CN100491813C

CN100491813C - Energy-storage type solar energy LED lamp

Info

Publication number: CN100491813C
Application number: CNB2007100310506A
Authority: CN
Inventors: 雷宗平
Original assignee: 雷宗平
Current assignee: Guangdong Yu Yuan Solar Energy Technology Co., Ltd.
Priority date: 2007-10-25
Filing date: 2007-10-25
Publication date: 2009-05-27
Anticipated expiration: 2027-10-25
Also published as: CN101144580A

Abstract

The invention discloses an energy storage type solar LED lamp. The invention comprises a solar battery panel, a storage battery, a LED load and controller, wherein, the controller comprises a system detecting circuit, a state detecting circuit, a storage battery voltage detecting circuit, a clock controller, and a pulse adjusting circuit; the controller can automatically adjust the output impulse frequency through the pulse adjusting circuit, and adjust the output power through testing the capability of the storage battery and according to the capability of the storage battery,, thus the LED lamp has high efficiency and outstanding energy saving effect when the LED lamp is operated under perfect pulse condition. The energy storage type solar LED lamp of the invention has the advantages of environmental protection, safety, easy installation, good application effect, and small maintaining quantity, thus the invention can be widely applied to the lighting in the street and the courtyard.

Description

A kind of energy-storage type solar energy LED lamp

Technical field

The present invention relates to a kind of illuminating lamp, particularly a kind ofly utilize solar panel to charge a battery, and regulate the energy-storage type solar energy LED lamp of luminous power according to accumulator capacity automatically.

Background technology

Solar lamp does not need to install electric wiring or pre-buried cable because of it, easy for installation, and do not need electricity charge usage charges after installing, being widely used in garden decorates, road lighting etc., but present energy-saving solar lamp generally adopts the mode of constant current control, controller can not detect the capacity of battery automatically and regulate intensity of illumination automatically according to capacity, when the accumulator capacity foot, it can be working properly, during off-capacity, the electric weight of the battery that it uses up just quits work, and no matter the LED lamp that adopts constant current mode operation is what of accumulator capacity, it all is operated under the rated power, and the power that the LED lamp consumes can not change automatically with battery capacity.Under the certain situation of capacity, be difficult to satisfy illumination for a long time, the scope of application is affected.Conventional solar LED street lamp controller, the control of employing constant-current source, its efficient the most about 80%, luminous efficiency is lower, and because the long-term work of LED lamp pearl is under constant current state, its LED lamp pearl brightness decay is bigger, influences the service life of LED lamp, cause the increase of use cost, aspect cost performance, lack the market competitiveness.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides and a kind ofly can detect accumulator capacity automatically, and regulate luminous power automatically according to accumulator capacity, use reliable, effective energy-storage type solar energy LED lamp.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of energy-storage type solar energy LED lamp, comprise solar energy circuit plate, battery, LED load and controller, described controller comprises system's testing circuit, system's testing circuit input termination solar panel, output is connected to state detection circuit, accumulator voltage detecting circuit, clock controller and charging control circuit; State detection circuit, accumulator voltage detecting circuit and clock controller connect state and switch the output abnormality holding circuit, and state switches the output abnormality holding circuit and connects power take off by pulse modulated circuit, and power take off connects the LED load; The anodal battery positive voltage that connects of solar panel, battery is connected with power module; The entire circuit system is by power module or storage battery power supply.

In addition, further, described pulse modulated circuit comprises pulse width modulator and coupled linear saw-tooth wave generator.

The invention has the beneficial effects as follows: energy-storage type solar energy LED lamp of the present invention, its controller includes system's testing circuit, state detection circuit, accumulator voltage detecting circuit, clock controller and pulse modulated circuit, controller can be by the detection to accumulator capacity, different according to accumulator capacity with setting-up time, load LED lamp is operated under the corresponding power, the caloric value of LED is littler than working under constant current, decay of luminescence speed is slowed down, prolong service life relatively, in the power ratio identical down with constant current, the visual angle brightness of the LED lamp of use pulsewidth modulation is obviously bright than the LED lamp with constant-current source, and energy-saving effect is outstanding; Power take off is operated under the on off state of approximate ideal, thus the efficient height of controller, thus the electric weight of battery is carried out fully effectively management, by rational design configurations, make solar street light break through overcast and rainy notion, street lamp was accomplished 1 year 365 days, all bright everyday lamp.Adopt the LED light fixture of controller of the present invention that environmental protection, safe, easy for installation, advantage such as result of use is good, maintenance is little are arranged, can be widely used in illuminations such as road, garden.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a control circuit functional-block diagram of the present invention;

