CN104470146B - A kind of self adaptation long-life sampling solar street lamp controller - Google Patents
A kind of self adaptation long-life sampling solar street lamp controller Download PDFInfo
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Abstract
The invention discloses a kind of sampling of self adaptation long-life solar street lamp controller, solar cell module, long-time cycle energy-storage battery, Large Copacity energy-storage battery, single-chip microcomputer, charge switch array and discharge switch array, solar charging circuit, battery, single-chip microcomputer, sample circuit, solar cell module electric energy output end connects solar charging circuit electrical energy inputs, the solar charging circuit electric energy output end connects battery incoming end, the solar charging circuit electric power signal output end connects sampling circuit samples signal input part, the sampling circuit samples signal output part connects single-chip microcomputer sampled signal input, the battery electric energy signal output part connects sampling circuit samples signal input part, the service life of sun street lamp can be significantly improved.The sun road lamp system life-span is doubled the above, and also there is low cost, Gao Kexing, the features such as simple, with very high practical value.
Description
Technical field
The present invention relates to solar control field, more particularly to a kind of sampling of self adaptation long-life solar street light control
Device.
Background technology
Solar street light using solar-energy photo-voltaic cell provide electric energy, solar energy as a kind of new energy of environmental protection,
" inexhaustible, with it not to the utmost ".Solar energy resources is made full use of, has positive effect to alleviating the nervous situation of conventional energy resource.Too
Positive energy streetlight is that have using solar energy as electric energy supply for providing night-road illumination：Simple installation, exempt from ditching canal, exempt from paving
Cable, it is stable and reliable in work, the features such as.The installation of solar street light is simply, conveniently, electric without doing laying as common street lamp
A large amount of foundation engineerings such as cable, solar street light quickly grows in recent years, every year with 30% speed increase, photoed badly in day
Area, such as south China and southwest it is sloppy area because sunshine time it is few, intensity of illumination is low, it is considered to be not suitable for application ground
Area.Solar Street Lighting System in current market has problems with.
Existing system using directly being charged to battery, is not controlled typically to solar energy conversion links,
Because the output state of array is limited by cell operating status, power output is not often in the maximum power point of array, sternly
Generating efficiency is have impact on again.
Shorter typically only 1-2 of existing solar street light life-span, wherein the mainly short life of battery, is used
Lead-acid battery battery can only use 1-2, cycle charge-discharge number of times 300-500 times.In whole street lamp cost battery into
Originally more than the 30% of whole system is accounted for, if the long ferric phosphate reason battery of service life, cost will double the above.
In actual use because the higher application of price is fewer.
The output of present Solar Street Lighting System, it is general to be exported using straight-through (switch) mode, and solar control is defeated
After going out, need to also increase driving power supply in LED lamp will necessarily increase power consumption, cause difficulty to light fixture adaptation, it is impossible to monitor lamp
The working condition of tool, it is impossible to control bearing power.When particularly being applied in low Rizhao Area, long-term lamp can be caused not work, electric power storage
Pond power shortage is damaged.The problems such as short life.
The content of the invention
It is contemplated that at least solving technical problem present in prior art, a kind of self adaptation is especially innovatively proposed
Long-life sampling solar street lamp controller.
In order to realize the above-mentioned purpose of the present invention, the invention provides a kind of sampling solar street light control of self adaptation long-life
Device processed, it is it is critical that solar cell module, long-time cycle energy-storage battery, Large Copacity energy-storage battery, single-chip microcomputer, charging
Switch arrays and discharge switch array, solar charging circuit, battery, single-chip microcomputer, sample circuit,
Solar cell module electric energy output end connects solar charging circuit electrical energy inputs, the solar recharging electricity
Road electric energy output end connection battery incoming end, the solar charging circuit electric power signal output end connects sampling circuit samples
Signal input part, the sampling circuit samples signal output part connects single-chip microcomputer sampled signal input, the battery electric energy
Signal output part connects sampling circuit samples signal input part, and the sampling circuit samples signal output part connection of connection battery is single
Piece machine sampled signal input, the sampling feedback circuit signal input part connects single-chip microcomputer sampled feedback signal input, institute
The work of Single-chip Controlling charge switch array is stated, it is long-time cycle energy-storage battery, Large Copacity energy storage to make solar cell module
One of battery charge, Single-chip Controlling discharge switch array work, make long-time cycle energy-storage battery, Large Copacity energy-storage battery it
One electric discharge, is that light fixture is powered.
