CN102545287A - MPPT(Maximum Power Point Tracking)-type solar charging controller based on PSoC (Programmable System On Chip) - Google Patents
MPPT(Maximum Power Point Tracking)-type solar charging controller based on PSoC (Programmable System On Chip) Download PDFInfo
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- CN102545287A CN102545287A CN2010106072325A CN201010607232A CN102545287A CN 102545287 A CN102545287 A CN 102545287A CN 2010106072325 A CN2010106072325 A CN 2010106072325A CN 201010607232 A CN201010607232 A CN 201010607232A CN 102545287 A CN102545287 A CN 102545287A
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Abstract
The invention discloses an MPPT(Maximum Power Point Tracking)-type solar charging controller based on PSoC (Programmable System On Chip), which is provided with a solar battery, a storage battery, a fuse, a power supply switching circuit, a PWM (Pulse-Width Modulation) driving circuit, a PSoC central processor, a charging loop, a load power driving circuit, a load power output control circuit, a solar battery voltage sampling circuit, a charging current sampling circuit, a storage battery voltage sampling circuit, a load current sampling circuit, a lightning-proof protective circuit, a backflow-proof circuit, a temperature sensor, a control key array and an acousto-optic display alarm circuit. The PWM charging mode is adopted by the MPPT-type solar charging controller based on PSoC, the MPPT technology is adopted to intelligently regulate the voltage of a solar energy battery working point, so that the solar battery works in a maximum power output status, the solar battery is intelligently controlled to charge the storage battery, and the direct-current load is supplied with power.
Description
Technical field
The present invention relates to the solar charging controller technology, particularly relate to a kind of 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, provide a kind of MPPT type solar charging controller very necessary to solve the prior art deficiency based on PSoC.
Summary of the invention
The objective of the invention is to avoid the weak point of prior art and provide that a kind of high efficiency, low cost, high integration, strong security, peripheral circuit are simplified, battery management more accurately, system's MPPT type solar charging controller based on PSoC of intelligence more.
The object of the invention is realized through following technical measures.
A kind of MPPT type solar charging controller based on PSoC is provided with solar cell, storage battery, fuse, power-switching circuit, PWM drive circuit, PSoC central processing unit, charge circuit, bearing power drive circuit, bearing power output control circuit, solar array voltage sample circuit, charging current sample circuit, battery tension sample circuit and load current sample circuit;
One end of the positive pole of solar cell, solar array voltage sample circuit is connected with 810 ends of charging current sample circuit, and the other end of solar cell sample circuit is connected with 420 ends of PSoC central processing unit,
830 ends of charging current sample circuit are connected with 410 ends of PSoC central processing unit;
820 ends of charging current sample circuit are connected with 510 ends of charge circuit, and an end of 520 ends of charge circuit, an end of battery tension sample circuit, fuse is connected with the positive terminal of output loading;
The other end of battery tension sample circuit is connected with 430 ends of PSoC central processing unit;
350 ends of the negative pole of solar cell, power-switching circuit, the negative pole of storage battery are connected with 1310 ends of load current sample circuit;
The positive pole of storage battery is connected with the other end of fuse; 310 ends of power-switching circuit are connected with 910 ends of bearing power drive circuit; 320 ends of power-switching circuit are connected with 610 ends of PWM drive circuit, and 330 ends of power-switching circuit are connected with 450 ends of PSoC central processing unit;
440 ends of PSoC central processing unit are connected with 630 ends of PWM drive circuit, and 620 ends of PWM drive circuit are connected with 530 ends of charge circuit;
1330 ends of load current sample circuit are connected with 460 ends of PSoC central processing unit, and 1320 ends of load current sample circuit are connected with 1110 ends of bearing power output control circuit;
470 ends of PSoC central processing unit are connected with 920 ends of bearing power drive circuit, and 930 ends of bearing power drive circuit are connected with 1120 ends of bearing power output control circuit, and 1130 ends of bearing power output control circuit are connected with the negative pole of output loading.
The model of said PSoC central processing unit is CY8CLED03D01.