Fig. 2 is the control circuit functional-block diagram of the embodiment of the invention;

Fig. 3 is the detection comparator circuit diagram of the embodiment of the invention;

Fig. 4 is the pulse modulated circuit figure of the embodiment of the invention;

Fig. 5 is the 5th comparator circuit figure of the embodiment of the invention;

Fig. 6 is the charging control circuit figure of the embodiment of the invention;

Fig. 7 is the clock control circuit figure of the embodiment of the invention;

Fig. 8 is the power module circuitry figure of the embodiment of the invention;

Fig. 9 is the accumulator voltage detecting circuit figure of the embodiment of the invention;

Figure 10 is another power module circuitry figure of the embodiment of the invention.

The specific embodiment

Referring to figs. 1 through Figure 10, a kind of energy-storage type solar energy LED lamp, comprise solar energy circuit plate S1, battery S11, LED load S8 and controller, described controller comprises the testing circuit S2 of system, the testing circuit S2 of system input termination solar panel S1, output is connected to state detection circuit S3, accumulator voltage detecting circuit S6, clock controller S9 and charging control circuit S10; State detection circuit S3, accumulator voltage detecting circuit S6 and clock controller S9 connect state and switch output abnormality holding circuit S7, state switches output abnormality holding circuit S7 and meets power take off S5 by pulse modulated circuit S4, and power take off S5 meets LED load S8; The anodal S+ of solar panel S1 connects the anodal B+ of battery S11, and battery S11 is connected with power module S12, and the entire circuit system is by power module S12 or battery S11 power supply.

In addition, further, described pulse modulated circuit S4 comprises pulse width modulator S36 and coupled linear saw-tooth wave generator.

Described state detection circuit comprises detection comparator S31, triode Q3 and the 5th comparator IC5, and detection comparator comprises the first comparator IC1 and the second comparator IC2; The input in the same way 3 of comparator IC1 meets the first reference voltage U1, reverse input end 2 meets anodal S+ of solar panel S1 and clock controller S9 output D, the input in the same way 5 that connects the second comparator IC2 behind the anodal B+ of the output 1 multiple-connected battery S11 of the first comparator IC1, reverse input end 6 meets the second reference voltage U2, and the output 7 of the second comparator IC2 meets state detection circuit S3 and the 5th comparator IC5; The output 7 series diode D5 of the second comparator IC2 form a branch road; the anodal S+ series diode D4 of solar panel S1 forms another branch road; article two, connect triode Q3 base stage after the branch road parallel connection; meet the first reference voltage U1 behind triode Q3 colelctor electrode one tunnel series resistance R4; behind the series diode D14 of another road with the anodal B+ of battery S11 and connect the input in the same way 10 of the 5th comparator IC5; triode Q3 grounded emitter; the reverse input end 9 of the 5th comparator IC5 meets the second reference voltage U2, and output 8 connects state and switches output abnormality holding circuit S7.

Described accumulator voltage detecting circuit S6 also comprises the 8th comparator IC8; the input in the same way 18 of the 8th comparator IC8 meets the anodal B+ of battery S11 by spacing resistance; reverse input end 19 meets the second reference voltage U2, and output 20 connection status of the 8th comparator IC8 are switched output abnormality holding circuit S7.

Described clock controller S9 comprises clock chip IC7, and clock chip IC7 is connected with time switch, clock chip IC7 output D connection status testing circuit S3 and pulse modulated circuit S4.

Described state switches output abnormality holding circuit S7 and pulse modulated circuit S4 comprises linear saw-tooth wave generator IC3, pulse width modulator S36 and the 4th comparator IC4; linear saw-tooth wave generator IC3 connects the 4th comparator IC4 input 12 in the same way; pulse width modulator S36 connects the 4th comparator IC4 reverse input end 13, the four comparator IC4 outputs 11 and meets power take off S5 by current-limiting resistance R8.