Above-mentioned technical proposal has the beneficial effect that：The technical bottlenecks such as the adaptation of system voltage electric current need not be considered, in the sun
Energy circuit lamp controller only needs to set the power of solar street light light fixture in, and solar street lamp controller can just be fitted automatically
Answer the voltage of road lamp, the running parameter such as electric current, this solar street lamp controller can realize that DC0V-300V Width funtions are exported.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the solar charging circuit includes：
First electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th
Transistor, the second triode, the first diode, the second diode,
First electric capacity one end connects solar cell module positive pole, and the solar cell module negative pole connects the first electric capacity
The other end, first electric capacity one end is also connected with the first diode cathode, and first diode cathode connects first resistor one respectively
End and the 5th transistor source, the 5th transistor gate connect the first resistor other end, and the 5th transistor drain connects
Second electric capacity one end is connect, the second electric capacity other end ground connection, the first resistor other end is also connected with the second triode current collection
Pole, described second transistor base connection second resistance one end, the second resistance other end connects single-chip microcomputer charge information pipe
End is managed, the second transistor emitter connection ground, the first capacitance cathode connection whole machine of solar components, the first electric capacity negative pole connects
Ground, second capacitance cathode is also connected with battery positive voltage, the second electric capacity negative pole ground connection, the connection electric power storage of the 4th resistance one end
Pond positive pole, the 4th resistance other end connects the 3rd capacitance cathode, and the 3rd electric capacity negative pole ground connection, the 3rd electric capacity negative pole connects
3rd resistor one end is connect, the 3rd resistor other end connects battery terminal negative, and it is steady that the 3rd capacitance cathode is also connected with the 9th
Pressure pipe negative pole, the 9th voltage-stabiliser tube positive pole is also grounded, and the 9th voltage-stabiliser tube negative pole is also connected with mu balanced circuit input, described
Circuit output end of pressure-stabilizing connects the 4th electric capacity one end, the 4th electric capacity other end ground connection.
Above-mentioned technical proposal has the beneficial effect that：Pass through the design of charging circuit, it is ensured that charging safety and stability, charging stream
Freely, circuit design is reasonable.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the sample circuit includes：Voltage is adopted
Sample circuit and current sampling circuit,
The voltage sampling circuit signal input part connects solar charging circuit voltage signal output end, and the voltage is adopted
Sample circuit signal output end connects single-chip microcomputer voltage signal inputs；The current sampling circuit signal input part connects solar energy
Charging circuit current signal output end, the current sampling circuit signal output part connects single-chip microcomputer current signal input.
Above-mentioned technical proposal has the beneficial effect that：Sampling processing work is carried out by voltage sampling circuit and current sampling circuit
Make, so as to obtain the operational data of voltage and current in real time.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the voltage sampling circuit includes：The
Five resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance,
Two diodes, the 3rd diode, voltage comparator,
5th resistance one end connects battery, and the 5th resistance other end connects voltage comparator power input, institute
The 6th resistance one end ground connection is stated, the 6th resistance other end connects voltage comparator inverting input and the 9th resistance one respectively
End, the 9th resistance other end connects the tenth resistance one end and voltage comparator positive input, the 11st electricity respectively
Other end connection voltage comparator voltage signal inputs are hindered, the tenth resistance other end connects single-chip microcomputer signal input respectively
End and the second diode cathode, the second diode cathode ground connection, affiliated 6th resistance one end are also connected with the 7th resistance one end,
The 7th resistance other end connects voltage comparator output end and the 8th resistance one end respectively, and the 8th resistance other end connects
Connect the 12nd resistance other end described in the 12nd resistance one end and connect single-chip microcomputer signal input, the 12nd resistance other end
Connect the 3rd diode cathode, the 3rd diode cathode ground connection.
Above-mentioned technical proposal has the beneficial effect that：The voltage sampling circuit circuit layout is reasonable, stable and reliable operation.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the current sampling circuit includes：The
13 resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 5th electric capacity, the 6th electric capacity, the 4th diode, the five or two
Pole pipe,
Solar cell module current signal end connects the 13rd resistance one end, and the 13rd resistance other end connects respectively
The 14th resistance one end and the 5th electric capacity one end are connect, described 5th electric capacity one end is also connected with the 4th diode cathode and monolithic is electromechanical
Signal input part is flowed, the 5th electric capacity other end connects the 14th resistance other end and the 4th diode cathode, the described 4th
Diode cathode is also connected with the 5th diode cathode, and the 5th diode cathode connects single-chip microcomputer signal input, and described the
Five diode cathodes are also respectively connected with the 6th electric capacity one end and the 16th resistance one end, and the 6th electric capacity other end is connected respectively
5th diode cathode and the 16th resistance other end, described 16th resistance one end are also connected with the 15th resistance one end.
Above-mentioned technical proposal has the beneficial effect that：The current sampling circuit circuit layout is reasonable, stable and reliable operation.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the charge switch array includes the
One transistor and third transistor,
Discharge switch array includes transistor seconds and the 4th transistor, and the first charging signals output end of single-chip microcomputer is connected
First crystal tube grid, the second charging signals output end connection third transistor grid of single-chip microcomputer, the first electric discharge of single-chip microcomputer
Signal output part connects transistor seconds grid, and the second discharge signal output end of single-chip microcomputer connects the 4th transistor gate；
The first transistor source electrode connects transistor seconds drain electrode and Large Copacity energy-storage battery positive pole, second crystal respectively
Pipe drain electrode connection super capacitor one end, the super capacitor other end connects solar panel negative pole；
The third transistor drain electrode connection long-time cycle energy-storage battery positive pole, the third transistor source electrode is also connected with
4th transistor drain, described 4th transistor drain connection super capacitor one end.
