CN102157966B - Intelligent photovoltaic controller with multiple functions - Google Patents

Intelligent photovoltaic controller with multiple functions Download PDF

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Publication number
CN102157966B
CN102157966B CN2011100897916A CN201110089791A CN102157966B CN 102157966 B CN102157966 B CN 102157966B CN 2011100897916 A CN2011100897916 A CN 2011100897916A CN 201110089791 A CN201110089791 A CN 201110089791A CN 102157966 B CN102157966 B CN 102157966B
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circuit
storage battery
voltage
protection circuit
reverse
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CN102157966A (en
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陆明
陈立
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Jiangxi Ripusheng Energy Technology Co ltd
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JIANGXI SUNY-PS SOLAR PV INDUSTRY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/50Energy storage in industry with an added climate change mitigation effect

Abstract

The invention discloses an intelligent photovoltaic controller with multiple functions, comprising a box and a control circuit board, wherein a reversely-connected protection circuit on the control circuit board is respectively connected with a switch power supply, a storage battery and a solar battery by interfaces; the switch power supply, the storage battery and the solar battery are respectively connected with a charge-discharge and power-supply switching circuit after being subjected to reversely-connected protection; the storage battery and the solar battery are respectively connected with a voltage and current acquisition circuit after being subjected to the reversely-connected protection; the charge-discharge and power-supply switching circuit is connected with a voltage-stabilizing and short-circuit protection circuit; the voltage-stabilizing and short-circuit protection circuit is connected with a soft switch; and an advanced RISC machines (ARM) processor is respectively connected with the voltage and current acquisition circuit, a key display circuit, a photosensor, a temperature sensor, the charge-discharge and power-supply switching circuit, the voltage-stabilizing and short-circuit protection circuit and the soft switch. The intelligent photovoltaic controller is provided with multiple functions and operating modes, so that the generality of the intelligent photovoltaic controller is strengthened, demands from different users are met, the installation is convenient, and the use is reliable.

