CN202856434U - Load charging circuit of photovoltaic MPPT controller - Google Patents
Load charging circuit of photovoltaic MPPT controller Download PDFInfo
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- CN202856434U CN202856434U CN2012204790848U CN201220479084U CN202856434U CN 202856434 U CN202856434 U CN 202856434U CN 2012204790848 U CN2012204790848 U CN 2012204790848U CN 201220479084 U CN201220479084 U CN 201220479084U CN 202856434 U CN202856434 U CN 202856434U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a load charging circuit of a photovoltaic MPPT controller. The load charging circuit is worked with a storage battery voltage detection circuit and a storage battery voltage display circuit of the controller. Through the circuit, a solar panel can directly supply power to a load. Compared with the prior art, the load charging circuit has the advantages that: the structure of a load charging circuit of the photovoltaic MPPT controller is simple, if PWM control voltage can not reach a required power, the voltage of a storage battery is higher than power supply voltage, in this way, the storage battery directly supplies power to the load through a Schottky diode with low power consumption, thus the normal working of a system can be ensured, the system works in a stable state, and a purpose of convenient use is achieved. In addition, when a PA5 port of the controller is in the state of a high level, the solar panel can directly supply power to the load, thus the usage rate of the panel is raised, and the power loss of intermediate links is reduced.
Description
Technical field
The utility model relates to a kind of charge circuit, specifically refers to a kind of load charge circuit of photovoltaic MPPT controller, is used for solar panel directly to charge to load.
Background technology
MPPT(Maximum Power Point Tracking) controller for solar is the upgraded product of traditional solar charging/discharging controller.So-called MPPT maximum power point tracking namely refers to the generating voltage that controller can the detecting real-time solar panel, and follows the trail of ceiling voltage current value (VI), make system with the highest efficient to charge in batteries.In other words, the MPPT controller is understood the power points of the maximum in the real-time tracking solar panel, has given play to the maximum effect of solar panel.Voltage is higher, by maximal power tracing, just can export more electric weight, thereby improves charge efficiency.Theoretically, use the solar power system of MPPT controller to improve 50% than traditional efficient, but with factually border test, because surrounding environment influence and various energy loss, final efficient also can improve 20%-30%.But, owing to there not being the circuit that can directly charge to load in the existing controller for solar, thereby when load charged, cell panel must at first charge to storage battery, and then by storage battery load is charged, thereby cause power loss larger, operating efficiency is lower.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, and a kind of power loss that reduces the load charging process that is beneficial to is provided, the load charge circuit of the photovoltaic MPPT controller of increasing work efficiency.
The utility model solves the problems of the technologies described above the technical scheme that adopts: the load charge circuit of this photovoltaic MPPT controller, comprise solar recharging loop and load blocks, it is characterized in that: the earth terminal while in this solar recharging loop and the emitter of the first triode, the emitter of the second triode, the positive pole of the first end of the first resistance and the 3rd diode links to each other, the output while in this solar recharging loop and the negative pole of described the 3rd diode, the first end of the second resistance, the negative pole end of voltage-stabiliser tube, the first end of the 3rd resistance and the grid of field effect transistor link to each other, the second end of described the second resistance links to each other with the second end of the first resistance, other has the first electric capacity and the first diode all to be in parallel with described the first resistance, the positive pole of described voltage-stabiliser tube, the second end of the 3rd resistance and the source electrode of described field effect transistor link to each other with the first end of the 4th resistance simultaneously, the second end of the 4th resistance links to each other with the collector electrode of described the first triode, be serially connected with the 5th resistance between the collector electrode of the base stage of described the first triode and the second triode, the collector electrode of described the second triode links to each other with the PWM port of controller by the 6th resistance, and the base stage of described the second triode links to each other with the PA5 port of controller by the 7th resistance; The drain electrode of described field effect transistor links to each other with the positive pole of Schottky diode, the negative pole while of this Schottky diode and the positive pole of the 4th diode, the first end of the 8th resistance and the input of described load blocks link to each other, the negative pole of the 4th diode connects the A1 port of described controller, the second end while of the 8th resistance and the first end of the second electric capacity, the first end of the negative pole of the second diode and the 9th resistance links to each other, the second end of described the second electric capacity, be connected to the earth terminal of described load blocks after the continuous also ground connection of the second end of anodal and the 9th resistance of the second diode and the ground connection by fuse.