Above-mentioned technical proposal has the beneficial effect that：Charge switch array and discharge switch array can be effectively to batteries
It is electrically operated that electric energy carries out charge and discharge.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the long-time cycle energy-storage battery
Replaced using super capacitor,
Described super capacitor one end is also connected with road lamp positive pole, and the super capacitor other end connection road lamp is born
Pole, the long-time cycle energy-storage battery negative pole connects solar cell module negative pole, and the Large Copacity energy-storage battery negative pole connects
Connect solar cell module negative pole.
Above-mentioned technical proposal has the beneficial effect that：The super capacitor can carry out electric energy savings, and effectively discharge.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
The technical bottlenecks such as the adaptation of system voltage electric current need not be considered, only need to set in solar street lamp controller
Determine the power of solar street light light fixture, solar street lamp controller can just adapt to the voltage of road lamp automatically, the work such as electric current
Make parameter, this solar street lamp controller can realize that DC0V-300V Width funtions are exported.
The service life of sun street lamp can be significantly improved.The sun road lamp system life-span is doubled on one, it is most long can
Reach 15 years.And also there is low cost, Gao Kexing, the features such as simple, with very high practical value.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is self adaptation long-life sampling solar street lamp controller circuit diagram of the present invention；
Fig. 2 is self adaptation long-life sampling solar street lamp controller voltage-regulating circuit schematic diagram of the present invention；
Fig. 3-5 is fundamental diagram.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention and simplifies description, rather than indicate or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the limit of the present invention
System.
In the description of the invention, unless otherwise prescribed with limit, it is necessary to explanation, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection or the connection of two element internals, can
To be to be joined directly together, it can also be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
As shown in figure 1, the invention provides a kind of sampling of self adaptation long-life solar street lamp controller, its key exists
In solar cell module, long-time cycle energy-storage battery, Large Copacity energy-storage battery, single-chip microcomputer, charge switch array and electric discharge
Switch arrays, solar charging circuit, battery, single-chip microcomputer, sample circuit,
Solar cell module electric energy output end connects solar charging circuit electrical energy inputs, the solar recharging electricity
Road electric energy output end connection battery incoming end, the solar charging circuit electric power signal output end connects sampling circuit samples
Signal input part, the sampling circuit samples signal output part connects single-chip microcomputer sampled signal input, the battery electric energy
Signal output part connects sampling circuit samples signal input part, and the sampling circuit samples signal output part connection of connection battery is single
Piece machine sampled signal input, the single-chip microcomputer voltage adjustment signal output end connects voltage-regulating circuit signal input part, institute
Voltage-regulating circuit signal output part connection light fixture is stated, the sampling feedback circuit signal input part connects single-chip microcomputer sampling feedback
Signal input part, the Single-chip Controlling charge switch array work, it is long-time cycle energy storage electricity to make solar cell module
One of pond, Large Copacity energy-storage battery are charged, the work of Single-chip Controlling discharge switch array, make long-time cycle energy-storage battery, big
One of capacity energy-storage battery discharges, and is that light fixture is powered.
Above-mentioned technical proposal has the beneficial effect that：The technical bottlenecks such as the adaptation of system voltage electric current need not be considered, in the sun
Energy circuit lamp controller only needs to set the power of solar street light light fixture in, and solar street lamp controller can just be fitted automatically
Answer the voltage of road lamp, the running parameter such as electric current, this solar street lamp controller can realize that DC0V-300V Width funtions are exported.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the solar charging circuit includes：
First electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th
Transistor, the second triode, the first diode, the second diode,
First electric capacity one end connects solar cell module positive pole, and the solar cell module negative pole connects the first electric capacity
The other end, first electric capacity one end is also connected with the first diode cathode, and first diode cathode connects first resistor one respectively
End and the 5th transistor source, the 5th transistor gate connect the first resistor other end, and the 5th transistor drain connects
Second electric capacity one end is connect, the second electric capacity other end ground connection, the first resistor other end is also connected with the second triode current collection
Pole, described second triode base stage connection second resistance one end, the second resistance other end connects single-chip microcomputer charge information pipe
Manage end, the second FET emitter stage connection ground, the first capacitance cathode connection whole machine of solar components, the first electric capacity negative pole
Ground connection, second capacitance cathode is also connected with battery positive voltage, and the second electric capacity negative pole ground connection, the 4th resistance one end connection stores
Anode, the 4th resistance other end connects the 3rd capacitance cathode, the 3rd electric capacity negative pole ground connection, the 3rd electric capacity negative pole
3rd resistor one end is connected, the 3rd resistor other end connects battery terminal negative, and the 3rd capacitance cathode is also connected with the 9th
Voltage-stabiliser tube positive pole, the 9th diode cathode ground connection, the 9th voltage-stabiliser tube positive pole is also connected with mu balanced circuit input, described
Circuit output end of pressure-stabilizing connects the 4th electric capacity one end, the 4th electric capacity other end ground connection.