Description

Intelligent photovoltaic controller with multiple functions
Technical field
The present invention relates to solar photovoltaic controller, especially relate to a kind of solar energy intelligent photovoltaic controller with several functions.
Background technology
Now, the photovoltaic industry development is swift and violent, and new photovoltaic product emerges in an endless stream.The large-sized photovoltaic electricity generation system is arranged, middle-size and small-size photovoltaic application system is also arranged, such as solar energy illuminating device, solar energy traffic warning equipment etc.The photovoltaic application system mainly is comprised of solar module, storage battery, photovoltaic controller and load, and wherein photovoltaic controller is key and the core in the whole system, and its performance directly affects result of use and the useful life of whole system.The most basic function of photovoltaic controller is that storage battery is carried out management of charging and discharging, guarantees that storage battery does not overcharge but puts.Although the Intelligent photovoltaic controller of now extensive use is except having the most basic function, some intelligent control functions have mostly all been increased, such as temperature-compensating, pattern setting etc., but also there is following weak point in existing photovoltaic controller: the one, and existing photovoltaic control device versatility is poor, will use the photovoltaic controller with difference in functionality according to different demands, if any want doubleway output, the two periods controls of wanting that have will be selected different controllers; The 2nd, being connected between existing photovoltaic controller and the solar module need use photovoltaic component terminal box, and inconvenience is installed; The 3rd, existing photovoltaic controller mainly is lead acid accumulator generally for the storage battery of single kind, and does not have the photovoltaic controller for lithium battery.
Summary of the invention
For the problem that solar photovoltaic controller in the above-mentioned prior art exists, the present invention takes respectively following technical scheme to solve.
1, poor for existing photovoltaic controller versatility, different occasions will be used the problem of the photovoltaic controller with difference in functionality, and the present invention comprehensively in controller, can adapt to the needs of different occasions with several functions more, strengthens its versatility.The technical scheme of taking is: described Intelligent photovoltaic controller with multiple functions comprises box body and control circuit board, and described control circuit board comprises reverse-connection protection circuit, discharges and recharges and power switching circuit, voltage stabilizing and short-circuit protection circuit, soft switch, electric current and voltage Acquisition Circuit, button display circuit, light sensor, temperature sensor and arm processor; Be provided with the photovoltaic component terminal box circuit that is constituted by a diode between described solar cell and the control circuit board; described reverse-connection protection circuit by interface respectively with the Switching Power Supply of outside; storage battery links to each other with solar cell; described Switching Power Supply; storage battery and solar cell respectively by behind the reverse connecting protection with discharge and recharge and the power switching circuit links to each other; described storage battery and solar cell are respectively by linking to each other with the electric current and voltage Acquisition Circuit behind the reverse connecting protection; described discharge and recharge and the power switching circuit links to each other with voltage stabilizing and short-circuit protection circuit; described voltage stabilizing and short-circuit protection circuit link to each other with soft switch; described arm processor respectively with the electric current and voltage Acquisition Circuit; the button display circuit; light sensor; temperature sensor; discharge and recharge and the power switching circuit; voltage stabilizing and short-circuit protection circuit link to each other respectively with soft switch; described button display circuit comprises control button and LED display circuit, and described control button comprises the test button; menu key and parameter options button.
Can make photovoltaic controller of the present invention except having basic discharging and recharging the control function by technique scheme; also has simultaneously two-way voltage-stabilizing output; civil power and storage battery power supply automatically switch; short circuit; lightning protection; reversal connection; overload; be full of to put and automatically shut down and the protection of the global function such as recovery; temperature-compensating; two period controls of and lighting time in the evening lighting time in the morning; light-operated time control cooperates control; the parameter power down protection; storage battery is selected, running status and parameter display, the several functions such as test pattern; strengthen the versatility of controller, can satisfy the different needs of multiple occasion.
2, the problem that links to each other and bring with solar cell by independent photovoltaic component terminal box for solving existing photovoltaic controller need, the present invention is designed into the photovoltaic component terminal box circuit that is made of diode in the circuit of photovoltaic controller in the lump, consist of an integrated controller of photovoltaic component terminal box function, and leave interface (binding post) at controller and make it to be connected with solar cell easily, thereby saved the photovoltaic component terminal box of independent use, installed more convenient.
3; for solving an existing photovoltaic controller problem for the single kind storage battery; the present invention takes following technical scheme: by the programming to the arm processor chip; increase the storage battery preference pattern; can select sealed cell by button setting; open cell; colloid battery and lithium battery; and can mate the suitable parameter that discharges and recharges according to different battery types; and specially for lithium battery; increased an equalizing circuit after storage battery is by reverse connecting protection and between the electric current and voltage Acquisition Circuit; thereby realize the equalizing charge to lithium battery, prolong the useful life of lithium battery.
Multifunctional intellectual photovoltaic control device device of the present invention roughly is divided into following four parts:
1, power input part divides: comprise the reverse-connection protection circuit that civil power input, storage battery input, solar cell input are shielded and discharge and recharge and the power switching circuit.Discharge and recharge and the power switching circuit is realized mains-supplied and battery-driven switching, and realize solar cell to the charging control of storage battery, the control of discharge of storage battery, simultaneously, provide power supply to MosFet voltage stabilizing and the short-circuit protection circuit of output.
2, data acquisition display control section: comprise control button, LED display circuit, electric current and voltage collection, temperature acquisition, sensitization collection and equalizing circuit.The control button comprises test button, menu key and parameter options button, the test button can make controller enter test mode, menu key is used for selecting mode of operation, the parameter options button is used for arranging the operational factor of associative mode, can select sealed cell, open cell, colloid battery and lithium battery by button setting, and can mate the suitable parameter that discharges and recharges according to different battery types.The LED display circuit comprises that the state of diode shows and the operational factor of charactron shows.The collection to storage battery and solar array voltage, discharging current, state of temperature, light conditions is finished respectively in voltage acquisition, current acquisition, temperature acquisition, sensitization collection, and with these signals for the arm processor calculation process.The electric current and voltage Acquisition Circuit is subjected to the control of arm processor, thereby whether the control equalizing circuit works.When storage battery is set to be lithium battery, equalizing circuit normal operation, otherwise equalizing circuit do not work, and the battery tension current signal directly enters the electric current and voltage Acquisition Circuit behind reverse connecting protection.