Be provided with lightning protection circuit, an end of said lightning protection circuit is connected with the positive pole of solar cell, and the other end of said lightning protection circuit is connected with the negative pole of solar cell.
Said lightning protection circuit is set to the transient voltage restraining diode, and said transient voltage restraining diode one end is connected with the positive pole of solar cell, and the other end of said transient voltage restraining diode is connected with the negative pole of solar cell.
Be provided with the anti-backflow circuit, an end of said anti-backflow circuit is connected with 520 ends of said charge circuit, and the other end of said anti-backflow circuit is connected with an end, the output loading positive terminal of battery tension sample circuit.
Be provided with temperature sensor, said temperature sensor is connected with 480 ends of said PSoC central processing unit.
Said temperature sensor is mounted on said storage battery.
The model of said temperature sensor is LM75.
Be provided with the control push-button array, said control push-button array is connected with 490 ends of said PSoC central processing unit.
Be provided with the acoustooptic display alarm circuit, said acoustooptic display alarm circuit is connected with 491 ends of said PSoC central processing unit.
A kind of MPPT type solar charging controller based on PSoC of the present invention is provided with solar cell, storage battery, fuse, power-switching circuit, PWM drive circuit, PSoC central processing unit, charge circuit, bearing power drive circuit, bearing power output control circuit, solar array voltage sample circuit, charging current sample circuit, battery tension sample circuit and load current sample circuit; One end of the positive pole of solar cell, solar array voltage sample circuit is connected with 810 ends of charging current sample circuit; The other end of solar cell sample circuit is connected with 420 ends of PSoC central processing unit, and 830 ends of charging current sample circuit are connected with 410 ends of PSoC central processing unit; 820 ends of charging current sample circuit are connected with 510 ends of charge circuit, and an end of 520 ends of charge circuit, an end of battery tension sample circuit, fuse is connected with the positive terminal of output loading; The other end of battery tension sample circuit is connected with 430 ends of PSoC central processing unit; 350 ends of the negative pole of solar cell, power-switching circuit, the negative pole of storage battery are connected with 1310 ends of load current sample circuit; The positive pole of storage battery is connected with the other end of fuse; 310 ends of power-switching circuit are connected with 910 ends of bearing power drive circuit; 320 ends of power-switching circuit are connected with 610 ends of PWM drive circuit, and 330 ends of power-switching circuit are connected with 450 ends of PSoC central processing unit; 440 ends of PSoC central processing unit are connected with 630 ends of PWM drive circuit, and 620 ends of PWM drive circuit are connected with 530 ends of charge circuit; 1330 ends of load current sample circuit are connected with 460 ends of PSoC central processing unit, and 1320 ends of load current sample circuit are connected with 1110 ends of bearing power output control circuit; 470 ends of PSoC central processing unit are connected with 920 ends of bearing power drive circuit, and 930 ends of bearing power drive circuit are connected with 1120 ends of bearing power output control circuit, and 1130 ends of bearing power output control circuit are connected with the negative pole of output loading.The present invention adopts the PWM charge mode, has 12V, the automatic recognition function of 24V electric pressure, uses MPPT maximum power point tracking (MPPT) technology
,Intelligence is regulated the solar cell working point voltage, makes solar cell working at the maximum power output state, and the Based Intelligent Control solar cell is to charge in batteries, and DC load is supplied power.The present invention adopts the technical scheme based on PSoC; Internal resource through to the PSoC chip is configured; Make full use of programmable numeral and analog peripheral resource on the PSoC sheet, reduced the component number and the pcb board size of peripheral hardware circuit, improved the integrated level and the confidentiality of system; Overcome the consistency that discrete component exists poor, exist temperature to float big shortcoming, help reducing the hardware cost and the development cost of product itself.
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 structural representation of a kind of MPPT type solar charging controller based on PSoC of the present invention.
In Fig. 1, comprising:
PSoC central processing unit 400, charge circuit 500, bearing power drive circuit 900,
Bearing power output control circuit 1100, solar array voltage sample circuit 700,
Charging current sample circuit 800, battery tension sample circuit 1200,
Load current sample circuit 1300, anti-backflow circuit 1700, control push-button array 1400,
Acoustooptic display alarm circuit 1500, temperature sensor 1600.
