus 300; When DC bus 300 connects electrical appliance, electrical appliance is powered.
The charge-discharge end Vin-out of battery module 400 connects DC bus 300;
The input of duty ratio adjusting circuit 500 connects the output end vo of photovoltaic generating module 100, the voltage and current (i.e. the output voltage of photovoltaic generating module 100 and output current) of the output end vo of sampling photovoltaic generating module 100, and according to the voltage and current sampled to export the duty ratio of corresponding maximum power dotted state; The duty ratio input of pulse signal generator 600 connects the output of duty ratio adjusting circuit 500, the output of pulse signal generator 600 connects the controlled end of DC transfer circuit 200, pulse signal generator 600 receives the duty ratio that duty ratio adjusting circuit 500 exports, and generate corresponding pulse control signal according to duty ratio, control the work of DC transfer circuit 200.
Photovoltaic generating module 100 can be photovoltaic battery panel, single crystal silicon battery plate, polycrystal silicon cell plate, solar film battery or DSSC etc.
The present embodiment technical scheme is by adopting output voltage and the output current of duty ratio adjusting circuit 500 real-time sampling monitoring photovoltaic generating module 100, draw the duty ratio that the current maximum power point of photovoltaic generating module 100 is corresponding, pulse signal generator 600 is made to generate corresponding output of pulse signal, battery module 400 is charged with maximum power work output to control DC transfer circuit 200, thus promote the charging rate of battery module 400 and the utilance of photovoltaic generating module 100 energy output, reduce energy waste.
Further, with reference to Fig. 2 and 3, the present embodiment proposes two kinds of embodiments; Concrete with reference to Fig. 2, first embodiment of the present embodiment is: duty ratio adjusting circuit 500 comprises the first sample circuit 510, MPPT maximum power point tracking controller 520, first comparable chip 530 and duty cycle conversion circuit 540, the input of the first sample circuit 510 connects the output end vo of photovoltaic generating module 100, the voltage and current of the output end vo of sampling photovoltaic generating module 100; The voltage output end V1 of the first sample circuit 510 exports the voltage that samples and exports the electric current that samples to MPPT maximum power point tracking controller 520 to the current output terminal I1 of MPPT maximum power point tracking controller 520, first sample circuit 510; The voltage and current received followed the tracks of by MPPT maximum power point tracking controller 520, exports to obtain reference voltage corresponding to maximum power point; The first input end of the first comparable chip 530 connects the output of MPPT maximum power point tracking controller 520, second input of the first comparable chip 530 connects the voltage output end V1 of the first sample circuit 510, and the output of the first comparable chip 530 connects the input of duty cycle conversion circuit 540; First comparable chip 530 compares the voltage that its first input end and the second input receive, and with output voltage deviation to duty cycle conversion circuit 540, duty cycle conversion circuit 540 exports corresponding duty ratio according to the voltage deviation received.
With reference to Fig. 3, second embodiment of the present embodiment and the difference of the first embodiment are: the voltage and current received followed the tracks of by MPPT maximum power point tracking controller 520, with the reference current that Maximum Power Output point is corresponding; The first input end of the first comparable chip 530 connects the output of MPPT maximum power point tracking controller 520, and the second input of the first comparable chip 530 connects the current output terminal I1 of the first sample circuit 510; First comparable chip 530 compares the electric current that its first input end and the second input receive, and with output current deviation to duty cycle conversion circuit 540, duty cycle conversion circuit 540 exports corresponding duty ratio according to the voltage deviation received.
Preferably, with reference to Fig. 4, the present embodiment is based on the scheme of the second embodiment, in the present embodiment, duty cycle conversion circuit 540 comprises the first pi controller 541, the input of the first pi controller 541 is the input of duty cycle conversion circuit 540, and the output of the first pi controller 541 is the output of duty cycle conversion circuit 540; The signal of telecommunication (signal of telecommunication in the present embodiment is voltage deviation signal) that first pi controller 541 receives according to its input, exports corresponding duty ratio.In the present embodiment, the first pi controller 541 receives the voltage deviation signal that the first comparable chip 530 exports, and the voltage deviation received is carried out integration by the first pi controller 541, exports the duty ratio of ratio corresponding to the integration of this voltage deviation.Certainly, the present embodiment is just preferably based on the first embodiment of the second embodiment is example; The present embodiment can also based on the second embodiment of the second embodiment, during based on the second embodiment, first pi controller 541 receives the current deviation signal that the first comparable chip 530 exports, the current deviation received is carried out integration by the first pi controller 541, exports the duty ratio of ratio corresponding to the integration of this current deviation.