3, arm processor: adopt the ARM of PHILIPS Co. chip LPC2134, this chip is 32 high-end real-time processors, is in core status in whole system.The data analysis that the acquisition module collection comes is processed; make corresponding decision; control discharges and recharges and power switching circuit, electric current and voltage Acquisition Circuit, MosFet voltage stabilizing and short-circuit protection circuit and soft switch, realize to storage battery discharge and recharge control, to the protection control of controller, the break-make of output loading is controlled.
4, output: comprise MosFet voltage stabilizing and short-circuit protection circuit and soft switch.Under the control of arm processor, MosFet voltage stabilizing and short-circuit protection circuit are realized short-circuit protection and voltage stabilizing output, and soft switch is realized independently break-make control of doubleway output.
The operation principle of Intelligent photovoltaic controller with multiple functions of the present invention is:
Controller is take arm processor as core, by microprocessor the parameters such as battery tension, solar array voltage, discharging current, ambient temperature are gathered, calculate by special use control model, selection meets discharge rate and the temperature compensation parameter of battery characteristics, the control of realization high precision, simultaneously, adopt the fuzzy charging modes of PWM of intelligent and high-efficiency that storage battery is charged, guarantee that battery-operated is in optimum state.Controller can arrange operational mode and operational factor easily with the button display circuit, and display circuit also can show current running status intuitively simultaneously.
Binding post on the control circuit board of the present invention is respectively the input interface of storage battery, Switching Power Supply, solar cell, photo resistance and the output interface of two-way load.
Intelligent photovoltaic controller with multiple functions of the present invention aims at solar DC electric power system, solar DC road lamp system, small-sized solar power plant system design, use the ARM chip to realize intelligent control, all chips all adopt industrial rank, can use under rugged environment.System has short circuit, overload and anti-reverse protection, be full of, cross put automatically shut down, the global function safeguard measures such as recovery, detailed charging indication, battery condition, load, civil power and various faulty indication.The present invention samples to parameters such as battery tension, solar array voltage, discharging current, ambient temperatures by computer chip, calculate by special use control model, realization meets the discharge rate of battery characteristics, the high precision control of temperature-compensating correction, and the fuzzy charging modes of the PWM that has adopted intelligent and high-efficiency charges to storage battery, guarantee that battery-operated in optimum state, has prolonged the useful life of storage battery greatly.This controller has multiple-working mode, can satisfy the needs of different user.
Description of drawings
Fig. 1 is multi-functional photovoltaic intelligent controller principle schematic block diagram of the present invention.
Embodiment
Specifically describe below in conjunction with Fig. 1;
Intelligent photovoltaic controller with multiple functions of the present invention comprises box body; be fitted in control circuit board and the interface on the control circuit board (binding post) in the box body; dotted line partly is the schematic block diagram of controller controling circuit plate among Fig. 1; described control circuit board comprises the reverse-connection protection circuit that input power is played the reverse connecting protection effect; described reverse-connection protection circuit is provided with and Switching Power Supply; storage battery; three interface (A that solar cell connects respectively; B; three binding posts of C); described Switching Power Supply links to each other with civil power; described voltage stabilizing and short-circuit protection circuit are MosFet voltage stabilizing and short-circuit protection circuit; the also integrated photovoltaic component terminal box circuit that is constituted by a diode in the interface C circuit between solar cell and the controller; described Switching Power Supply; storage battery and solar cell are through A; B; C interface with after reverse-connection protection circuit links to each other again with discharge and recharge and the power switching circuit links to each other, storage battery and solar cell are through B; C interface with link to each other with the electric current and voltage Acquisition Circuit again after reverse-connection protection circuit links to each other.Keep storage battery and solar cell through B, C interface and after reverse-connection protection circuit links to each other again with when the electric current and voltage Acquisition Circuit links to each other; in order to realize better the equalizing charge to lithium battery; prolong the useful life of lithium battery; the present invention has also increased the equalizing circuit that an end links to each other with reverse-connection protection circuit, the other end links to each other with the electric current and voltage Acquisition Circuit between reverse-connection protection circuit and electric current and voltage Acquisition Circuit, thereby battery tension signal, discharging current and solar array voltage signal better can be introduced the electric current and voltage Acquisition Circuit.Described discharge and recharge and the power switching circuit links to each other with MosFet voltage stabilizing and short-circuit protection circuit; power supply signal is introduced MosFet voltage stabilizing and short-circuit protection circuit; described MosFet voltage stabilizing and short-circuit protection circuit link to each other with soft switch; described arm processor respectively with the electric current and voltage Acquisition Circuit; the button display circuit; light sensor; temperature sensor; discharge and recharge and the power switching circuit; MosFet voltage stabilizing and short-circuit protection circuit; soft switch links to each other; receive and process voltage; electric current; temperature; illuminance; temperature; the key-press input signal; finish simultaneously display circuit; the electric current and voltage Acquisition Circuit; discharge and recharge and the power switching circuit; the control of MosFet voltage stabilizing and short-circuit protection circuit and soft switch; described button display circuit comprises the control button; the LED display circuit; the control button comprises the test button; menu key and parameter options button; the test button can make controller enter test mode; menu key is used for selecting mode of operation; the parameter options button is used for arranging the operational factor of associative mode; the LED display circuit comprises that the state of five light-emitting diodes shows and the operational factor of two charactrons shows; five LED light-emitting diodes are used for showing solar cell; storage battery; civil power; load 1; the operating state of load 2; two charactrons are carrying out parameter display mode and change parameter under the pattern respectively when arranging, and are not carrying out parameter displays temperature when arranging.