Described power take off S5 comprises FET Q10, and FET Q10 grid meets current-limiting resistance R8, source ground, and drain electrode connects the LED lamp cathode, meets the anodal B+ of battery S11 behind the LED lamp anode series resistor.

Described charging control circuit S10 comprises the 6th comparator IC6, photoelectrical coupler, triode Q9 and FET Q11, the 6th comparator IC6 input 15 is in the same way leaded up to spacing resistance and is met the anodal B+ of battery S11, another road is by pull-up resistor R37 ground connection, reverse input end 16 meets the second reference voltage U2, output 17 connects triode Q9 base stage by resistance R 38, triode Q9 colelctor electrode meets the first reference voltage U1 by resistance R 41, grounded emitter, photoelectrical coupler input side one end connects triode Q9 colelctor electrode, other end ground connection, the outlet side one termination second reference voltage U2, the grid of another termination FET Q11, FET Q11 grounded drain, source electrode meet solar panel S1 negative pole S-.

Described pulse width modulator S36 comprises triode Q5, triode Q5 colelctor electrode one tunnel connects the reverse input end 13 of the 4th comparator IC4, another road meets the first reference voltage U1, grounded emitter, be parallel with triode Q6, triode Q12 and triode Q13 between emitter and collector, the base stage of triode Q6, triode Q12 and triode Q13 is connected the 5th comparator IC5 output 8, the 8th comparator IC8 output 20 and clock chip IC7 output D successively.

Specify the course of work of embodiment of the invention circuit below.

As solar panel cathode voltage S+ during greater than battery positive voltage B+ voltage; and battery positive voltage B+ voltage is during less than over-charge protective voltage; the 15 pin voltages of comparator IC6 are less than the second reference voltage U2; output 17 pin output low levels; triode Q9 ends; photoelectrical coupler must conduct; the grid high potential of FET Q11; make source electrode; the drain electrode conducting; the anodal S+ process of solar panels diode D1, diode D2, battery positive voltage, battery terminal negative, the FET Q11 drain-source utmost point are to solar panels negative pole S-, to charge in batteries.When battery tension rose to overshoot voltage, the 15 pin voltages of the 6th comparator IC6 were greater than the second reference voltage U2, and 17 pin are exported high potential.Triode Q9 conducting, photoelectrical coupler do not have electric current by, FET Q11 ends.Solar panels stop charge in batteries, and battery tension falls back to one regularly, and the 15 pin voltages of the 6th comparator IC6 are less than the second reference voltage U2, and 17 pin output electronegative potential repeats the action of front, and electric power storage is also charged.

As solar panel cathode voltage S+ during greater than the capping value, the 2 pin voltages of the first comparator IC1 are greater than 3 pin voltages, 1 pin output LOW voltage, and then 5 pin of the second comparator IC2 are low level, 7 pin output low levels; Triode Q3 is the high voltage conducting because of base stage, and 10 pin of IC5 then are low level, 8 pin output LOW voltages.7 pin, 8 pin be low-voltage then triode Q8 end, triode Q5 conducting, 13 pin of IC4 are low level, 11 pin output low levels, FET Q10 ends, the LED lamp goes out.