Preferably, with reference to Fig. 5, the present embodiment is preferably based on the first embodiment of the second embodiment, the duty cycle conversion circuit 540 of the present embodiment comprises the second pi controller 542, second comparable chip 543, second sample circuit 544 and the 3rd pi controller 545, the input of the second pi controller 542 is the input of duty cycle conversion circuit 540, the output of the second pi controller 542 connects the first input end of the second comparable chip 543, second sample circuit 544 sample DC transfer circuit 200 output end vo ut electric current and output to the second input of the second comparable chip 543, the output of the second comparable chip 543 connects the input of the 3rd pi controller 545, the output of the 3rd pi controller 545 is the output of duty cycle conversion circuit 540, the signal of telecommunication (being voltage deviation signal in the present embodiment) that second pi controller 542 receives according to its input exports reference current accordingly to export DC transfer circuit 200, the electric current that output reference current and the second sample circuit 544 export compares and obtains current deviation by the second comparable chip 543,3rd pi controller 545, according to the current deviation received, exports corresponding duty ratio.
The voltage deviation received is carried out integration by the second pi controller 542, export the output reference current (i.e. the output current of corresponding maximum power point) of the DC transfer circuit 200 of the corresponding ratio of integration of this voltage deviation, output current current with the DC transfer circuit 200 of the second sample circuit 544 sampling feedback for this output reference current compares by the second comparable chip 543, show that current deviation is to the 3rd pi controller 545, the current deviation received is carried out integration by the 3rd pi controller 545, export the duty ratio of the corresponding ratio of integration of this current deviation.The present embodiment technical scheme adopts twice proportional integral by the second pi controller 542 and the 3rd pi controller 545 and confirms duty ratio, makes to show that duty ratio is more accurate.
Certainly, the present embodiment can also based on the second embodiment of the second embodiment, difference is only that the second pi controller 542 is current deviation signals that reception first comparable chip 530 exports, and exports corresponding output current reference value according to this current deviation signal.
Further, with reference to Fig. 6, the present embodiment is based on the technical scheme of the 4th embodiment, the duty ratio adjusting circuit 500 of the present embodiment also comprises signal switching module 546, 3rd sample circuit 547, state-of-charge monitoring modular 548 and charging curve planning module 549, the voltage and current of the charge-discharge end Vin-out of the 3rd sample circuit 547 sample battery module 400, and output to state-of-charge monitoring modular 548, state-of-charge monitoring modular 548 is according to the voltage and current received, show that the state-of-charge of battery module 400 exports charging curve planning module 549 to, and whether reach predetermined threshold value according to the state-of-charge of storage battery and export and control signal to signal switching module 546 accordingly,
Charging curve planning module 549 is according to the state-of-charge received, export the first input end of corresponding reference current to signal switching module 546, second input of signal switching module 546 connects the output of the second pi controller 542, and the output of signal switching module 546 connects the first input end of the second comparable chip 543; State-of-charge monitoring modular 548, when the state-of-charge of storage battery reaches predetermined threshold value, exports the first control signal and is communicated with output with the first input end of control signal handover module 546; State-of-charge monitoring modular 548, when the state-of-charge of storage battery does not reach predetermined threshold value, exports the second control signal and is communicated with output with the second input of control signal handover module 546.