Preferably, described field effect transistor is depletion type P raceway groove isolated gate FET.
Further preferred, the size of described the first electric capacity and the second electric capacity is 0.01uF.
In order to make this charge circuit normal operation, the voltage stabilization at described voltage-stabiliser tube two ends is at 10V.
Compared with prior art, the utility model has the advantage of: the load charge circuit structure of this photovoltaic MPPT controller is comparatively simple, if in a single day pwm voltage does not reach power demand, then the voltage of storage battery is higher than supply power voltage, and like this, storage battery is by the Schottky diode of a low-power consumption, direct powering load, can the assurance system work like this, can make again system works a stable state, reach the convenient purpose of using.In addition, when the PA5 of controller port is the state of high level, solar panel is directly powered to the load, thereby improve the utilization rate of cell panel, the power loss of cutting down the number of intermediate links.
Description of drawings
Fig. 1 is the circuit structure block diagram of the utility model embodiment.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
The load charge circuit of the MPPT controller in the present embodiment and accumulator voltage detecting circuit and battery tension display circuit cooperating are used for making solar panel directly to charge to load.Particularly,
The load charge circuit of this photovoltaic MPPT controller, comprise solar recharging loop J1 and load blocks J2, the earth terminal while of this solar recharging loop J1 and the emitter of the first triode Q1, the emitter of the second triode Q2, the positive pole of the first end of the first resistance R 1 and the 3rd diode D3 links to each other, the output while of this solar recharging loop J1 and the negative pole of described the 3rd diode D3, the first end of the second resistance R 2, the negative pole end of voltage-stabiliser tube D5, the grid of the first end of the 3rd resistance R 3 and field effect transistor Q3 links to each other, the second end of described the second resistance R 2 links to each other with the second end of the first resistance R 1, other has the first capacitor C 1 and the first diode D1 all to be in parallel with described the first resistance R 1, the positive pole of described voltage-stabiliser tube D5, the second end of the 3rd resistance R 3 and the source electrode of field effect transistor Q3 link to each other with the first end of the 4th resistance R 4 simultaneously, the second end of the 4th resistance R 4 links to each other with the collector electrode of described the first triode Q1, be serially connected with the 5th resistance R 5 between the collector electrode of the base stage of the first triode Q1 and the second triode Q2, the collector electrode of the second triode Q2 links to each other with the PWM port of controller by the 6th resistance R 6, and the base stage of the second triode Q2 links to each other with the PA5 port of controller by the 7th resistance R 7.
The drain electrode of field effect transistor Q3 links to each other with the positive pole of Schottky diode D6, the negative pole while of this Schottky diode D6 and the positive pole of the 4th diode D4, the first end of the 8th resistance R 8 and the input of described load blocks J2 link to each other, the negative pole of the 4th diode D4 connects the A1 port of described controller, the second end while and the second capacitor C 2 first ends of the 8th resistance R 8, the first end of the negative pole of the second diode D2 and the 9th resistance R 9 links to each other, the second end of described the second capacitor C 2, be connected to the earth terminal of load blocks J2 after the continuous also ground connection of the second end of anodal and the 9th resistance R 9 of the second diode D2 and the ground connection by fuse F.
Especially, the field effect Q3 of the present embodiment is depletion type P raceway groove isolated gate FET.The size of the first capacitor C 1 and the second capacitor C 2 is 0.01uF, and the voltage stabilization at voltage-stabiliser tube D5 two ends is at 10V.