As solar panel cathode voltage S+ during less than preset lower limit, the 3 pin voltages of the first comparator IC1 are greater than 2 pin voltages, then 1 pin is exported high level, 1 dividing potential drop of 5 pin that battery positive voltage B+ gives the second comparator IC2 by resistance R 25, resistance R 24, resistance R 21, when battery positive voltage B+ voltage was high, 5 pin voltages were greater than the second reference voltage U2,7 pin output high level, when battery positive voltage B+ voltage was low, 5 pin voltages were less than the second reference voltage U2,7 pin output low levels.When 7 pin of the first comparator IC1 are high voltage, then 8 pin of the 5th comparator IC5 output storage battery is a low level, then triode Q5 ends, the first reference voltage U1 is by resistance R 9, resistance R 12 dividing potential drops are given 13 pin of comparator IC4, linear saw-tooth wave generator IC3 output high frequency linearity sawtooth waveforms is to 12 pin of comparator IC4, then 11 pin of the 4th comparator IC4 output broad pulse square wave is given FET Q10, FET Q10 is in controlled on off state, the LED lamp is then worked under rated power, when accumulator capacity is above above 80%, the anodal B+ voltage of battery S11 is near the highest, then 20 pin of the 8th comparator IC8 are exported high level, then conducting of triode Q12, the 13 pin voltages of the 4th comparator IC4 will descend, the defeated broad pulse of 11 pin will reduce, and cause the LED lamp in the adverse consequences that surpasses rated power work with balance because of the anodal B+ overtension of battery S11.When the anodal B+ voltage of battery S11 falls back to certain voltage, the 20 pin output low levels of the 8th comparator IC8, the LED lamp will recover in former duty.When setting surely then, the 13 pin output high level of clock controller IC7,2 pin of one road to the 4th comparator IC4, then 1 pin is a low-voltage, then 7 pin also are low-voltage, then triode Q3 ends, the 8 pin output HIGH voltages of the 5th comparator IC5, triode Q6 conducting, another road is added to the base stage of triode Q13, also conducting of triode Q13 is exported narrow pulse width signal through FET Q10 with 11 pin that make comparator IC4, makes the LED lamp be operated in that Morning Has Broken under the small-power state.When accumulator capacity drops to 40%, the anodal B+ voltage of battery S11 descends, then 7 pin of the second comparator IC2 are low-voltage, and the Shi Dingwei that sets then, then 8 pin of the 5th comparator IC5 are high voltage, triode Q6 conducting, the pulse signal of the 11 pin output broad of the 4th comparator IC4 is through FET Q10, the LED lamp is operated under the more high-power state, when setting-up time then, high level of 13 pin output of clock controller IC7 is given triode Q13 base stage, triode Q13 conducting, triode Q6, the conducting of triode Q13 makes the 11 pin output burst pulse of the 4th comparator IC4 give FET Q10, LED is transferred under the small-power state by more high-power state work daybreak.

Daytime, because light is strong, the solar cell panel voltages height.Voltage and each comparator that detection system detects solar panel compare; when being higher than, the voltage on the solar panel set to close modulating voltage comparator when above; the 4th comparator, the 5th comparator IC5 output LOW voltage signal switch the output abnormality holding circuit to state; switch output LOW voltage signal is to pulse width modulator; make its output LOW voltage give power take off; power take off turn-offs the electric current of LED load, and lamp goes out.When the voltage of solar panels rises above battery tension, compare charge in batteries by the 6th comparator IC6.When battery is full of electricity, the 6th comparator IC6 will control charge controller and stop the charging of solar panel to battery.

In the time of at dusk, because a little less than the light, the solar panel electricity is low, solar cell panel voltages drops to sets the voltage of turning on light when following, time is controlled the work that picks up counting, time can be set according to designing requirement, and the while detection system is to the 4th comparator, the 5th comparator IC5 output voltage, make the 4th comparator, the 5th comparator IC5 compares battery tension, when battery surpasses 60%, detection comparator is failed the two-way high voltage, one the tunnel to output to the 5th comparator IC5 right, make the 5th comparator IC5 to output LOW voltage, another road outputs to state and switches the output abnormality holding circuit, make pulse width modulator output wide pulse signal give power take off, power take off output long duration current is given the LED lamp, make it luminous under rated power, when the capacity of battery is above above 80%, high voltage signal of the 8th comparator output switches the output abnormality holding circuit to state, make the narrow slightly pulse signal of pulse width controller output give power take off, cause the LED lamp to surpass the adverse consequences of rated power work because of battery tension is too high with balance, when the capacity of battery drops to 70%, the 8th comparator output LOW voltage makes the arteries and veins modulator return to the broad pulse state, and the LED lamp is worked under rated power; When the capacity of battery also 40% when above; and time controller is set when time is up; time controller output two-way high voltage; one the road to state switching output abnormality holding circuit; another road is to detection system; make the 4th comparator output two-way low-voltage, one road to the 5th comparator, then the 5th comparator output HIGH voltage switches the output abnormality holding circuit to state.Another road low-voltage of the 4th comparator also outputs to state and switches the output abnormality holding circuit; state switches the low-voltage that the output abnormality holding circuit is received detection comparator; the high voltage of the 5th comparator and time controller; it makes pulse width modulator output narrow pulse signal give power take off, and the LED lamp is worked daybreak below 30% rated power.When the capacity of battery drops to 40%; and the time that the time controller that time controller is set is set is not then; the 4th comparator switches all output LOW voltage signals of output abnormality holding circuit to the 5th comparator and state; then the 5th comparator output HIGH voltage switches the output abnormality holding circuit to state; make pulse width modulator output give power take off, then LED lamp work down about half rated power than broad pulse.Time is up when the time controller, and it has a high voltage signal to switch the output abnormality holding circuit to state, makes pulse width modulator output narrow pulse signal give power take off, and then the LED lamp is worked daybreak below 30% rated power.

