CN104883120B - A kind of can the photovoltaic charged control circuit of MPPT of two-way charging - Google Patents
A kind of can the photovoltaic charged control circuit of MPPT of two-way charging Download PDFInfo
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- CN104883120B CN104883120B CN201510012271.3A CN201510012271A CN104883120B CN 104883120 B CN104883120 B CN 104883120B CN 201510012271 A CN201510012271 A CN 201510012271A CN 104883120 B CN104883120 B CN 104883120B
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- 238000007600 charging Methods 0.000 title claims abstract description 13
- 230000005669 field effect Effects 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 230000036772 blood pressure Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 108010077333 CAP1-6D Proteins 0.000 description 1
- 101000897856 Homo sapiens Adenylyl cyclase-associated protein 2 Proteins 0.000 description 1
- 101000836079 Homo sapiens Serpin B8 Proteins 0.000 description 1
- 101000798702 Homo sapiens Transmembrane protease serine 4 Proteins 0.000 description 1
- 102100029500 Prostasin Human genes 0.000 description 1
- 101100194362 Schizosaccharomyces pombe (strain 972 / ATCC 24843) res1 gene Proteins 0.000 description 1
- 102100032471 Transmembrane protease serine 4 Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 108010031970 prostasin Proteins 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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- H02J7/0072—
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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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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of can the photovoltaic charged control circuit of MPPT of two-way charging, including high-voltage side A1, low voltage side B1, buck module, control and display part, solar panels and accumulator, buck module connects high-voltage side A1 respectively, low voltage side B1, control and display part, solar panels and accumulator are connected on high-voltage side A1 or on low voltage side B1, buck module includes the first field effect transistor Q1, second field effect transistor Q2, 3rd field effect transistor Q3, 4th field effect transistor Q4, first resistance R1, second resistance R2, first electric capacity C1, second electric capacity C2 and inductance L1. the present invention adopts the second field effect transistor Q2 and the three field effect transistor Q3 to carry out afterflow and rectification, relative to traditional employing diode continuousing flow and rectification, expand the pressure differential range between solar panels and accumulator, heating also can be made to reduce simultaneously, advantageously reduce heating, improve efficiency.
Description
Technical field
The present invention relates to the topological circuit of a kind of solar charging controller, specifically a kind of can the photovoltaic charged control circuit of MPPT of two-way charging.
Background technology
Owing to the output characteristics of solar panel is affected relatively big by extraneous factor, being limited mainly by the impact of the environment such as intensity of illumination and temperature, maximum power point (output voltage and the product exporting electric current) often changes. MPPT controller, in order that improve electricity generation system efficiency, is made every effort to carry out real-time regulating system parameter according to different conditions, is made the solar panel moment be operated near maximum service rating point. MPPT charge controller is the upgrading substitute products that tradition PWM charging controls.
Fig. 1 is the topological diagram of blood pressure lowering MPPT controller most widely used on existing market, it is desirable to the maximum functional point voltage relatively battery tension of solar panels wants height. PV represents solar panels, and BAT represents accumulator. M1 prevents accumulator from being discharged by solar panels at night; also connect, at solar panels, the effect playing protection CAP1 electric capacity inverse time simultaneously; M2 is main switch; D1 is fly-wheel diode; L2 is buck inductor, M3 be the accumulator of low voltage side connect anti-after shield, CAP2 is output inductor; BAT is the accumulator of energy storage, judges whether solar panels are operated in maximum functional point by gathering RES1 upper reaches overcurrent and the too little of battery tension.
Fig. 2 is the topological diagram of boosting MPPT controller most widely used on existing market, it is desirable to the maximum functional point voltage relatively battery tension of solar panels is low. PV represents solar panels, and BAT represents accumulator.W43 prevents accumulator from being discharged by solar panels at night; also connect, at solar panels, the effect playing protection CAP42 electric capacity inverse time simultaneously; W42 is main switch; D41 is booster diode; L20 is boost inductance, W41 be the accumulator of low voltage side connect anti-after shield, CAP42 is output inductor; BAT is the accumulator of energy storage, judges whether solar panels are operated in maximum functional point by gathering RES21 upper reaches overcurrent and the too little of battery tension.
Existing scheme has following defect: the boosting of existing controller and blood pressure lowering MPPT charging are different control topologies, limit the motility of use; Present topology adopts diode boosting or afterflow mostly, and the voltage difference thus limiting solar panels and accumulator can not be too big, otherwise can generate heat relatively big, thus affecting efficiency.