Embodiment
In conjunction with following examples the present invention is further described.
See Fig. 1; A kind of MPPT type solar charging controller based on PSoC; Be provided with solar cell 100, storage battery 200, fuse, power-switching circuit 300, PWM drive circuit 600, PSoC central processing unit 400, charge circuit 500, bearing power drive circuit 900, bearing power output control circuit 1100, solar array voltage sample circuit 700, charging current sample circuit 800, battery tension sample circuit 1200 and load current sample circuit 1300, also be provided with lightning protection circuit, anti-backflow circuit 1700, temperature sensor 1600, control push-button array 1400 and acousto-optic Display and Alarm Circuit 1500.
One end of the positive pole of solar cell 100, solar array voltage sample circuit 700 is connected with 810 ends of charging current sample circuit 800, and the other end of solar array voltage sample circuit 700 is connected with 420 ends of PSoC central processing unit 400,
830 ends of charging current sample circuit 800 are connected with 410 ends of PSoC central processing unit 400,
820 ends of charging current sample circuit 800 are connected with 510 ends of charge circuit 500, and an end of 520 ends of charge circuit 500, an end of battery tension sample circuit 1200, fuse is connected with the positive terminal of output loading,
The other end of battery tension sample circuit 1200 is connected with 430 ends of PSoC central processing unit 400,
350 ends of the negative pole of solar cell 100, power-switching circuit 300, the negative pole of storage battery 200 are connected with 1310 ends of load current sample circuit 1300,
The positive pole of storage battery 200 is connected with the other end of fuse; 310 ends of power-switching circuit 300 are connected with 910 ends of bearing power drive circuit 900; 320 ends of power-switching circuit 300 are connected with 610 ends of PWM drive circuit 600; 330 ends of power-switching circuit 300 are connected with 450 ends of PSoC central processing unit 400
440 ends of PSoC central processing unit 400 are connected with 630 ends of PWM drive circuit 600, and 620 ends of PWM drive circuit 600 are connected with 530 ends of charge circuit 500,
1330 ends of load current sample circuit 1300 are connected with 460 ends of PSoC central processing unit 400, and 1320 ends of load current sample circuit 1300 are connected with 1110 ends of bearing power output control circuit 1100,
470 ends of PSoC central processing unit 400 are connected with 920 ends of bearing power drive circuit 900; 930 ends of bearing power drive circuit 900 are connected with 1120 ends of bearing power output control circuit 1100, and 1130 ends of bearing power output control circuit 1100 are connected with the negative pole of output loading.
The model of said PSoC central processing unit 400 is CY8CLED03D01.
One end of lightning protection circuit is connected with the positive pole of solar cell 100, and the other end of said lightning protection circuit is connected with the other end of solar cell 100.Lightning protection circuit is set to the transient voltage restraining diode, and said transient voltage restraining diode one end is connected with the positive pole of solar cell 100, and the other end of said transient voltage restraining diode is connected with the negative pole of solar cell 100.
One end of anti-backflow circuit 1700 is connected with 520 ends of said charge circuit 500, and the other end of said anti-backflow circuit 1700 is connected with an end, the output loading positive terminal of battery tension sample circuit 1200.
Temperature sensor 1600 is connected with 480 ends of said PSoC central processing unit 400, and said temperature sensor 1600 is mounted on said storage battery 200, and the model of temperature sensor 1600 is LM75.
Control push-button array 1400 is connected with 490 ends of said PSoC central processing unit 400.
Acoustooptic display alarm circuit 1500 is connected with 491 ends of said PSoC central processing unit 400.
The present invention adopts the MPPT maximum power point tracking intelligent control algorithm with the core of PSoC central processing unit Unit 400 as system's control
,Through regulating the pwm pulse signal of charge circuit 500, control opening and turn-offing of charge circuits 500 through PWM drive circuit 600, intelligence is regulated the quiescent potential of solar cell 100, makes the power output of solar cell 100 maximum.