Described arm processor chip is LPC2134, by arm processor the parameters such as battery tension, solar array voltage, discharging current and ambient temperature are gathered, calculate by special use control model, selection meets discharge rate and the temperature compensation parameter of battery characteristics, realizes high precision control.Simultaneously, adopt the fuzzy charging modes of PWM that storage battery is charged, keep battery-operated in optimum state.By button and display circuit, operational mode and operational factor can be set easily, and can observe directly current various running statuses.
The below illustrates respectively how various functions realize:
1, parameter is browsed, parameter is regulated and power down keeps function: the double figures code pipe on the controller panel, and the first bit display mode, second show the parameter under this pattern; During normal operation, press the menu setecting button on the controller panel, system pattern and control parameter can show, whenever click the menu setecting button, mode value will conversion once, also can show simultaneously the corresponding parameter under this pattern, at this moment, press the parameter selection key and then the operational factor that changes under the pattern can be set; The significant datas such as the operational mode of system and parameter all are kept at chip internal, do not lose after the power down, make adjusting convenient, and system works is more reliable.
2, LED shows: the LED display circuit comprises that the state of five light-emitting diodes shows and the operational factor of two charactrons shows, five LED light-emitting diodes are used for showing the operating state of solar cell, storage battery, civil power, load 1, load 2, two charactrons are carrying out parameter display mode and change parameter under the pattern respectively when arranging, and are not carrying out parameter displays temperature when arranging.
Civil power and storage battery power supply automatic switching function:
3, when solar cell can not normally power to the load; civil power is by discharging and recharging and power switching circuit, voltage stabilizing and short-circuit protection circuit and soft switch on the controller; can be automatically independent powering load but not civil power directly is added to the access way above the storage battery; can reduce the damage that civil power causes storage battery and mains supply; can effectively reduce the mains supply power configuration; whole handoff procedure is realized soft handover, can not impact load and storage battery, and loaded work piece is unaffected.When occurring putting, storage battery is promoted charging, carry out single compensation and safeguard; When the load of solar cell normal power supply is normally used, use the charging modes of directly charging and floating charge combination, will be loaded on the storage battery every 7 days civil powers, storage battery is once promoted charging, prevent storage battery vulcanization, greatly prolonged the useful life of storage battery; Has simultaneously high precision temperature compensation; When storage battery cross put after being connected of automatic cut-out and load.
4, two-way voltage-stabilizing output function: the present invention provides independently voltage stabilizing output of two-way by MosFet voltage stabilizing and short-circuit protection circuit, can independently control each road output.
5, two period functions: the present invention also can be to having increased two period control functions of two-way load when carrying out the software program design, two period controls refer to that of two-way load and all can arrange the lighting time in the evening lighting time in the morning, after being set to two period functions, load bright light in evening was closed after a period of time, bright light again before day, close again when waiting until daytime, and lighting time is adjustable.
6, the selection function of storage battery: increased the storage battery option program when the controller software programming in order to realize this function, the present invention supports sealed cell, open cell, colloid battery, the use of the storage batterys such as lithium battery, before the use, need to select correct battery types, enter the battery types preference pattern by pressing the menu key that is arranged on the control circuit board, select battery types by pressing the parameter options button that is arranged on the control circuit board again, set complete rear wait 30 seconds, parameter will be preserved automatically, and controller will be according to the accumulator parameter of setting the automatically parameter of the coupling of selection operation under the effect of arm processor program when operation.When the storage battery of setting is that lithium battery is, arm processor can send control signal makes equalizing circuit effective, makes the Capacitance reserve of each battery core of lithium battery balanced, prolongs the useful life of lithium battery.
7, light-operated time control cooperates control: the present invention can realize pure light-operatedly by monitoring light-operated point, can realize that also light-operated and two periods regularly cooperate control.
8, light-operated some adjustment: light-operated point refers to the magnitude of voltage of solar panel during bright light in evening, the user can adjust light-operated cut-in voltage according to actual environment, such as evening solar panel have other light to disturb and when not opening lamp, this value of adjustable height, the filtering light disturbance, but lighting time may shift to an earlier date.
9, light-operated judgement time is adjusted: the light-operated judgement time refers to the time that need to judge when cell plate voltage reaches at light-operated, and the time, longer filter effect was better, turned this value down and can reach the purpose of turning on light in advance, but easily be subjected to extraneous light disturbance.
10, the delay time adjustment of turning on light: the turn on light certain hour that refers to delay time evening of time-delay is turned on light again, regulates this time, can reach and postpone the purpose of turning on light.
11, test function: during daytime, press the test button on the controller, can directly open load, again close load by next, after opening not again button close load, then autoshutdown after 1 minute makes things convenient for the site operation test to use.
12, temperature-compensating: by the temperature sensor on the controller, controller can be regulated charging voltage automatically according to ambient temperature, to reach the optimal charge effect.
13, self-protection function: have overcharge, cross put, overload protection and unique electronics short-circuit protection and anti-reverse protection, all protections all do not damage any parts, do not burn insurance; Have the TVS lightning protection, without the wire jumper design, can improve reliability, the durability of system.
Following form is that applicable voltage is system's basic electric parameter of the controller of 24V
Figure 2011100897916100002DEST_PATH_IMAGE001
Pattern and parameter arrange table
Figure DEST_PATH_IMAGE003
Timing is the longest can to arrange 14 hours, as will realizing two period functions, the bright time of PLSCONFM and morning lighting time in the evening it
Be no more than the All Through The Night time
Light-operated point voltage is adjustable: 4V~10 V, the acquiescence of dispatching from the factory 5V/12; 10V/24V
Charactron shows 4 5 6 7 8 9 0
Light-operated point voltage V 4 5 6 7 8 9 10
Light-operated judgement timetable, the time, longer filter effect was better, and is anti-interference stronger, the acquiescence of dispatching from the factory 10 minutes
Charactron shows 1 2 3 4 5 6 7 8 9 0
Light-operated judgement time min 1 2 3 4 5 6 7 8 9 10
Accumulator parameter: the X2 of 24V system
Figure DEST_PATH_IMAGE007
Wherein the lithium battery parameter is only for reference, can make amendment according to the actual used battery parameter of user
The LED show state
Figure DEST_PATH_IMAGE009

