CN102545602A - Load power loop for MPPT (maximum power point tracking) solar charging controller based on PSoC (programmable system on chip) - Google Patents
Load power loop for MPPT (maximum power point tracking) solar charging controller based on PSoC (programmable system on chip) Download PDFInfo
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- CN102545602A CN102545602A CN2010106070828A CN201010607082A CN102545602A CN 102545602 A CN102545602 A CN 102545602A CN 2010106070828 A CN2010106070828 A CN 2010106070828A CN 201010607082 A CN201010607082 A CN 201010607082A CN 102545602 A CN102545602 A CN 102545602A
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Abstract
The invention relates to a load power loop for an MPPT (maximum power point tracking) solar charging controller based on a PSoC (programmable system on chip). The load power loop comprises a storage battery voltage sampling unit, a drive unit, an output control unit, a load current sampling unit, a resistor R21 and a resistor R22, wherein the storage battery voltage sampling unit is provided with a resistor R15, a resistor R16 and a capacitor C16; the drive unit is provided with a resistor R17, a resistor R18, a resistor R19, a resistor 20, a triode Q4, a triode Q5, a triode Q6 and a triode Q7; an MOSFET (metal-oxide-semiconductor field effect transistor) Q8 is adopted as the output control unit; and a resistor 23 is adopted as the load current sampling unit. The load power loop provided by the invention can be matched with the MPPT solar charging controller based on the PSoC, and has the characteristics of high efficiency and low cost.
Description
Technical field
The present invention relates to the solar charging controller technology, particularly relate to a kind of bearing power loop of the MPPT type solar charging controller based on PSoC.
Background technology
Solar energy has environmental protection, good characteristic such as pollution-free, becomes the direction of modern society's energy development.In heliotechnics, one of most important technology is exactly a solar charging controller.
In the prior art, a lot of solar charging controllers are arranged on the market, but all come with some shortcomings; The solar charging controller of some simple types is after storage battery is full of; Be the protection storage battery, the both positive and negative polarity of solar panel is carried out short circuit, can cause the joint temperature of solar panel array too high like this; Damage solar panel easily, the useful life of reducing solar panel.Part solar charging controller does not have maximum power electric tracing (MPPT) function of solar cell, causes the energy conversion efficiency (generated output) of solar panel to can not get effective raising.Also there is solar charging controller all to adopt microcontroller and peripheral discrete component to constitute; Cause the circuit system complex structure; Simultaneously, signal conditioning circuit all is to be realized by the discrete circuit of periphery, discrete component exist consistency relatively poor, exist temperature to float shortcomings such as bigger.
Not enough to prior art, not enough based on the MPPT type solar charging controller of PSoC to solve prior art, so provide a kind of and very necessary based on the supporting suitable bearing power loop of the MPPT type solar charging controller of PSoC.
Summary of the invention
The objective of the invention is to avoid the weak point of prior art and a kind of bearing power loop of the MPPT type solar charging controller based on PSoC is provided, this bearing power loop can provide VDD1, VDD2 and three kinds of voltages of VDD3.
The object of the invention is realized through following technical measures.
A kind of bearing power loop of the MPPT type solar charging controller based on PSoC is provided with battery tension sampling unit, driver element, output control unit, load current sampling unit, resistance R 21 and resistance R 22;
Said battery tension sampling unit is provided with resistance R 15, resistance R 16 and capacitor C 16;
Said driver element is provided with resistance R 17, resistance R 18, resistance R 19, resistance R 20, triode Q4, triode Q5, triode Q6 and triode Q7;
Said output control unit is set to MOSFET pipe Q8;
Said load current sampling unit is set to resistance R 23;
One end of resistance R 15, load positive pole are connected with battery positive voltage, and an end of the other end of resistance R 15, resistance R 16, an end of capacitor C 16 are connected with the Battsense end;
One end of resistance R 17 is connected with the Loadctrl end, and an end of the other end of resistance R 17, resistance R 18, the base stage of triode Q4 connect, and an end of the collector electrode of triode Q4, resistance R 19 is connected with the base stage of triode Q5;
One end of the collector electrode of triode Q5, resistance R 20, the base stage of triode Q6 are connected with the base stage of triode Q7;
The collector electrode of the other end of the other end of resistance R 19, resistance R 20, triode Q6 is connected with VDD1; The emitter-base bandgap grading of the emitter-base bandgap grading of triode Q6, triode Q7 is connected with an end of resistance R 21; One end of the other end of resistance R 21, resistance R 22 is connected with the grid of MOSFET pipe Q8; The drain electrode of MOSFET pipe Q8 is connected with the load negative pole, and the source electrode of MOSFET pipe Q8 is connected with an end of resistance R 23;
The other end ground connection of the other end of the other end of the emitter-base bandgap grading of the emitter-base bandgap grading of the collector electrode of the other end of the other end of resistance R 23, resistance R 22, triode Q7, triode Q5, triode Q4, resistance R 18, capacitor C 16, resistance R 16.
