CN204425258U - 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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- CN204425258U CN204425258U CN201520016175.1U CN201520016175U CN204425258U CN 204425258 U CN204425258 U CN 204425258U CN 201520016175 U CN201520016175 U CN 201520016175U CN 204425258 U CN204425258 U CN 204425258U
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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
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Abstract
The utility model discloses a kind of can the photovoltaic charged control circuit of MPPT of two-way charging, comprise high-voltage side A1, low voltage side B1, buck module, control and display section, solar panels and storage battery, buck module connects high-voltage side A1 respectively, low voltage side B1, control and display section, solar panels and storage battery are connected on high-voltage side A1 or on low voltage side B1, buck module comprises 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 L 1.The utility model adopts the second field effect transistor Q2 and the 3rd 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 storage battery, heating also can be made to reduce simultaneously, be conducive to reducing heating, raise the efficiency.
Description
Technical field
The utility model relates to a kind of topological circuit of solar charging controller, specifically a kind of can the photovoltaic charged control circuit of MPPT of two-way charging.
Background technology
Because the output characteristic of solar panel affects comparatively large by extraneous factor, the main impact by the environment such as intensity of illumination and temperature, maximum power point (product of output voltage and output current) often can change.MPPT controller object is to improve electricity generation system efficiency, makes every effort to carry out real-time regulating system parameter according to different conditions, and the solar panel moment is operated near maximum service rating point.MPPT charge controller is the upgrading substitute products that conventional P WM charging controls.
Fig. 1 is the topological diagram of step-down MPPT controller most widely used on existing market, and comparatively battery tension is high to require the maximum functional point voltage of solar panels.PV represents solar panels, and BAT represents storage battery.M1 prevents storage battery 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 storage battery of low voltage side connect anti-after shield, CAP2 is output inductor; BAT is the storage battery of energy storage, judges whether solar panels are operated in maximum functional point by collection 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, and comparatively battery tension is low to require the maximum functional point voltage of solar panels.PV represents solar panels, and BAT represents storage battery.W43 prevents storage battery 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 storage battery of low voltage side connect anti-after shield, CAP42 is output inductor; BAT is the storage battery of energy storage, judges whether solar panels are operated in maximum functional point by collection RES21 upper reaches overcurrent and the too little of battery tension.
Existing scheme has following defect: existing controller boosting and step-down MPPT charging are different control topologies, limit the flexibility of use; Present topology adopts diode to boost or afterflow mostly, and the voltage difference so just limiting solar panels and storage battery can not be too large, otherwise it is comparatively large to generate heat, thus affect efficiency.
Utility model content
What the purpose of this utility model was to provide a kind of favorable expandability, efficiency high can the photovoltaic charged control circuit of MPPT of two-way charging, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
Can the photovoltaic charged control circuit of MPPT of two-way charging, comprise high-voltage side A1, low voltage side B1, buck module, control and display section, solar panels and storage battery, described buck module connects high-voltage side A1 respectively, low voltage side B1, control and display section, described solar panels and storage battery are connected on high-voltage side A1 or on low voltage side B1, and described buck module comprises 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 L 1, 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, 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 L 1 and the 3rd 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, inductance L 1 other end connect respectively the second electric capacity C2 other end and and the second resistance R2, the second resistance R2 other end connects the positive pole of low voltage side B1.
As the utility model further scheme: when described solar panels voltage is lower than battery tension, solar panels are connected on low voltage side B1, storage battery is connected on high-voltage side A1, in control and display section, switch corresponding for storage battery is adjusted to high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side A1, and storage battery is connected on low voltage side B1.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts the second field effect transistor Q2 and the 3rd 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 storage battery, heating also can be made to reduce simultaneously, be conducive to reducing heating, raise the efficiency.Voltage the higher person between solar panels and storage battery is connected in high voltage one end of buck module, low voltage side connects voltage junior between solar panels or storage battery, system is selected to be operated in step-down charge mode or boost charge pattern automatically, greatly facilitates project installation.
Accompanying drawing explanation
Fig. 1 is the topological diagram of step-down 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 system block diagram of the present utility model.
Fig. 4 is the circuit connection diagram of buck module in the utility model.
Fig. 5 is method of attachment schematic diagram when cell plate voltage is greater than battery tension in the utility model.