Claims (2)

1. Intelligent photovoltaic controller with multiple functions, it comprises box body and control circuit board, and described control circuit board comprises reverse-connection protection circuit, discharges and recharges and power switching circuit, voltage stabilizing and short-circuit protection circuit, soft switch, electric current and voltage Acquisition Circuit, button display circuit, light sensor, temperature sensor and arm processor; It is characterized in that: described reverse-connection protection circuit passes through A; B; C interface respectively with the Switching Power Supply of outside; storage battery links to each other with solar cell; be provided with the photovoltaic component terminal box circuit that is constituted by a diode in the interface C circuit between described solar cell and the control circuit board; described Switching Power Supply; storage battery and solar cell respectively by behind the reverse-connection protection circuit with discharge and recharge and the power switching circuit links to each other; described storage battery and solar cell are respectively by linking to each other with the electric current and voltage Acquisition Circuit behind the reverse-connection protection circuit; described discharge and recharge and the power switching circuit links to each other with voltage stabilizing and short-circuit protection circuit; described voltage stabilizing and short-circuit protection circuit link to each other with soft switch; described arm processor respectively with the electric current and voltage Acquisition Circuit; the button display circuit; light sensor; temperature sensor; discharge and recharge and the power switching circuit; voltage stabilizing and short-circuit protection circuit link to each other respectively with soft switch; described button display circuit comprises control button and LED display circuit, and described control button comprises the test button; menu key and parameter options button.
2. Intelligent photovoltaic controller with multiple functions according to claim 1; it is characterized in that: keep storage battery and solar cell through B, C interface and after reverse-connection protection circuit links to each other again with when the electric current and voltage Acquisition Circuit links to each other, between reverse-connection protection circuit and electric current and voltage Acquisition Circuit, increased the equalizing circuit that an end links to each other with reverse-connection protection circuit, the other end links to each other with the electric current and voltage Acquisition Circuit.
CN2011100897916A 2011-04-12 2011-04-12 Intelligent photovoltaic controller with multiple functions Expired - Fee Related CN102157966B (en)

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