Summary of the invention
It is an object of the invention to provide a kind of favorable expandability, efficiency high can the photovoltaic charged control circuit of MPPT of two-way charging, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of can the photovoltaic charged control circuit of MPPT of two-way charging, including high-voltage side A1, low voltage side B1, buck module, control and display part, solar panels and accumulator, described buck module connects high-voltage side A1 respectively, low voltage side B1, controlling and display part, described solar panels and accumulator are connected on high-voltage side A1 or on low voltage side B1, and described buck module includes the first field effect transistor Q1, second field effect transistor Q2, 3rd field effect transistor Q3, 4th field effect transistor Q4, first resistance R1, second resistance R2, first electric capacity C1, second electric capacity C2 and inductance L1, the positive pole of described high-voltage side A1 connects the source electrode of the first field effect transistor Q1, the drain electrode of the first field effect transistor Q1 connects the drain electrode of the first electric capacity C1 and the second field effect transistor Q2 respectively by the first resistance R1, and the first electric capacity C1 other end connects the negative pole of high-voltage side A1 respectively, the drain electrode of the 4th field effect transistor Q4 and the negative pole of low voltage side B1, the source electrode of the second field effect transistor Q2 connects the drain electrode of inductance L1 and the three field effect transistor Q3 respectively, the source electrode of the 3rd field effect transistor Q3 connects source electrode and the second electric capacity C2 of the 4th field effect transistor Q4 respectively, the inductance L1 other end connects the second electric capacity C2 other end and and the second resistance R2, the positive pole of the second resistance R2 other end connection low voltage side B1 respectively.
As the present invention further scheme: when described solar panels voltage is lower than battery tension, solar panels are connected on low voltage side B1, accumulator is connected on high-voltage side A1, is controlling and in display part, switch corresponding for accumulator is being adjusted high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side A1, and accumulator is connected on low voltage side B1.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts the second field effect transistor Q2 and the three field effect transistor Q3 to carry out afterflow and rectification, relative to traditional employing diode continuousing flow and rectification, expand the pressure differential range between solar panels and accumulator, heating also can be made to reduce simultaneously, advantageously reduce heating, improve efficiency. Voltage the higher person between solar panels and accumulator is connected in high voltage one end of buck module, low voltage side connects voltage junior between solar panels or accumulator, system automatically selects and is operated in blood pressure lowering charge mode or boost charge pattern, greatly facilitates project installation.
Accompanying drawing explanation
Fig. 1 is the topological diagram of blood pressure lowering MPPT controller most widely used on existing market.
Fig. 2 is the topological diagram of boosting MPPT controller most widely used on existing market.
Fig. 3 is the system block diagram of the present invention.
Fig. 4 is the circuit connection diagram of buck module in the present invention.
Method of attachment schematic diagram when Fig. 5 is that in the present invention, cell plate voltage is more than battery tension.
Method of attachment schematic diagram when Fig. 6 is that in the present invention, cell plate voltage is less than battery tension.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Refer to Fig. 3-4, a kind of can the photovoltaic charged control circuit of MPPT of two-way charging, including high-voltage side A1, low voltage side B1, buck module, control and display part, solar panels and accumulator, described buck module connects high-voltage side A1 respectively, low voltage side B1, controlling and display part, described solar panels and accumulator are connected on high-voltage side A1 or on low voltage side B1, and described buck module includes the first field effect transistor Q1, second field effect transistor Q2, 3rd field effect transistor Q3, 4th field effect transistor Q4, first resistance R1, second resistance R2, first electric capacity C1, second electric capacity C2 and inductance L1, the positive pole of described high-voltage side A1 connects the source electrode of the first field effect transistor Q1, the drain electrode of the first field effect transistor Q1 connects the drain electrode of the first electric capacity C1 and the second field effect transistor Q2 respectively by the first resistance R1, and the first electric capacity C1 other end connects the negative pole of high-voltage side A1 respectively, the drain electrode of the 4th field effect transistor Q4 and the negative pole of low voltage side B1, the source electrode of the second field effect transistor Q2 connects the drain electrode of inductance L1 and the three field effect transistor Q3 respectively, the source electrode of the 3rd field effect transistor Q3 connects source electrode and the second electric capacity C2 of the 4th field effect transistor Q4 respectively, the inductance L1 other end connects the second electric capacity C2 other end and and the second resistance R2, the positive pole of the second resistance R2 other end connection low voltage side B1 respectively.
When described solar panels voltage is lower than battery tension, solar panels are connected on low voltage side B1, and accumulator is connected on high-voltage side A1, are controlling and in display part, switch corresponding for accumulator are being adjusted high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side A1, and accumulator is connected on low voltage side B1.
Refer to Fig. 5-6, when solar panels voltage ratio battery tension height, solar panels are connected on high-voltage side A1, circuit is operated in synchronous buck circuit control model, inductive current direction is from 1 end to 2 ends, first field effect transistor Q1 prevents night battery current by solar panels reflux, also function to the effect of protection the first electric capacity C1 when solar panels reversal connection simultaneously, the charge/discharge of buck module on/off and inductance L1 by controlling the second field effect transistor Q2 and the three field effect transistor Q3, making the voltage on the first electric capacity C1 is the maximum functional point voltage of solar panels, so that the accumulator being connected on low voltage side B1 obtains maximum chargings.