Fig. 6 is method of attachment schematic diagram when cell plate voltage is less than battery tension in the utility model.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 3-4, a kind of can the photovoltaic charged control circuit of MPPT of two-way charging, comprise high-voltage side A1, low voltage side B1, buck module, control and display section, solar panels and storage battery, described buck module connects high-voltage side A1 respectively, low voltage side B1, control and display section, described solar panels and storage battery are connected on high-voltage side A1 or on low voltage side B1, and described buck module comprises 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 L 1, 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, 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 L 1 and the 3rd 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, inductance L 1 other end connect respectively the second electric capacity C2 other end and and the second resistance R2, the second resistance R2 other end connects the positive pole of low voltage side B1.
When described solar panels voltage is lower than battery tension, solar panels are connected on low voltage side B1, and storage battery is connected on high-voltage side A1, in control and display section, switch corresponding for storage battery are adjusted to high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side A1, and storage battery 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 working is in synchronous buck control circui pattern, inductive current direction is from 1 end to 2 ends, first field effect transistor Q1 prevents night storage battery from flowing through solar panels reflux, also play the effect of protection first electric capacity C1 when solar panels reversal connection simultaneously, buck module is by control second field effect transistor Q2 and the on/off of the 3rd field effect transistor Q3 and the charge/discharge of inductance L 1, the voltage on the first electric capacity C1 is made to be the maximum functional point voltage of solar panels, thus make the storage battery being connected on low voltage side B1 obtain maximum chargings.
When solar panels voltage is lower than battery tension, storage battery is connected on high-voltage side, circuit working is in synchronous voltage booster circuit control model, inductive current direction is from 2 ends to 1 end, first field effect transistor Q1 prevents reverse connection of accumulator to the damage of the first electric capacity C1, buck module by control second field effect transistor Q2, the on/off of the 3rd field effect transistor Q3 and the charge/discharge of inductance L 1, makes the voltage on the second electric capacity C2 be the maximum functional point voltage of solar panels.
The utility model adopts the second field effect transistor Q2 and the 3rd 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 storage battery, heating also can be made to reduce simultaneously, be conducive to reducing heating, raise the efficiency.Voltage the higher person between solar panels and storage battery is connected in high voltage one end of buck module, low voltage side connects voltage junior between solar panels or storage battery, system is selected to be operated in step-down charge mode or boost charge pattern automatically, greatly facilitates project installation.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (2)
1. can the photovoltaic charged control circuit of MPPT of two-way charging, comprise high-voltage side A1, low voltage side B1, buck module, control and display section, solar panels and storage battery, is characterized in that, described buck module connects high-voltage side A1 respectively, low voltage side B1, control and display section, described solar panels and storage battery are connected on high-voltage side A1 or on low voltage side B1, and described buck module comprises 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 L 1, 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, 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 L 1 and the 3rd 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, inductance L 1 other end connect respectively the second electric capacity C2 other end and and the second resistance R2, the 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, storage battery is connected on high-voltage side A1, in control and display section, switch corresponding for storage battery is adjusted to high voltage end simultaneously; When solar panels voltage is higher than battery tension, solar panels are connected on high-voltage side A1, and storage battery is connected on low voltage side B1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016175.1U CN204425258U (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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| CN201520016175.1U CN204425258U (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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| CN204425258U true CN204425258U (en) | 2015-06-24 |
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| CN201520016175.1U Expired - Fee Related CN204425258U (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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883120A (en) * | 2015-01-12 | 2015-09-02 | 深圳硕日新能源科技有限公司 | MPPT photovoltaic charging control circuit capable of bidirectional charging |
| CN109698547A (en) * | 2019-03-04 | 2019-04-30 | 深圳源创智能照明有限公司 | A kind of solar controller of multiple-way supply |
-
2015
- 2015-01-12 CN CN201520016175.1U patent/CN204425258U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883120A (en) * | 2015-01-12 | 2015-09-02 | 深圳硕日新能源科技有限公司 | MPPT photovoltaic charging control circuit capable of bidirectional charging |
| CN104883120B (en) * | 2015-01-12 | 2016-06-08 | 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 |
| CN109698547A (en) * | 2019-03-04 | 2019-04-30 | 深圳源创智能照明有限公司 | A kind of solar controller of multiple-way supply |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20170112 |