Claims (4)
1. the load charge circuit of a photovoltaic MPPT controller, comprise solar recharging loop (J1) and load blocks (J2), it is characterized in that: the earth terminal while in this solar recharging loop (J1) and the emitter of the first triode (Q1), the emitter of the second triode (Q2), the positive pole of the first end of the first resistance (R1) and the 3rd diode (D3) links to each other, the output while in this solar recharging loop (J1) and the negative pole of described the 3rd diode (D3), the first end of the second resistance (R2), the negative pole end of voltage-stabiliser tube (D5), the grid of the first end of the 3rd resistance (R3) and field effect transistor (Q3) links to each other, the second end of described the second resistance (R2) links to each other with the second end of the first resistance (R1), other has the first electric capacity (C1) and the first diode (D1) all to be in parallel with described the first resistance (R1), the positive pole of described voltage-stabiliser tube (D5), the source electrode of the second end of the 3rd resistance (R3) and described field effect transistor (Q3) links to each other with the first end of the 4th resistance (R4) simultaneously, the second end of the 4th resistance (R4) links to each other with the collector electrode of described the first triode (Q1), be serially connected with the 5th resistance (R5) between the collector electrode of the base stage of described the first triode (Q1) and the second triode (Q2), the collector electrode of described the second triode (Q2) links to each other with the PWM port of controller by the 6th resistance (R6), and the base stage of described the second triode (Q2) links to each other with the PA5 port of controller by the 7th resistance (R7); The drain electrode of described field effect transistor (Q3) links to each other with the positive pole of Schottky diode (D6), the negative pole while of this Schottky diode (D6) and the positive pole of the 4th diode (D4), the input of the first end of the 8th resistance (R8) and described load blocks (J2) links to each other, the negative pole of the 4th diode (D4) connects the A1 port of described controller, the second end while of the 8th resistance (R8) and the first end of the second electric capacity (C2), the first end of the negative pole of the second diode (D2) and the 9th resistance (R9) links to each other, the second end of described the second electric capacity (C2), be connected to the earth terminal of described load blocks (J2) after the continuous also ground connection of the second end of anodal and the 9th resistance (R9) of the second diode (D2) and the ground connection by fuse (F).
2. the load charge circuit of photovoltaic MPPT controller according to claim 1 is characterized in that: described field effect transistor (Q3) is depletion type P raceway groove isolated gate FET.
3. the load charge circuit of photovoltaic MPPT controller according to claim 1 and 2, it is characterized in that: the size of described the first electric capacity (C1) and the second electric capacity (C2) is 0.01uF.
4. the load charge circuit of photovoltaic MPPT controller according to claim 1 and 2, it is characterized in that: the voltage stabilization at described voltage-stabiliser tube (D5) two ends is at 10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204790848U CN202856434U (en) | 2012-09-19 | 2012-09-19 | Load charging circuit of photovoltaic MPPT controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204790848U CN202856434U (en) | 2012-09-19 | 2012-09-19 | Load charging circuit of photovoltaic MPPT controller |
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| Publication Number | Publication Date |
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| CN202856434U true CN202856434U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204790848U Expired - Fee Related CN202856434U (en) | 2012-09-19 | 2012-09-19 | Load charging circuit of photovoltaic MPPT controller |
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| CN (1) | CN202856434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634105A (en) * | 2016-01-19 | 2016-06-01 | 深圳友铂科技有限公司 | Local maximum power tracking charging system for 10kV cable terminal |
-
2012
- 2012-09-19 CN CN2012204790848U patent/CN202856434U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634105A (en) * | 2016-01-19 | 2016-06-01 | 深圳友铂科技有限公司 | Local maximum power tracking charging system for 10kV cable terminal |
| CN105634105B (en) * | 2016-01-19 | 2017-12-26 | 深圳森蓝忠信科技有限公司 | A kind of 10kV cable terminations local maxima power tracking charging system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20140919 |
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| EXPY | Termination of patent right or utility model |