PSoC central processing unit 400 can be according to storage battery 200 state-of-charges (SOC), adopt charging control control strategy stage by stage, comprise that tiny stream fills, equalizing charge, directly fill and floating charge, realize the scientific management to storage battery 200 chargings; Simultaneously, PSoC central processing unit 400 intelligent managements the DC load power supply process, can realize the automatic control of DC load power supply and manually control, have under-voltage, cross and put defencive function and reconnect function automatically.When storage battery 200 voltages during in normal condition, the user can through control push-button array 1400 manually control supply power to DC load.When storage battery 200 was under-voltage, PSoC central processing unit 400 sent alarm command, 1500 actions of acoustooptic display alarm circuit, and the prompting user in time charges; When putting appearred in storage battery 200, PSoC central processing unit 400 sent alarm command, 1500 actions of acoustooptic display alarm circuit, and simultaneously, PSoC central processing unit 400 in time cuts off load path through bearing power drive circuit 900, prevents that storage battery 200 from damaging.
The present invention adopts common ground structure circuit topology, and the negative pole of the negative pole of solar cell 100, storage battery 200 connects together.Power-switching circuit 300 produces voltage VDD1, VDD2 and VDD3, and wherein VDD1 gives the bearing power drive circuit 900 power supplies, and VDD2 gives the PWM drive circuit 600 power supplies, and VDD3 gives PSoC central processing unit 400 and other peripheral logical circuit power supplies.
PSoC central processing unit 400 sampling solar cells 100 voltage signals, when overvoltage appears in solar cell 100 voltages, PSoC central processing unit 400 will cut out PWM charging process, realize the input overvoltage protection of charge controller.Load reconnects function automatically and is realized by PSoC central processing unit 400 and bearing power loop.
Load overcurrent, short-circuit protection circuit are realized by being integrated in PSoC inner programmable analog and digital mixing signal array.If load current surpassed the rated current of 1.25 times of controllers in the time of 60 seconds, or the rated current that load current has surpassed 1.5 times of controllers is in the time of 30 seconds, and the malfunction indicator lamp flicker is reported to the police, and controller will cut off output loop.If short trouble appears in load, controller will cut off output loop immediately, and buzzer is reported to the police rapidly, and short trouble has taken place the prompting user.
The present invention compares with product with existing technology, has tangible advantage and beneficial effect:
1, the present invention adopts the technical scheme based on PSoC; Make full use of programmable numeral and analog peripheral resource on the PSoC chip; Peripheral component quantity and pcb board size have been reduced; Improved the integrated level and the confidentiality of system, overcome the consistency that discrete component exists poor, exist temperature to float big shortcoming, reduced cost effectively.
2, charge controller of the present invention adopts ground structure circuit topology altogether, has overcome the shortcoming of solar cell 100 voltage samples difficulty in the common anodal structural circuit topology.
3, PSoC central processing unit 400 adopts the self-adapting intelligent control algolithm, realizes " MPPT+SOC " dual intelligent optimization charging control.
4, PSoC central processing unit Unit 400 are according to storage battery 200 state-of-charges (SOC), adopt charging control control strategy stage by stage, comprise that tiny stream fills, equalizing charge, directly fill and floating charge, realize the scientific management to storage battery 200 chargings.
5, the load over-current protecting unit is realized by being integrated in the inner analog-and digital-mixed signal array of PSoC, has reduced the complexity of peripheral circuit, has improved the integrated level and the reliability of signal processing circuit.
6, defencive function is perfect.Have TVS lightning protection function, have over-charge protective, cross the protection mechanisms such as anti-reverse protection protection of putting protection, load overload protection, input voltage overvoltage protection, electrical short protection, uniqueness, improved reliability of system operation, fail safe.