When solar panels voltage is lower than battery tension, accumulator is connected on high-voltage side, circuit is operated in synchronous voltage booster circuit control model, inductive current direction is from 2 ends to 1 end, first field effect transistor Q1 prevents the reverse connection of accumulator damage to the first electric capacity C1, buck module is by controlling the charge/discharge of the second field effect transistor Q2, the on/off of the 3rd field effect transistor Q3 and inductance L1, and making the voltage on the second electric capacity C2 is the maximum functional point voltage of solar panels.
The present invention adopts the second field effect transistor Q2 and the three field effect transistor Q3 to carry out afterflow and rectification, relative to traditional employing diode continuousing flow and rectification, expand the pressure differential range between solar panels and accumulator, heating also can be made to reduce simultaneously, advantageously reduce heating, improve efficiency.Voltage the higher person between solar panels and accumulator is connected in high voltage one end of buck module, low voltage side connects voltage junior between solar panels or accumulator, system automatically selects and is operated in blood pressure lowering charge mode or boost charge pattern, greatly facilitates project installation.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, it is also possible under the premise without departing from this patent objective, make various change.
Claims (2)
1. one kind can the photovoltaic charged control circuit of MPPT of two-way charging, including high-voltage side (A1), low voltage side (B1), buck module, control and display part, solar panels and accumulator, it is characterized in that, described buck module connects high-voltage side (A1) respectively, low voltage side (B1), control and display part, described solar panels and accumulator are connected on high-voltage side (A1) or on low voltage side (B1), described buck module includes the first field effect transistor (Q1), second field effect transistor (Q2), 3rd field effect transistor (Q3), 4th field effect transistor (Q4), first resistance (R1), second resistance (R2), first electric capacity (C1), second electric capacity (C2) and inductance (L1), the positive pole of described high-voltage side (A1) connects the source electrode of the first field effect transistor (Q1), the drain electrode of the first field effect transistor (Q1) connects the first electric capacity (C1) and the drain electrode of the second field effect transistor (Q2) respectively by the first resistance (R1), first electric capacity (C1) other end connects the negative pole of high-voltage side (A1) respectively, the drain electrode of the 4th field effect transistor (Q4) and the negative pole of low voltage side (B1), the source electrode of the second field effect transistor (Q2) connects inductance (L1) and the drain electrode of the 3rd field effect transistor (Q3) respectively, the source electrode of the 3rd field effect transistor (Q3) connects source electrode and second electric capacity (C2) of the 4th field effect transistor (Q4) respectively, inductance (L1) other end connect respectively the second electric capacity (C2) other end and and the second resistance (R2), second resistance (R2) other end connects the positive pole of low voltage side (B1).
2. according to claim 1 can the photovoltaic charged control circuit of MPPT of two-way charging, it is characterized in that, when described solar panels voltage is lower than battery tension, solar panels are connected on low voltage side (B1), accumulator is connected on high-voltage side (A1), is controlling and in display part, switch corresponding for accumulator is being adjusted high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side (A1), and accumulator is connected on low voltage side (B1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510012271.3A CN104883120B (en) | 2015-01-12 | 2015-01-12 | A kind of can the photovoltaic charged control circuit of MPPT of two-way charging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510012271.3A CN104883120B (en) | 2015-01-12 | 2015-01-12 | A kind of can the photovoltaic charged control circuit of MPPT of two-way charging |
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| CN104883120A CN104883120A (en) | 2015-09-02 |
| CN104883120B true CN104883120B (en) | 2016-06-08 |
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| CN111404236B (en) * | 2020-04-24 | 2022-05-13 | 深圳硕日新能源科技有限公司 | Charging circuit of photovoltaic charging controller and photovoltaic charging controller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203911863U (en) * | 2014-05-27 | 2014-10-29 | 安徽循环经济技术工程院 | Solar photovoltaic charging control apparatus |
| CN104145226A (en) * | 2011-10-31 | 2014-11-12 | 沃尔泰拉半导体公司 | Integrated photovoltaic panel with sectional maximum power point tracking |
| CN104270085A (en) * | 2014-09-29 | 2015-01-07 | 苏州克兰兹电子科技有限公司 | DC/DC conversion circuit in solar photovoltaic power generation system |
| CN204425258U (en) * | 2015-01-12 | 2015-06-24 | 深圳硕日新能源科技有限公司 | A kind of can the photovoltaic charged control circuit of MPPT of two-way charging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI388103B (en) * | 2008-06-19 | 2013-03-01 | Macroblock Inc | Photovoltaic circuit |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104145226A (en) * | 2011-10-31 | 2014-11-12 | 沃尔泰拉半导体公司 | Integrated photovoltaic panel with sectional maximum power point tracking |
| CN203911863U (en) * | 2014-05-27 | 2014-10-29 | 安徽循环经济技术工程院 | Solar photovoltaic charging control apparatus |
| CN104270085A (en) * | 2014-09-29 | 2015-01-07 | 苏州克兰兹电子科技有限公司 | DC/DC conversion circuit in solar photovoltaic power generation system |
| CN204425258U (en) * | 2015-01-12 | 2015-06-24 | 深圳硕日新能源科技有限公司 | A kind of can the photovoltaic charged control circuit of MPPT of two-way charging |
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