Above-mentioned technical proposal has the beneficial effect that：Pass through the design of charging circuit, it is ensured that charging safety and stability, charging stream
Freely, circuit design is reasonable.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the sample circuit includes：Voltage is adopted
Sample circuit and current sampling circuit,
The voltage sampling circuit signal input part connects solar charging circuit voltage signal output end, and the voltage is adopted
Sample circuit signal output end connects single-chip microcomputer voltage signal inputs；The current sampling circuit signal input part connects solar energy
Charging circuit current signal output end, the current sampling circuit signal output part connects single-chip microcomputer current signal input.
Above-mentioned technical proposal has the beneficial effect that：Sampling processing work is carried out by voltage sampling circuit and current sampling circuit
Make, so as to obtain the operational data of voltage and current in real time.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the voltage sampling circuit includes：The
Five resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance,
Two diodes, the 3rd diode, voltage comparator,
5th resistance one end connects battery, and the 5th resistance other end connects voltage comparator power input, institute
The 6th resistance one end ground connection is stated, the 6th resistance other end connects voltage comparator inverting input and the 9th resistance one respectively
End, the 9th resistance other end connects the tenth resistance one end and voltage comparator positive input, the 11st electricity respectively
One end connection voltage-regulating circuit is hindered, the 11st resistance other end connects voltage comparator voltage signal inputs, described
The tenth resistance other end connects single-chip microcomputer signal input and the second diode cathode respectively, and second diode cathode connects
Ground, affiliated 6th resistance one end is also connected with the 7th resistance one end, and it is defeated that the 7th resistance other end connects voltage comparator respectively
Go out end and the 8th resistance one end, the 8th resistance other end connects the 12nd resistance other end described in the 12nd resistance one end and connected
Single-chip microcomputer signal input part is connect, the 12nd resistance other end connects the 3rd diode cathode, the 3rd diode cathode
Ground connection.
Above-mentioned technical proposal has the beneficial effect that：The voltage sampling circuit circuit layout is reasonable, stable and reliable operation.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the current sampling circuit includes：The
13 resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 5th electric capacity, the 6th electric capacity, the 4th diode, the five or two
Pole pipe,
Solar cell module current signal end connects the 13rd resistance one end, and the 13rd resistance other end connects respectively
The 14th resistance one end and the 5th electric capacity one end are connect, described 5th electric capacity one end is also connected with the 4th diode cathode and monolithic is electromechanical
Signal input part is flowed, the 5th electric capacity other end connects the 14th resistance other end and the 4th diode cathode, the described 4th
Diode cathode is also connected with the 5th diode cathode, and the 5th diode cathode connects single-chip microcomputer signal input, and described the
Five diode cathodes are also respectively connected with the 6th electric capacity one end and the 16th resistance one end, and the 6th electric capacity other end is connected respectively
5th diode cathode and the 16th resistance other end, described 16th resistance one end are also connected with the 15th resistance one end, described
The 15th resistance other end connects voltage-regulating circuit.
Above-mentioned technical proposal has the beneficial effect that：The current sampling circuit circuit layout is reasonable, stable and reliable operation.