In the present embodiment, the electric current of the charge-discharge end Vin-out of the 3rd sample circuit 547 Real-time Feedback battery module 400 and voltage are to state-of-charge monitoring modular 548, state-of-charge monitoring modular 548 is according to the electric current of the charge/discharge of the charge-discharge end Vin-out of battery module 400 and voltage, just be according to the charging current of charge-discharge end Vin-out, discharging current is negative, thus the dump energy calculated in battery module 400, namely draw the state-of-charge of battery module 400; The state-of-charge drawn is outputted to charging curve planning module 549 by state-of-charge monitoring modular 548, charging curve planning module 549, according to the curved line relation of state-of-charge and charging current, exports second input of charging current corresponding to current state-of-charge to signal switching module 546; A threshold value (the present embodiment preferably this threshold value is the critical state-of-charge entering trickle charge) has been preset in state-of-charge monitoring modular 548.1, when the state-of-charge drawn reaches this threshold size (namely reaching the state-of-charge of trickle charge), export the first control signal to be communicated with the second input of signal switching module 546 (being namely communicated with the output of charging curve planning module 549) with the output of control signal handover module 546, thus signal switching module 546 exports charging current corresponding to current state-of-charge (i.e. trickle-charge current), current charging current compares with trickle-charge current by the second comparable chip 543, draw current deviation size, 3rd pi controller 545 draws corresponding duty ratio according to this current deviation size, this duty ratio makes pulse signal generator 600 generate corresponding pulse signal, thus the output current of feedback regulation DC transfer circuit 200 is trickle-charge current, trickle charge is carried out to battery module 400, prevent the charging current of battery module 400 excessive, ensure the safety of battery module 400.2, when the state-of-charge drawn does not reach this threshold size (namely not reaching the state-of-charge of trickle charge), export the second control signal to be communicated with the first input end of signal switching module 546 (being namely communicated with the output of the second pi controller 542) with the output of control signal handover module 546, thus signal switching module 546 exports the output current reference value that the second pi controller 542 exports, current charging current compares with output current reference value by the second comparable chip 543, draw current deviation size, 3rd pi controller 545 draws corresponding duty ratio according to this current deviation size, this duty ratio makes pulse signal generator 600 generate corresponding pulse signal, thus the output current of feedback regulation DC transfer circuit 200 is the output current that maximum power point is corresponding, ensure the quick charge to battery module 400.
By the present embodiment technical scheme, make battery module 400 when being full of (reaching trickle charge state) soon, carry out trickle charge, and make battery module 400 when state-of-charge is lower, keep quick charge, thus both can realize battery module 400 and be full of faster, simultaneously, preventing the excessively current charge of battery module 400 when being full of soon, ensureing the fail safe of battery module 400.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts semi-bridge inversion full-bridge rectification topological circuit, with reference to Fig. 7, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the first PNP type triode Q1, the second PNP type triode Q2, the first transformer T1, the first inductance L 1 and the first full-bridge rectification bridge BR1, wherein: the anode of the input Vin of DC transfer circuit 200 is connected the negative terminal of the input Vin of DC transfer circuit 200 successively with the second electric capacity C2 through the first electric capacity C1, the collector electrode of the first PNP type triode Q1 connects the anode of the input Vin of DC transfer circuit 200, the emitter of the first PNP type triode Q1 connects the collector electrode of the second PNP type triode Q2, the emitter of the second PNP type triode Q2 connects the negative terminal of the input Vin of DC transfer circuit 200, and the base stage of the first PNP type triode Q1 and the base stage of the second PNP type triode Q2 are the controlled end of DC transfer circuit 200, one end of the primary coil of the first transformer T1 connects the emitter of the first PNP type triode Q1, the other end of the primary coil of the first transformer T1 connects the common port of the first electric capacity C1 and the second electric capacity C2 through the 3rd electric capacity C3, the secondary coil of the first transformer T1 connects the input of the first full-bridge rectification bridge BR1, the first end of the first inductance L 1 connects the output plus terminal of the first full-bridge rectification bridge BR1, second end of the first inductance L 1 is the output end vo ut of DC transfer circuit 200, second end of the first inductance L 1 is also connected the output negative terminal of the first full-bridge rectification bridge BR1 respectively with the 5th electric capacity C5 through the 4th electric capacity C4.