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 MPPT type solar charging controller based on PSoC is characterized in that: be provided with solar cell, storage battery, fuse, power-switching circuit, PWM drive circuit, PSoC central processing unit, charge circuit, bearing power drive circuit, bearing power output control circuit, solar array voltage sample circuit, charging current sample circuit, battery tension sample circuit and load current sample circuit;
One end of the positive pole of solar cell, solar array voltage sample circuit is connected with 810 ends of charging current sample circuit, and the other end of solar cell sample circuit is connected with 420 ends of PSoC central processing unit,
830 ends of charging current sample circuit are connected with 410 ends of PSoC central processing unit;
820 ends of charging current sample circuit are connected with 510 ends of charge circuit, and an end of 520 ends of charge circuit, an end of battery tension sample circuit, fuse is connected with the positive terminal of output loading;
The other end of battery tension sample circuit is connected with 430 ends of PSoC central processing unit;
350 ends of the negative pole of solar cell, power-switching circuit, the negative pole of storage battery are connected with 1310 ends of load current sample circuit;
The positive pole of storage battery is connected with the other end of fuse; 310 ends of power-switching circuit are connected with 910 ends of bearing power drive circuit; 320 ends of power-switching circuit are connected with 610 ends of PWM drive circuit, and 330 ends of power-switching circuit are connected with 450 ends of PSoC central processing unit;
440 ends of PSoC central processing unit are connected with 630 ends of PWM drive circuit, and 620 ends of PWM drive circuit are connected with 530 ends of charge circuit;
1330 ends of load current sample circuit are connected with 460 ends of PSoC central processing unit, and 1320 ends of load current sample circuit are connected with 1110 ends of bearing power output control circuit;
470 ends of PSoC central processing unit are connected with 920 ends of bearing power drive circuit, and 930 ends of bearing power drive circuit are connected with 1120 ends of bearing power output control circuit, and 1130 ends of bearing power output control circuit are connected with the negative pole of output loading.
2. the MPPT type solar charging controller based on PSoC according to claim 1, it is characterized in that: the model of said PSoC central processing unit is CY8CLED03D01.
3. the MPPT type solar charging controller based on PSoC according to claim 1 and 2; It is characterized in that: be provided with lightning protection circuit; One end of said lightning protection circuit is connected with the positive pole of solar cell, and the other end of said lightning protection circuit is connected with the negative pole of solar cell.
4. the MPPT type solar charging controller based on PSoC according to claim 3; It is characterized in that: said lightning protection circuit is set to the transient voltage restraining diode; Said transient voltage restraining diode one end is connected with the positive pole of solar cell, and the other end of said transient voltage restraining diode is connected with the negative pole of solar cell.
5. the MPPT type solar charging controller based on PSoC according to claim 1 and 2; It is characterized in that: be provided with the anti-backflow circuit; One end of said anti-backflow circuit is connected with 520 ends of said charge circuit, and the other end of said anti-backflow circuit is connected with an end, the output loading positive terminal of battery tension sample circuit.
6. the MPPT type solar charging controller based on PSoC according to claim 1 and 2 is characterized in that: be provided with temperature sensor, said temperature sensor is connected with 480 ends of said PSoC central processing unit.
7. the MPPT type solar charging controller based on PSoC according to claim 6, it is characterized in that: said temperature sensor is mounted on said storage battery.
8. the MPPT type solar charging controller based on PSoC according to claim 7, it is characterized in that: the model of said temperature sensor is LM75.
9. the MPPT type solar charging controller based on PSoC according to claim 1 and 2 is characterized in that: be provided with the control push-button array, said control push-button array is connected with 490 ends of said PSoC central processing unit.
10. the MPPT type solar charging controller based on PSoC according to claim 1 and 2 is characterized in that: be provided with the acoustooptic display alarm circuit, said acoustooptic display alarm circuit is connected with 491 ends of said PSoC central processing unit.
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| CN2010106072325A CN102545287A (en) | 2010-12-27 | 2010-12-27 | MPPT(Maximum Power Point Tracking)-type solar charging controller based on PSoC (Programmable System On Chip) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105356578A (en) * | 2015-11-10 | 2016-02-24 | 嘉兴市瑞诚电子科技有限公司 | Photovoltaic power generation modular controller |
| CN110071399A (en) * | 2019-06-04 | 2019-07-30 | 南京信息工程大学 | A kind of intelligent socket with lightning protection function |
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Application publication date: 20120704 |