The model of said triode Q4 is MMBT4401.
The model of said triode Q5 is MMBT4401.
The model of said triode Q6 is MMBT4401.
The model of said triode Q7 is MMBT4403.
The model of said MOSFET pipe Q8 is IRF3205.
Said resistance R 15 is 330K ohm, and said resistance R 16 is 30K ohm, and said capacitor C 16 is 1uF.
Said resistance R 17 is 20K ohm, and said resistance R 18 is 200K ohm, and said resistance R 19 is 100K ohm, and said resistance R 20 is 100K ohm.
Said resistance R 23 is 2 milliohms.
Said resistance R 21 is 20 ohm, and said resistance R 22 is 10K ohm.
The bearing power loop of a kind of MPPT type solar charging controller based on PSoC of the present invention is provided with battery tension sampling unit, driver element, output control unit, load current sampling unit, resistance R 21 and resistance R 22; Said battery tension sampling unit is provided with resistance R 15, resistance R 16 and capacitor C 16; Said driver element is provided with resistance R 17, resistance R 18, resistance R 19, resistance R 20, triode Q4, triode Q5, triode Q6 and triode Q7; Said output control unit is set to MOSFET pipe Q8; Said load current sampling unit is set to resistance R 23; One end of resistance R 15, load positive pole are connected with battery positive voltage, and an end of the other end of resistance R 15, resistance R 16, an end of capacitor C 16 are connected with the Battsense end; One end of resistance R 17 is connected with the Loadctrl end, and an end of the other end of resistance R 17, resistance R 18, the base stage of triode Q4 connect, and an end of the collector electrode of triode Q4, resistance R 19 is connected with the base stage of triode Q5; One end of the collector electrode of triode Q5, resistance R 20, the base stage of triode Q6 are connected with the base stage of triode Q7; The collector electrode of the other end of the other end of resistance R 19, resistance R 20, triode Q6 is connected with VDD1; The emitter-base bandgap grading of the emitter-base bandgap grading of triode Q6, triode Q7 is connected with an end of resistance R 21; One end of the other end of resistance R 21, resistance R 22 is connected with the grid of MOSFET pipe Q8; The drain electrode of MOSFET pipe Q8 is connected with the load negative pole, and the source electrode of MOSFET pipe Q8 is connected with an end of resistance R 23; The other end ground connection of the other end of the other end of the emitter-base bandgap grading of the emitter-base bandgap grading of the collector electrode of the other end of the other end of resistance R 23, resistance R 22, triode Q7, triode Q5, triode Q4, resistance R 18, capacitor C 16, resistance R 16.The bearing power loop of the MPPT type solar charging controller based on PSoC of the present invention can be used with the MPPT type solar charging controller based on PSoC, has the characteristics of high-efficiency and low-cost.
Description of drawings
Utilize accompanying drawing that the present invention is further described, but the content in the accompanying drawing does not constitute any restriction of the present invention.
Fig. 1 is the bearing power loop circuit figure of a kind of MPPT type solar charging controller based on PSoC of the present invention.
Among Fig. 1, comprising:
Battery tension sampling unit 100,
Load current sampling unit 400.
Embodiment
In conjunction with following examples the present invention is further described.
See Fig. 1, a kind of bearing power loop of the MPPT type solar charging controller based on PSoC is provided with battery tension sampling unit 100, driver element 200, output control unit 300, load current sampling unit 400, resistance R 21 and resistance R 22.
Battery tension sampling unit 100 is provided with resistance R 15, resistance R 16 and capacitor C 16.
Load current sampling unit 400 is set to resistance R 23, and precision resistance R23 goes up the voltage differential signal LoadCurV+ and the LoadCurV-that produce and send the PSoC central processing unit to carry out the difference amplification, and then carries out the A/D conversion.
One end of resistance R 15, load positive pole are connected with battery positive voltage, and an end of the other end of resistance R 15, resistance R 16, an end of capacitor C 16 are connected with the Battsense end, and voltage division signal Battsense delivers to the PSoC central processing unit and carries out the A/D conversion.