In the present embodiment, the first electric capacity C1 and the second electric capacity C2 is dividing potential drop effect, and the 3rd electric capacity C3 is for act on every straight-through friendship, and the first inductance L 1 is filter action; 4th electric capacity C4 can select the electrochemical capacitor of larger capacity, and to absorb low-order harmonic and ME for maintenance, the 5th electric capacity C5 can select the thin-film capacitor compared with low capacity, with filtering high frequency components; First full-bridge rectification bridge BR1 is made up of four diodes (non-label), and the first transformer T1 is preferably normal shock transformer.DC transfer circuit 200 operation principle of the present embodiment is: the pulse signal exported by pulse signal maker controls conducting and the cut-off of the first PNP type triode Q1 and the second PNP type triode Q2 respectively, thus the output size of the secondary coil of regulating and controlling first transformer T1, the output of the secondary coil of the first transformer T1 outputs on DC bus 300 through the first inductance L 1 filtering after carrying out rectification through the first full-bridge rectification bridge BR1, charges or supplying power for outside to battery module 400.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts semi-bridge inversion Half bridge rectifier topological circuit, with reference to Fig. 8, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the 6th electric capacity C6, the 7th electric capacity C7, the 8th electric capacity C8, the 9th electric capacity C9, the tenth electric capacity C10, the 3rd PNP type triode Q3, the 4th PNP type triode Q4, the second inductance L 2, second transformer T2, the first diode D1 and the second diode D2, wherein: the anode of the input Vin of DC transfer circuit 200 is connected the negative terminal of the input Vin of DC transfer circuit 200 successively with the 7th electric capacity C7 through the 6th electric capacity C6, the collector electrode of the 3rd PNP type triode Q3 connects the anode of the input Vin of DC transfer circuit 200, the emitter of the 3rd PNP type triode Q3 connects the collector electrode of the 4th PNP type triode Q4, the emitter of the 4th PNP type triode Q4 connects the negative terminal of the input Vin of DC transfer circuit 200, and the base stage of the 3rd PNP type triode Q3 and the base stage of the 4th PNP type triode Q4 are the controlled end of DC transfer circuit 200, one end of the primary coil of the second transformer T2 connects the emitter of the 3rd PNP type triode Q3, the other end of the primary coil of the second transformer T2 connects the common port of the 6th electric capacity C6 and the 7th electric capacity C7 through the 8th electric capacity C8, one end first diode D1 of the secondary coil of the second transformer T2 connects the first end of the second inductance L 2, second end of the second inductance L 2 is the output end vo ut of DC transfer circuit 200, the other end of the secondary coil of the second transformer T2 connects the first end of the first inductance L 1 through the second diode D2, second end of the second inductance L 2 is also connected the central shaft heads of the secondary coil of the second transformer T2 respectively with the tenth electric capacity C10 through the 9th electric capacity C9.
DC transfer circuit 200 structure of the present embodiment and the circuit structure of the first embodiment similar, difference is: the present embodiment forms Half bridge rectifier structure by the first diode D1 and the second diode D2, and the secondary coil of the second transformer T2 has central shaft heads.The operation principle of the DC transfer circuit 200 of the present embodiment is identical with DC transfer circuit 200 principle of the first embodiment, is not repeating.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts full-bridge LLC resonance inversion full-bridge rectification topological circuit, with reference to Fig. 9, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the 11 electric capacity C11, the 12 electric capacity C12, the 13 electric capacity C13, the 14 electric capacity C14, the 5th PNP type triode Q5, the 6th PNP type triode Q6, the 7th PNP type triode Q7, the 8th PNP type triode Q8, the 3rd inductance L 3, the 4th inductance L 4, second full-bridge rectification bridge BR2 and the 3rd transformer T3, wherein: the 11 electric capacity C11 is connected between the positive and negative end of the input Vin of DC transfer circuit 200, the collector electrode of the 5th PNP type triode Q5 connects the anode of the input Vin of DC transfer circuit 200, the emitter of the 5th PNP type triode Q5 connects the collector electrode of the 6th PNP type triode Q6, and the emitter of the 6th PNP type triode Q6 connects the negative terminal of the input Vin of DC transfer circuit 200, the collector electrode of the 7th PNP type triode Q7 connects the anode of the input Vin of DC transfer circuit 200, the emitter of the 7th PNP type triode Q7 connects the collector electrode of the 8th PNP type triode Q8, and the emitter of the 7th PNP type triode Q7 connects the negative terminal of the input Vin of DC transfer circuit 200, the base stage of the 5th PNP type triode Q5, the base stage of the 6th PNP type triode Q6, the base stage of the 7th PNP type triode Q7 and the base stage of the 8th PNP type triode Q8 are the controlled end of DC transfer circuit 200, one end the 3rd inductance L 3 of the primary coil of the 3rd transformer T3 connects the emitter of the 5th PNP type triode Q5, the other end of the primary coil of the 3rd transformer T3 connects the emitter of the 7th PNP type triode Q7 through the 12 electric capacity C12, the secondary coil of the 3rd transformer T3 connects the input of the second full-bridge rectification bridge BR2, the first end of the 4th inductance L 4 connects the output plus terminal of the second full-bridge rectification bridge BR2, second end of the 4th inductance L 4 is the output end vo ut of DC transfer circuit 200, second end of the 4th inductance L 4 is also connected the output negative terminal of the second full-bridge rectification bridge BR2 respectively with the 14 electric capacity C14 through the 13 electric capacity C13.