As shown in Fig. 2 the voltage-regulating circuit includes：17th resistance, the 18th resistance, the 19th resistance, second
Ten resistance, the 21st resistance, the 22nd resistance, the 23rd resistance, the 24th resistance, the 25th resistance, the 6th
Diode, the 7th diode, the 8th diode, the first inductance, third transistor, the 4th transistor, the 5th triode, the six or three
Pole pipe,
Single-chip microcomputer voltage step-down adjustment end connects the 8th diode cathode and the 17th resistance one end, the 17th resistance
The other end connects the 6th transistor base, and the 8th diode cathode connects the 6th transistor collector, the six or three pole
Pipe emitter stage connects the 23rd resistance one end and third transistor grid, the third transistor drain electrode connection accumulator positive
Pole, the third transistor source electrode connects the 4th transistor source and first inductance one end, and described first inductance one end is also connected with
6th diode cathode, the 6th diode cathode connects sample circuit, and it is brilliant that the 6th diode cathode is also connected with the 4th
Body pipe drains, and the 4th transistor drain is also connected with the 21st resistance one end, the 21st resistance other end difference
The 5th transistor collector of ground connection and connection, the 5th transistor emitter connects the 20th resistance one end and the 20th respectively
Two resistance one end, described 22nd resistance one end is also connected with the 4th transistor gate, and the 22nd resistance other end connects
Connect the 21st resistance one end, the 20th resistance other end connects power supply, the 5th transistor base connection the
19 resistance one end, the 19th resistance other end connects the 18th resistance one end and single-chip microcomputer boost in voltage adjustment end, institute
State the first inductance other end and connect the 7th diode cathode, the 7th diode cathode connects the 7th electric capacity one end, described the
The seven electric capacity other ends connect the 6th diode cathode, and the 7th electric capacity other end is also connected with the 25th resistance one end, described
The 25th resistance other end connects the direct output end of single-chip microcomputer voltage and the 24th resistance one end, the 24th resistance respectively
The other end connects LED positive pole and the 7th diode cathode, and LED negative pole connects the 25th resistance one end.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the charge switch array includes the
One transistor and third transistor,
Discharge switch array includes transistor seconds and the 4th transistor, and the first charging signals output end of single-chip microcomputer is connected
First crystal tube grid, the second charging signals output end connection third transistor grid of single-chip microcomputer, the first electric discharge of single-chip microcomputer
Signal output part connects transistor seconds grid, and the second discharge signal output end of single-chip microcomputer connects the 4th transistor gate；
5th transistor source connects transistor seconds drain electrode and Large Copacity energy-storage battery positive pole, described second respectively
Transistor drain connection super capacitor one end, the super capacitor other end connects solar panel negative pole；
The third transistor drain electrode connection long-time cycle energy-storage battery positive pole, the third transistor source electrode is also connected with
4th transistor drain, described 4th transistor drain connection super capacitor one end.
Above-mentioned technical proposal has the beneficial effect that：Charge switch array and discharge switch array can be effectively to batteries
It is electrically operated that electric energy carries out charge and discharge.
Described self adaptation long-life sampling solar street lamp controller, it is preferred that the long-time cycle energy-storage battery
Replaced using super capacitor,
Described super capacitor one end is also connected with road lamp positive pole, and the super capacitor other end connection road lamp is born
Pole, the long-time cycle energy-storage battery negative pole connects solar cell module negative pole, and the Large Copacity energy-storage battery negative pole connects
Connect solar cell module negative pole.
Above-mentioned technical proposal has the beneficial effect that：The super capacitor can carry out electric energy savings, and effectively discharge.
System uses Buck DC/DC electric pressure converters to realize that maximum current is tracked, and electronic switch is used as using FET
Device；Using PWM control modes, working frequency is 20-100kHz.In a cycle of scene effect pipe switch, the electricity of inductance
Stream is continuous, then the step-down ratio of Buck DC/DC converters is equal to the dutycycle of pwm control signal.So MPPT control plan
Slightly it is to adjust the step-down ratio of Buck DC/DC converters by adjusting PWM dutycycle D, to reach adjustment generating equipment work
Voltage is the purpose of maximum power point (MPP) voltage.Solar energy most efficiently charges, and but protects low using solar energy to greatest extent
Rizhao Area sun applications.
Powered using two kinds of batteries, give full play to the charge-discharge characteristic of two kinds of batteries, use the phosphoric acid of the small long lifespan of capacity
Iron manages battery or super capacitor with 500,000 discharge and recharges as a battery, and a battery is responsible for daily discharge and recharge and guarantor
Demonstrate,prove the power consumption of street lamp a whole night.C-size battery uses the comparatively cheap lead-acid battery of the larger price of capacity as electric energy warehouse.
C-size battery is responsible for the unnecessary electricity of storage and the standby electricity in bad weather, gives full play to the spy of two kinds of different batteries
Property, more than one times of the service life of extension solar street light.
Realize that Width funtion is defeated using the composition output circuit of the combination of Boost boost types and Buckt buck change-over circuits
Go out self adaptation fixtures parameters.
When photovoltaic system works, due to the difference of seasonal temperature and intensity of sunshine, each season sun resource is different
, electric flux produced by daily solar panel is how many also different, in order to be able to sufficiently making good use of these electric energy, it is necessary to
Different discharge and recharge strategies.The present invention judges that system is in that season using the electric energy data for collecting daily charging, with
Different discharge and recharge strategies are carried out according to the difference in season.Reach the dynamic equilibrium of energy.The season different to adapt to different environment
Node solar application.Realize the annual 365 days normal bright lights of solar street light.
(1), the maximum power point-tracing control method of solar cell, as shown in figure 3,
Typically require that solar cell Maximum Power Output all the time, i.e. system will can track solar cell in photovoltaic system defeated
The maximum power point gone out.Upper figure is the characteristics of output power P2V curves of solar cell array.As seen from the figure, when solar cell work
When making voltage less than maximum power point voltage Umax, power output rises and increased with solar cell terminal voltage V；Operating voltage is big
When maximum power point voltage Umax, power output rises and reduced with V.Realize MPPT maximum power point tracking be substantially one from
Searching process, i.e., by controlling solar cell terminal voltage V, enable battery intelligent under a variety of sunshines and temperature environment
Ground Maximum Power Output, constantly obtains maximum power output, and this just completes the maximal power tracing of solar cell.