One end of resistance R 17 is connected with the Loadctrl end, and an end of the other end of resistance R 17, resistance R 18, the base stage of triode Q4 connect, and an end of the collector electrode of triode Q4, resistance R 19 is connected with the base stage of triode Q5.
One end of the collector electrode of triode Q5, resistance R 20, the base stage of triode Q6 are connected with the base stage of triode Q7.
The collector electrode of the other end of the other end of resistance R 19, resistance R 20, triode Q6 is connected with VDD1; The emitter-base bandgap grading of the emitter-base bandgap grading of triode Q6, triode Q7 is connected with an end of resistance R 21; One end of the other end of resistance R 21, resistance R 22 is connected with the grid of MOSFET pipe Q8; The drain electrode of MOSFET pipe Q8 is connected with the load negative pole, and the source electrode of MOSFET pipe Q8 is connected with an end of resistance R 23.
The other end ground connection of the other end of the other end of the emitter-base bandgap grading of the emitter-base bandgap grading of the collector electrode of the other end of the other end of resistance R 23, resistance R 22, triode Q7, triode Q5, triode Q4, resistance R 18, capacitor C 16, resistance R 16.
The model of said triode Q4 is MMBT4401.
The model of said triode Q5 is MMBT4401.
The model of said triode Q6 is MMBT4401.
The model of said triode Q7 is MMBT4403.
The model of said MOSFET pipe Q8 is IRF3205.
Said resistance R 15 is 330K ohm, and said resistance R 16 is 30K ohm, and said capacitor C 16 is 1uF.
Said resistance R 17 is 20K ohm, and said resistance R 18 is 200K ohm, and said resistance R 19 is 100K ohm, and said resistance R 20 is 100K ohm.
Said resistance R 23 is 2 milliohms.
Said resistance R 21 is 20 ohm, and said resistance R 22 is 10K ohm.
Operation principle of the present invention is: precision resistance R15, R16 and capacitor C 16 constitute battery tension sampling unit 100, and voltage division signal Battsense delivers to the PSoC central processing unit and carries out the A/D conversion.Q8 is the power MOSFET tube of control load power loop output, and precision resistance R23 constitutes load current sampling unit 400.The positive pole of the output port in bearing power loop is connected with battery positive voltage output BAT+, and negative pole is connected with the drain electrode of power MOSFET Q8.Precision resistance R23 one end connects the source electrode of power MOSFET Q8, and the other end is connected with public ground GND.Precision resistance R23 goes up the voltage differential signal LoadCurV+ and the LoadCurV-that produce and send the PSoC central processing unit to carry out the difference amplification, and then carries out the A/D conversion.Resistance R 17, R18, R19, R20 and triode Q4, Q5, Q6, Q7 form the drive circuit of MOSFET unit, bearing power loop.The load circuit power output control signal LoadCtrl that the PSoC central processing unit sends is connected through the base stage of resistance R 17 and triode Q4; The emitter of triode Q4 is connected with public ground GND, and the base stage of triode Q4 is connected with public ground GND through pull down resistor R18.The collector electrode of triode Q4 is connected with the base stage of triode Q5, is connected with power vd D1 through pull-up resistor R19 simultaneously.The base stage of the collector electrode of triode Q5 and triode Q6, the base stage of triode Q7 are connected, and are connected with power vd D1 through pull-up resistor R20 simultaneously.The emitter of triode Q5 is connected with public ground GND.Triode Q6 and Q7 constitute push-pull output circuit, and the collector electrode of triode Q6 is connected with power vd D1, and its emitter is connected with the emitter of triode Q7, and the collector electrode of Q7 is connected with public ground GND.The emitter of triode Q6 is connected through the grid of resistance R 21 and power MOSFET Q8, and the grid of power MOSFET Q8 is connected with public ground GND through resistance R 22 simultaneously.
The present invention through battery tension sampling unit 100 with the signal conveys of storage battery to the PSOC central processing unit; And gather load current signals through load current sampling unit 400 and be delivered to the PSOC central processing unit; The instruction of PSOC central processing unit output loading channel selector; Driver element 200 receives the switch command of PSOC central processing unit output, control output control unit 300.So can control more accurate to the electric power thus supplied of load according to the situation adjustment in time of storage battery and load.And circuit structure is simple, and integrated level is high, and is with low cost.
Need to prove that the electronic devices and components parameter among the present invention is not limited only to the parameter of present embodiment, can change within the specific limits.
Should be noted that at last; Above embodiment is only in order to technical scheme of the present invention to be described but not to the restriction of protection range of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.