The 5th PNP type triode Q5 in the present embodiment, the 6th PNP type triode Q6, the 7th PNP type triode Q7 and the 8th PNP type triode Q8 form the inverter bridge of a doube bridge arm, resonant capacitance (i.e. the 12 electric capacity C12) is inserted between front inverter bridge (namely the 7th PNP type triode Q7 and the 8th PNP type triode Q8 is formed) and the 3rd transformer T3, then the leakage inductance (i.e. the 3rd inductance L 3) of the 3rd transformer T3 is coordinated, form the resonant circuit of a LLC, thus achieve no-voltage and open or zero-current switching; The secondary coil side of the 3rd transformer T3 is rectifying part.Its principle: be also the break-make work that the pulse signal generated by pulse signal generator 600 controls the resonant circuit of above-mentioned LLC respectively, carrys out the output of regulating and controlling the 3rd transformer T3, thus regulates the output size of DC transfer circuit 200.
Further, with reference to Figure 10, the DC transfer circuit 200 of this embodiment also comprises the first resistance R1, the 3rd diode D3 and the 15 electric capacity C15, one end of first resistance R1 connects the first end of the 4th inductance L 4, the other end of the first resistance R1 connects the second end of ground the 4th inductance L 4 through the 3rd diode D3, the 15 electric capacity C15 is in parallel with the first resistance R1.
Form the reverse absorption circuit of RCD by the first resistance R1, the 15 electric capacity C15 and the 3rd diode D3, be connected in parallel on the two ends of the 4th inductance L 4, can prevent the 4th inductance L 4 from occurring bias phenomenon, improve the reliability of DC transfer circuit 200.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts interleaving inverse excitation type DC converting topological circuit, with reference to Figure 11, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the 16 electric capacity C16, the 17 electric capacity C17, the 18 electric capacity C18, the 9th PNP type triode Q9, the tenth PNP type triode Q10, the 4th diode D4, the 5th diode D5, the 5th inductance L 5, the 4th transformer T4 and the 5th transformer T5, wherein: the 16 electric capacity C16 is connected between the positive and negative end of the input Vin of DC transfer circuit 200, one end of the primary coil of the 4th transformer T4 connects the anode of the input Vin of DC transfer circuit 200, the other end of the primary coil of the 4th transformer T4 connects the collector electrode of the 9th PNP type triode Q9, the emitter of the 9th PNP type triode Q9 connects the negative terminal of the input Vin of DC transfer circuit 200, one end the 4th diode D4 of the secondary coil of the 4th transformer T4 connects the first end of the 5th inductance L 5, second end of the 5th inductance L 5 is the output end vo ut of DC transfer circuit 200, second end of the 5th inductance L 5 is also connected the other end of the secondary coil of the 4th transformer T4 respectively with the 18 electric capacity C18 through the 17 electric capacity C17, one end of the primary coil of the 5th transformer T5 connects the anode of the input Vin of DC transfer circuit 200, the other end of the primary coil of the 5th transformer T5 connects the collector electrode of the tenth PNP type triode Q10, the emitter of the tenth PNP type triode Q10 connects the negative terminal of the input Vin of DC transfer circuit 200, one end of the secondary coil of the 5th transformer T5 connects the other end of the secondary coil of the 4th transformer T4, and the other end of the secondary coil of the 5th transformer T5 connects the first end of the 5th inductance L 5 through the 5th diode D5.