Linear circuit principle such as Fig. 4.In figure load on power be:PRo=I2Ro=(ViRi+Ro)/2 × Ro, such as Fig. 4
It is shown,
By formula (1) to Ro derivations, because Vi, Ri are constants, it can obtain:DPRo*dRo=V2i (Ri-Ro)/(Ri+
Ro) as Ro=Ri, PRo has maximum.For linear circuit, when load resistance is equal to the internal resistance of source, power supply has most
High-power output.Although solar cell and DC to DC translation circuits are all strong nonlinearities, within the extremely short time, it is believed that
It is linear circuit.Therefore, as long as the equivalent resistance of regulation DC to DC change-over circuits makes it be consistently equal to the internal resistance of solar cell, just
The maximum power output of solar cell can be achieved, the MPPT maximum power point tracking of solar cell is also achieved that.Can from Fig. 2
Go out, as Ro=Ri, the voltage at Ro two ends is Vi2, if this shows that the voltage at Ro two ends is equal to Vi2, Po also maximums.
The MPPT maximum power point tracking of solar cell is realized by adjusting the voltage at load two ends.But it is due in sun energy circuit
Load is battery in lamp system, and the voltage that adjust load two ends is not accomplished, passes through a DC in our design
The electric current of load end is adjusted to DC converters to realize maximal power tracing.Learnt with root P=VI work(formulas, it is constant in voltage
In the case of, electric current increase, power can also increase and linear.As long as ensureing to maintain electricity in different situations in systems
Stream is maximum, it is ensured that solar panels are operated on maximum power point.
We in the design access DC to DC converters the input circuit of solar cell, and by DC to DC converters
Input, output voltage and current measurement result adjust DC to DC by the analytic operation of single-chip microcomputer by single-chip microcomputer output pwm pulse
The change equivalence of converter inside switching tube dutycycle changes its load, controls the output current of solar cell to realize most
High-power point tracking.Realized as a result of step-down/up type (Buck2Boost) DC to DC change-over circuits maximum power point with
Track, circuit is simple in this way for institute, software and hardware combining, control method flexibly, the change of environment can be followed, illumination is too exactly
The maximum power point of positive electricity pond output, while causing the vibration of output electric energy during tracking and fluctuating minimum.
(2), depositing for double cell can device
Solar street light is charged this mode of operation of evening electric discharge daytime due to its job specification, as long as the sun in theory
Can the daily generated energy of cell panel enough a whole nights power consumption, the operation that system just can be eternal, but due to season and weather
Factor, inequality is put in the source distribution of solar energy fund in 1 year.Due to cost and security consideration solar panel can not it is usable very
Greatly, to ensure in winter or long-term overcast and rainy can normally use.The ratio that battery is typically configured is larger.Conventional energy storage device is general
Using a lead-acid battery or lithium battery as energy accumulating device, it is cheap to have adopted lead-acid battery, but the life-span is very short, as
1-2, cycle charge-discharge number of times 300-500 times can only be used using lead-acid battery battery.It can such as be improved using lithium battery
Life-span, but fancy price often allows people to hang back.This patent is powered using two pieces of batteries, and a battery capacity is small to be responsible for every
It discharge and recharge and the power consumption for ensureing street lamp a whole night.C-size battery capacity wonderful works electric energy warehouse.It is only inadequate in No. 1 battery
Used time, just using the electricity of No. 2 batteries, the characteristic of two kinds of different batteries is given full play to, extends the service life of solar street light
More than one times.
(3), according to the illumination condition in season, charge-discharge parameter is neatly changed
Using bearing power control realization in low Rizhao Area, according to current geographic position, season, the time, meteorological condition,
The amount of radiation of light, floating dust concentration, working environment and dump energy, neatly change charge-discharge parameter, with Automatic adjusument lamp
Brightness, reasonable distribution energy reaches that the maximum of the energy is utilized with different discharge and recharge strategies, and ensures low Rizhao Area or length
Phase overcast and rainy street lamp normal illumination.
Carry out solar street lamp cell panel current detecting, battery tension detection, Inspecting Storage Battery SOC, and environment temperature
The detection of degree, and these dynamic datas are detected in real time.Pass through integration of the calculating current in time domain, so that it may draw discharge and recharge quantitative change
Change value is stored in system.System according to the data of 30 charge cycles (both 30 days), both can determine whether out residing season first.