Claims (10)
1. the bearing power loop based on the MPPT type solar charging controller of PSoC is characterized in that: be provided with battery tension sampling unit, driver element, output control unit, load current sampling unit, resistance R 21 and resistance R 22;
Said battery tension sampling unit is provided with resistance R 15, resistance R 16 and capacitor C 16;
Said driver element is provided with resistance R 17, resistance R 18, resistance R 19, resistance R 20, triode Q4, triode Q5, triode Q6 and triode Q7;
Said output control unit is set to MOSFET pipe Q8;
Said load current sampling unit is set to resistance R 23;
One end of resistance R 15, load positive pole are connected with battery positive voltage, and an end of the other end of resistance R 15, resistance R 16, an end of capacitor C 16 are connected with the Battsense end;
One end of resistance R 17 is connected with the Loadctrl end, and an end of the other end of resistance R 17, resistance R 18 is connected with the base stage of triode Q4, and an end of the collector electrode of triode Q4, resistance R 19 is connected with the base stage of triode Q5;
One end of the collector electrode of triode Q5, resistance R 20, the base stage of triode Q6 are connected with the base stage of triode Q7;
The collector electrode of the other end of the other end of resistance R 19, resistance R 20, triode Q6 is connected with VDD1; The emitter-base bandgap grading of the emitter-base bandgap grading of triode Q6, triode Q7 is connected with an end of resistance R 21; One end of the other end of resistance R 21, resistance R 212 is connected with the grid of MOSFET pipe Q8; The drain electrode of MOSFET pipe Q8 is connected with the load negative pole, and the source electrode of MOSFET pipe Q8 is connected with an end of resistance R 23;
The other end ground connection of the other end of the other end of the emitter-base bandgap grading of the emitter-base bandgap grading of the collector electrode of the other end of the other end of resistance R 23, resistance R 22, triode Q7, triode Q5, triode Q4, resistance R 18, capacitor C 16, resistance R 16.
2. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: the model of said triode Q4 is MMBT4401.
3. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: the model of said triode Q5 is MMBT4401.
4. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: the model of said triode Q6 is MMBT4401.
5. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: the model of said triode Q7 is MMBT4403.
6. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1 is characterized in that: the model of said MOSFET pipe Q8 is IRF3205.
7. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1 is characterized in that: said resistance R 15 is 330K ohm, and said resistance R 16 is 30K ohm, and said capacitor C 16 is 1uF.
8. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1; It is characterized in that: said resistance R 17 is 20K ohm; Said resistance R 18 is 200K ohm, and said resistance R 19 is 100K ohm, and said resistance R 20 is 100K ohm.
9. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: said resistance R 23 is 2 milliohms.
10. the bearing power loop of the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: said resistance R 21 is 20 ohm, said resistance R 22 is 10K ohm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106070828A CN102545602A (en) | 2010-12-27 | 2010-12-27 | Load power loop for MPPT (maximum power point tracking) solar charging controller based on PSoC (programmable system on chip) |
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| CN2010106070828A CN102545602A (en) | 2010-12-27 | 2010-12-27 | Load power loop for MPPT (maximum power point tracking) solar charging controller based on PSoC (programmable system on chip) |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3428820B2 (en) * | 1996-06-11 | 2003-07-22 | キヤノン株式会社 | Charging device |
| CN101242107A (en) * | 2008-03-18 | 2008-08-13 | 北京交通大学 | Self-adaptive solar charging controller |
| CN201467524U (en) * | 2009-04-02 | 2010-05-12 | 珈伟太阳能科技(上海)有限公司 | Intelligent controller of solar string light |
| CN101872802A (en) * | 2010-05-14 | 2010-10-27 | 临沂巨皇新能源科技发展有限公司 | Repairing device of photovoltaic batteries of streetlight controller |
-
2010
- 2010-12-27 CN CN2010106070828A patent/CN102545602A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3428820B2 (en) * | 1996-06-11 | 2003-07-22 | キヤノン株式会社 | Charging device |
| CN101242107A (en) * | 2008-03-18 | 2008-08-13 | 北京交通大学 | Self-adaptive solar charging controller |
| CN201467524U (en) * | 2009-04-02 | 2010-05-12 | 珈伟太阳能科技(上海)有限公司 | Intelligent controller of solar string light |
| CN101872802A (en) * | 2010-05-14 | 2010-10-27 | 临沂巨皇新能源科技发展有限公司 | Repairing device of photovoltaic batteries of streetlight controller |
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Application publication date: 20120704 |