Wherein, have employed two flyback transformers (i.e. the 4th transformer T4 and the 5th transformer T5) in parallel, this circuit structure is simple and fail safe is good.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts push-pull type DC converting topological circuit, with reference to Figure 12, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 11 PNP type triode Q11, the 12 PNP type triode Q12, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the 6th inductance L 6 and the 6th transformer T6, wherein: the 19 electric capacity C19 is connected between the positive and negative end of the input Vin of DC transfer circuit 200; The collector electrode of the 11 PNP type triode Q11 connects one end of the primary coil of the 6th transformer T6, the emitter of the 12 PNP type triode Q12 connects the other end of the primary coil of the 6th transformer T6, the emitter of the 11 PNP type triode Q11 is connected the negative terminal of the input Vin of DC transfer circuit 200 with the collector electrode of the 12 PNP type triode Q12, the base stage of the 11 PNP type triode Q11 and the base stage of the 12 PNP type triode Q12 are the controlled end of DC transfer circuit 200; The central shaft heads of the primary coil of the 6th transformer T6 connects the anode of the input Vin of DC transfer circuit 200, one end the 6th diode D6 of the secondary coil of the 6th transformer T6 connects the first end of the 6th inductance L 6, the other end of the secondary coil of the 6th transformer T6 connects the first end of the 6th inductance L 6 through the 8th diode D8, the second end of the 6th inductance L 6 is the output end vo ut of DC transfer circuit 200; One end of 20 electric capacity C20 connects the second end of the 6th inductance L 6, the other end of the 20 electric capacity C20 connects one end of the secondary coil of the 6th transformer T6 through the 7th diode D7, the other end of the 20 electric capacity C20 also connects the other end of the secondary coil of the 6th transformer T6 through the 9th diode D9, the 21 electric capacity C21 is in parallel with the 20 electric capacity C20.
Concrete, the full DC transfer circuit of the present embodiment preferably adopts double tube positive exciting formula DC converting topological circuit, with reference to Figure 13, is the preferred circuit arrangement of the present embodiment.The DC transfer circuit 200 of this preferred version comprises the 22 electric capacity C22, the 23 electric capacity C23, the 24 electric capacity C24, the 13 PNP type triode Q13, the 14 PNP type triode Q14, the tenth diode D10, the 11 diode D11, the 12 diode D12, the 13 diode D13, the 14 diode D14, the 15 diode D15, the 7th inductance L 7 and the 7th transformer T7, wherein: the 22 electric capacity C22 is connected between the positive and negative end of the input Vin of DC transfer circuit 200, one end of the primary coil of the 7th transformer T7 connects the emitter of the 13 PNP type triode Q13, the other end of the primary coil of the 7th transformer T7 connects the collector electrode of the 14 PNP type triode Q14, the other end of the primary coil of the 7th transformer T7 also connects the anode of the input Vin of DC transfer circuit 200 through the tenth diode D10, the collector electrode of the 13 PNP type triode Q13 connects the anode of the input Vin of DC transfer circuit 200, the emitter of the 14 PNP type triode Q14 connects the negative terminal of the input Vin of DC transfer circuit 200, the emitter of the 14 PNP type triode Q14 also connects the emitter of the 13 PNP type triode Q13 through the 11 diode D11, the base stage of the 13 PNP type triode Q13 and the base stage of the 14 PNP type triode Q14 are the controlled end of DC transfer circuit 200, the first end of the secondary coil of the 7th transformer T7 connects the first end of the 7th inductance L 7 through the 12 diode D12, the other end of the secondary coil of the 7th transformer T7 connects the first end of the 7th inductance L 7 through the 14 diode D14, the second end of the 7th inductance L 7 is the output end vo ut of DC transfer circuit 200, one end of 23 electric capacity C23 connects the second end of the 7th inductance L 7, the other end of the 23 electric capacity C23 connects one end of the secondary coil of the 7th transformer T7 through the 13 diode D13, the other end of the 23 electric capacity C23 also connects the other end of the secondary coil of the 7th transformer T7 through the 15 diode D15, the 24 electric capacity C24 is in parallel with the 23 electric capacity C23.
Two device for power switching (i.e. the 13 PNP type triode Q13 and the 14 PNP type triode Q14) of the DC transfer circuit 200 of the present embodiment are connected on the two ends of the 7th transformer T7 primary coil respectively, then, tenth diode D10 is connected on the anode of the input Vin of DC transfer circuit 200 and the lower end (i.e. the other end of the 7th transformer T7 primary coil) of the 7th transformer T7 primary coil, 11 diode D11 receives the negative terminal of the upper end of the 7th transformer T7 primary coil and the input Vin of DC transfer circuit 200, thus make the phenomenon that this circuit there will not be two power switch pipes straight-through, improve reliability and the fail safe of system.
It should be noted that, in the embodiment above, all PNP type triode other identical function switching tubes all available or power switching modules are replaced; The present invention just lists the preferred embodiment of above-mentioned several topological circuit as DC transfer circuit 200, and DC transfer circuit 200 can also be the topological circuit of other type.