Internal resistance value is measured using exchange pressure drop internal resistance measurement method, applies a fixed frequency and fixed current to battery, so
Its voltage is sampled afterwards, the internal resistance of the battery is calculated by discharge circuit after a series of processing such as over commutation, filtering
Value.When according to this this using the time as standard, it is possible to set up the relation curve of the cycle period of one electricity of internal resistance one, then pass through
Curve matching function draws the relational expression of internal resistance electricity and cycle period.Accumulator internal resistance and dump energy relation curve are such as
Figure, dump energy reduces with the increase of internal resistance into exponential trend.The battery electric quantity detected before street lamp work is as first
Beginning electricity, then dump energy subtract electric quantity change value for initial quantity of electricity.Integrated simultaneously by the output current to MPPT circuits,
As the corrected value of electric quantity change, so as to obtain accurate residual electric quantity.As shown in Figure 5.
Same day discharge capacity is obtained according to the real time electrical quantity in season and battery.With the brightness of Automatic adjusument lamp, rationally divide
Reach that the maximum of the energy is utilized with different discharge and recharge strategies with energy, and ensure low Rizhao Area or long-term overcast and rainy street lamp
Normal illumination.
(4) light fixture, is realized using the composition output circuit of the combination of Boost boost types and Buckt buck change-over circuits
Width funtion output adaptive fixtures parameters.The power of the load of user's setting can cross serial ports or the setting of external setting-up device of piece machine
After good.There is related initial setting up when dispatching from the factory, client can also carry out free setting.
System first starts Buckt buck change-over circuits, and Single-chip Controlling PWM outputs make output be gradually risen from 0V,
During the voltage x current that is exported by the continuous sample of sample circuit sample, by carrying out product calculation after calculus.Obtain in real time
Power, such as less than sets power.Single-chip microcomputer continues to control PWM pulsewidths to increase or decrease.Voltage is set to continue to rise.Such as close to setting
Power.Adjustment Single-chip Controlling step-length makes output be equal to setting power.If buck change-over circuit is unable to reach setting power
Boost boost type change-over circuits are started, until reaching stable output after setting power.
Described single-chip microcomputer preferred model STC15W408AS, STC12C5620AD, PIC16F687, PIC16F1783.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (6)
- The solar street lamp controller 1. a kind of self adaptation long-life samples, it is characterised in that solar cell module, long work week Phase energy-storage battery, Large Copacity energy-storage battery, single-chip microcomputer, charge switch array and discharge switch array, solar charging circuit, storage Battery, single-chip microcomputer, sample circuit,Solar cell module electric energy output end connects solar charging circuit electrical energy inputs, the solar charging circuit electricity Can output end connection battery incoming end, the solar charging circuit electric power signal output end connection sampling circuit samples signal Input, the sampling circuit samples signal output part connects single-chip microcomputer sampled signal input, the battery electric energy signal Output end connects sampling circuit samples signal input part, the sampling circuit samples signal output part connection single-chip microcomputer of connection battery Sampled signal input, the sampling feedback circuit signal input part connects single-chip microcomputer sampled feedback signal input, the list The control charge switch array work of piece machine, it is long-time cycle energy-storage battery, Large Copacity energy-storage battery to make solar cell module One of charging, Single-chip Controlling discharge switch array work, put one of long-time cycle energy-storage battery, Large Copacity energy-storage battery Electricity, is that light fixture is powered；The solar charging circuit includes：First electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor, second Resistance, 3rd resistor, the 4th resistance, the 5th transistor, the second triode, the first diode,First electric capacity one end connects solar cell module positive pole, and it is another that the solar cell module negative pole connects the first electric capacity End, first electric capacity one end is also connected with the first diode cathode, first diode cathode connect respectively first resistor one end and 5th transistor source, the 5th transistor gate connects the first resistor other end, the 5th transistor drain connection the Two electric capacity one end, the second electric capacity other end ground connection, the first resistor other end is also connected with the second transistor collector, institute The second transistor base connection second resistance one end is stated, the second resistance other end connects single-chip microcomputer charge information management end, The second transistor emitter connection ground, the first capacitance cathode connection whole machine of solar components, the first electric capacity negative pole ground connection, institute State the second capacitance cathode and be also connected with battery positive voltage, the second electric capacity negative pole ground connection, the 4th resistance one end connection accumulator positive Pole, the 4th resistance other end connects the 3rd capacitance cathode, the 3rd electric capacity negative pole ground connection, the 3rd electric capacity negative pole connection the Three resistance one end, the 3rd resistor other end connects battery terminal negative, and the 3rd capacitance cathode is also connected with the 9th voltage-stabiliser tube Negative pole, the 9th voltage-stabiliser tube positive pole is also grounded, and the 9th voltage-stabiliser tube negative pole is also connected with mu balanced circuit input, the voltage stabilizing Circuit output end connects the 4th electric capacity one end, the 4th electric capacity other end ground connection.