The present invention also proposes a kind of PV air-conditioner system, and with reference to Figure 14, this PV air-conditioner system comprises full direct-flow air conditioner 700 and photovoltaic power supply device.The concrete structure of this photovoltaic power supply device is with reference to above-described embodiment, because this PV air-conditioner system have employed whole technical schemes of above-mentioned all embodiments, therefore all beneficial effects that the technical scheme having above-described embodiment is equally brought, this is no longer going to repeat them.Wherein, full direct-flow air conditioner 700 is connected with the DC bus 300 of photovoltaic power supply device.Preferably, full direct-flow air conditioner 700 selects the full direct-flow air conditioner of low pressure, can improve the flying power of battery module 400 like this.
The present invention also proposes a kind of automobile, comprises PV air-conditioner system.The concrete structure of this PV air-conditioner system is with reference to above-described embodiment, and because this automobile have employed whole technical schemes of above-mentioned all embodiments, all beneficial effects that the technical scheme therefore equally with above-described embodiment is brought, this is no longer going to repeat them.Wherein, full direct-flow air conditioner is arranged on automobile and is contained in space, and photovoltaic generating module is located at the hull outside of automobile.
Should be noted that; the technical scheme of each embodiment of the present invention can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this technical scheme does not exist, also not within the protection range of application claims.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a photovoltaic power supply device, is characterized in that, comprises photovoltaic generating module, DC transfer circuit, direct current output bus, battery module, duty ratio adjusting circuit and pulse signal generator, wherein:
The input of described DC transfer circuit connects the output of described photovoltaic generating module, and the output of described DC transfer circuit exports through DC bus;
The charge-discharge end of described battery module connects described DC bus;
The input of described duty ratio adjusting circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling, and the duty ratio corresponding according to the voltage and current Maximum Power Output point sampled; The duty ratio input of described pulse signal generator connects the output of described duty ratio adjusting circuit, the output of described pulse signal generator connects the controlled end of described DC transfer circuit, described pulse signal generator receives the duty ratio that described duty ratio adjusting circuit exports, and generate corresponding pulse control signal according to described duty ratio, control the work of described DC transfer circuit.
2. photovoltaic power supply device as claimed in claim 1, it is characterized in that, described duty ratio adjusting circuit comprises the first sample circuit, MPPT maximum power point tracking controller, the first comparable chip and duty cycle conversion circuit, the input of described first sample circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling; The voltage output end of described first sample circuit exports the voltage extremely described MPPT maximum power point tracking controller sampled, and the current output terminal of described first sample circuit exports the electric current extremely described MPPT maximum power point tracking controller sampled; Wherein,
The voltage and current received followed the tracks of by described MPPT maximum power point tracking controller, with the reference voltage that Maximum Power Output point is corresponding; The first input end of described first comparable chip connects the output of described MPPT maximum power point tracking controller, second input of described first comparable chip connects the voltage output end of described first sample circuit, and the output of described first comparable chip connects the input of described duty cycle conversion circuit; Described first comparable chip compares the voltage that its first input end and the second input receive, and with output voltage deviation to described duty cycle conversion circuit, described duty cycle conversion circuit exports corresponding duty ratio according to the voltage deviation received.
3. photovoltaic power supply device as claimed in claim 1, it is characterized in that, described duty ratio adjusting circuit comprises the first sample circuit, MPPT maximum power point tracking controller, the first comparable chip and duty cycle conversion circuit, the input of described first sample circuit connects the output of described photovoltaic generating module, the voltage and current of the output of described photovoltaic generating module of sampling; The voltage output end of described first sample circuit exports the voltage extremely described MPPT maximum power point tracking controller sampled, and the current output terminal of described first sample circuit exports the electric current extremely described MPPT maximum power point tracking controller sampled; Wherein,
The voltage and current received followed the tracks of by described MPPT maximum power point tracking controller, with the reference current that Maximum Power Output point is corresponding; The first input end of described first comparable chip connects the output of described MPPT maximum power point tracking controller, and the second input of described first comparable chip connects the current output terminal of described first sample circuit; Described first comparable chip compares the electric current that its first input end and the second input receive, and with output current deviation to described duty cycle conversion circuit, described duty cycle conversion circuit exports corresponding duty ratio according to the voltage deviation received.