- The solar street lamp controller 2. the self adaptation long-life according to claim 1 samples, it is characterised in that the sampling Circuit includes：Voltage sampling circuit and current sampling circuit,The voltage sampling circuit signal input part connects solar charging circuit voltage signal output end, the voltage sample electricity Road signal output part connection single-chip microcomputer voltage signal inputs；The current sampling circuit signal input part connects solar recharging Circuit current signal output end, the current sampling circuit signal output part connects single-chip microcomputer current signal input.
- The solar street lamp controller 3. the self adaptation long-life according to claim 2 samples, it is characterised in that the voltage Sample circuit includes：5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st electricity Resistance, the 12nd resistance, the second diode, the 3rd diode, voltage comparator,5th resistance one end connects battery, and the 5th resistance other end connects voltage comparator power input, and described the Six resistance one end are grounded, and the 6th resistance other end connects voltage comparator inverting input and the 9th resistance one end respectively, The 9th resistance other end connects the tenth resistance one end and voltage comparator positive input respectively, and the 11st resistance is another One end connect voltage comparator voltage signal inputs, the tenth resistance other end connect respectively single-chip microcomputer signal input and Second diode cathode, the second diode cathode ground connection, affiliated 6th resistance one end is also connected with the 7th resistance one end, described The 7th resistance other end connects voltage comparator output end and the 8th resistance one end respectively, the 8th resistance other end connection the The 12nd resistance other end described in 12 resistance one end connects single-chip microcomputer signal input, the 12nd resistance other end connection 3rd diode cathode, the 3rd diode cathode ground connection.
- The solar street lamp controller 4. the self adaptation long-life according to claim 2 samples, it is characterised in that the electric current Sample circuit includes：13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 5th electric capacity, the 6th electric capacity, Four diodes, the 5th diode,Solar cell module current signal end connects the 13rd resistance one end, and the 13rd resistance other end connects the respectively 14 resistance one end and the 5th electric capacity one end, described 5th electric capacity one end are also connected with the 4th diode cathode and single-chip microcomputer electric current letter Number input, the 5th electric capacity other end connects the 14th resistance other end and the 4th diode cathode, the four or two pole Pipe positive pole is also connected with the 5th diode cathode, and the 5th diode cathode connects single-chip microcomputer signal input, the described 5th 2 Pole pipe positive pole is also respectively connected with the 6th electric capacity one end and the 16th resistance one end, and the 6th electric capacity other end connects the 5th respectively Diode cathode and the 16th resistance other end, described 16th resistance one end are also connected with the 15th resistance one end.
- The solar street lamp controller 5. the self adaptation long-life according to claim 1 samples, it is characterised in that the charging Switch arrays include the first transistor and third transistor,Discharge switch array includes transistor seconds and the 4th transistor, the first charging signals output end connection first of single-chip microcomputer Transistor gate, the second charging signals output end connection third transistor grid of single-chip microcomputer, the first discharge signal of single-chip microcomputer Output end connects transistor seconds grid, and the second discharge signal output end of single-chip microcomputer connects the 4th transistor gate；The first transistor source electrode connects transistor seconds drain electrode and Large Copacity energy-storage battery positive pole, the transistor seconds leakage respectively Pole connection super capacitor one end, the super capacitor other end connects solar panel negative pole；The third transistor drain electrode connection long-time cycle energy-storage battery positive pole, the third transistor source electrode is also connected with the 4th Transistor drain, described 4th transistor drain connection super capacitor one end.
- The solar street lamp controller 6. the self adaptation long-life according to claim 1 samples, it is characterised in that the farm labourer Make cycle energy-storage battery to replace using super capacitor,The long-time cycle energy-storage battery negative pole connects solar cell module negative pole, and the Large Copacity energy-storage battery negative pole connects Solar cell module negative pole is connect, the long-time cycle energy-storage battery is replaced using super capacitor, described super capacitor one end Road lamp positive pole is also connected with, the super capacitor other end connects road lamp negative pole.
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| CN108521166A (en) * | 2018-04-23 | 2018-09-11 | 西南大学 | A kind of MPPT charging systems and the implementation method that charges |
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| CN201059457Y (en) * | 2007-07-02 | 2008-05-14 | 广东科信实业有限公司 | Solar energy LED flashlamps |
| CN203120233U (en) * | 2013-01-14 | 2013-08-07 | 安徽精能绿色能源有限公司 | Solar charging constant current output all-in-one machine |
| CN104135800A (en) * | 2014-08-11 | 2014-11-05 | 国家电网公司 | Solar LED street lamp control system and method based on photovoltaic power generation |
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Address after: 400039 Chongqing Jiulongpo Branch City Road No. 71 of No. 1 students Pioneering Park B2 building 7 layer Patentee after: Chongqing Phaeton energy Limited by Share Ltd Address before: 400039 Chongqing Jiulongpo Shiqiaopu Fontainebleau Road No. 160 of 8-1 Patentee before: Chongqing Hiten Photoelectric Co., Ltd. |