4. photovoltaic power supply device as claimed in claim 2 or claim 3, it is characterized in that, described duty cycle conversion circuit comprises the first pi controller, the input of described first pi controller is the input of described duty cycle conversion circuit, and the output of described first pi controller is the output of described duty cycle conversion circuit; The signal of telecommunication that described first pi controller receives according to its input, exports corresponding duty ratio.
5. photovoltaic power supply device as claimed in claim 2 or claim 3, it is characterized in that, described duty cycle conversion circuit comprises the second pi controller, second comparable chip, second sample circuit and the 3rd pi controller, the input of described second pi controller is the input of described duty cycle conversion circuit, the output of described second pi controller connects the first input end of described second comparable chip, the electric current of the output of DC transfer circuit described in described second sampling circuit samples also outputs to the second input of described second comparable chip, the output of described second comparable chip connects the input of described 3rd pi controller, the output of described 3rd pi controller is the output of described duty cycle conversion circuit,
The signal of telecommunication that described second pi controller receives according to its input exports reference current accordingly to export described DC transfer circuit, the electric current that described output reference current and described second sample circuit export compares and obtains current deviation by described second comparable chip, described 3rd pi controller, according to the current deviation received, exports corresponding duty ratio.
6. photovoltaic power supply device as claimed in claim 2 or claim 3, it is characterized in that, described duty ratio adjusting circuit also comprises signal switching module, 3rd sample circuit, state-of-charge monitoring modular and charging curve planning module, the voltage and current of the charge-discharge end of battery module described in described 3rd sampling circuit samples, and output to described state-of-charge monitoring modular, described state-of-charge monitoring modular is according to the voltage and current received, show that the state-of-charge of described battery module exports described charging curve planning module to, and whether reach predetermined threshold value according to the state-of-charge of described storage battery and export and control signal to described signal switching module accordingly,
Described charging curve planning module is according to the state-of-charge received, export the first input end of corresponding reference current to described signal switching module, second input of described signal switching module connects the output of described second pi controller, and the output of described signal switching module connects the first input end of described second comparable chip; Described state-of-charge monitoring modular, when the state-of-charge of described storage battery reaches described predetermined threshold value, exports the first control signal and is communicated with output with the first input end controlling described signal switching module; Described state-of-charge monitoring modular, when the state-of-charge of described storage battery does not reach described predetermined threshold value, exports the second control signal and is communicated with output with the second input controlling described signal switching module.
7. as the photovoltaic power supply device in claims 1 to 3 as described in any one, it is characterized in that, described DC transfer circuit is the one in semi-bridge inversion full-bridge rectification topological circuit, semi-bridge inversion Half bridge rectifier topological circuit, full-bridge LLC resonance inversion full-bridge rectification topological circuit, interleaving inverse excitation type DC converting topological circuit, push-pull type DC converting topological circuit, double tube positive exciting formula DC converting topological circuit.
8. a PV air-conditioner system, is characterized in that, comprise full direct-flow air conditioner and photovoltaic power supply device as claimed in any of claims 1 to 7 in one of claims, described full direct-flow air conditioner is connected with described DC bus.
9. PV air-conditioner system as claimed in claim 8, is characterized in that, described full direct-flow air conditioner is for being the full direct-flow air conditioner of low pressure.
10. an automobile, is characterized in that, comprises PV air-conditioner system as claimed in claim 8 or 9, and described full direct-flow air conditioner is arranged on described automobile and is contained in space, and described photovoltaic generating module is located at the hull outside of automobile.
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| CN106300622A (en) * | 2016-10-27 | 2017-01-04 | 广东美的制冷设备有限公司 | Solar air conditioner system and device |
| CN106487233A (en) * | 2016-11-24 | 2017-03-08 | 广东美的制冷设备有限公司 | The power supply circuits of solar air conditioner and solar air conditioner |
| CN106774610A (en) * | 2017-01-06 | 2017-05-31 | 青岛天盈华智科技有限公司 | A kind of MPPT control method and its device |
| CN112355994A (en) * | 2020-11-09 | 2021-02-12 | 三门核电有限公司 | Portable intelligent charging toolbox |
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| CN204905902U (en) * | 2015-06-17 | 2015-12-23 | 广东美的制冷设备有限公司 | Photovoltaic power supply unit , photovoltaic air conditioning system and car |
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| CN104935043B (en) | 2017-12-29 |
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