In the energy-saving solar LED lamp controller of the present invention, include system's testing circuit, state detection circuit, accumulator voltage detecting circuit, clock controller and pulse modulated circuit, controller can be by the detection to accumulator capacity, different according to accumulator capacity with setting-up time, load LED lamp is operated under the corresponding power, the caloric value of LED is littler than working under constant current, decay of luminescence speed is slowed down, prolong service life relatively, in the power ratio identical down with constant current, the visual angle brightness of the LED lamp of use pulsewidth modulation is obviously bright than the LED lamp with constant-current source, and energy-saving effect is outstanding; Power take off is operated under the on off state of approximate ideal, thus the efficient height of controller, thus the electric weight of battery is carried out fully effectively management, by rational design configurations, make solar street light break through overcast and rainy notion, street lamp was accomplished 1 year 365 days, all bright everyday lamp.The present invention has environmental protection, safe, easy for installation, advantage such as result of use is good, maintenance is little, can be widely used in illuminations such as road, garden.

Battery tension is 12V in the embodiment of the invention, and the desirable first reference voltage U1 is 9V, and the second reference voltage U2 is 5V; Cell voltage is 24V; the desirable first reference voltage U1 is 12V; the second reference voltage U2 is 5V; set the pass modulating voltage and get 6V; the setting voltage of turning on light is got 4V; above electric pressure can be supplied with by power module such as 78L12,78L05,78L09 lamp; sawtooth waveforms can be provided by 555 linear saw-tooth wave generators; clock signal can be provided by single-chip microcomputer MAX9489 etc.; certainly; also can be the circuit or the chip of the identical or similar functions of having of other, so long as modification and the variation done according to protection scope of the present invention, all still belong in the scope that the invention contains.

Claims

1, a kind of energy-storage type solar energy LED lamp, comprise solar energy circuit plate (S1), battery (S11), LED load (S8) and controller, it is characterized in that described controller comprises system's testing circuit (S2), system's testing circuit (S2) input termination solar panel (S1), output is connected to state detection circuit (S3), accumulator voltage detecting circuit (S6), clock controller (S9) and charging control circuit (S10); State detection circuit (S3), accumulator voltage detecting circuit (S6) and clock controller (S9) connect state and switch output abnormality holding circuit (S7), state switches output abnormality holding circuit (S7) and connects power take off (S5) by pulse modulated circuit (S4), and power take off (S5) connects LED load (S8); Solar panel (S1) anodal (S+) connects battery (S11) anodal (B+), and battery (S11) is connected with power module (S12); The entire circuit system is by power module (S12) or battery (S11) power supply; Described pulse modulated circuit (S4) comprises pulse width modulator (S36) and coupled linear saw-tooth wave generator; Described state detection circuit comprises detection comparator (S31), first triode (Q3) and the 5th comparator (IC5), and detection comparator comprises first comparator (IC1) and second comparator (IC2); The input in the same way (3) of comparator (IC1) connects first reference voltage (U1), reverse input end (2) connects solar panel (S1) anodal (S+) and clock controller (S9) output (D), output (1) multiple-connected battery (S11) of first comparator (IC1) anodal (B+) back connects the input in the same way (5) of second comparator (IC2), reverse input end (6) connects second reference voltage (U2), and the output (7) of second comparator (IC2) connects state detection circuit (S3) and the 5th comparator (IC5); Output (7) series connection first diode (D5) of second comparator (IC2) forms a branch road; positive pole (S+) series connection second diode (D4) of solar panel (S1) forms another branch road; article two, connect first triode (Q3) base stage after the branch road parallel connection; first triode (Q3) colelctor electrode one road is connected and is connect first reference voltage (U1) behind first resistance (R4); another road connect the 3rd diode (D14) back and battery (S11) positive pole (B+) and connect the input in the same way (10) of the 5th comparator (IC5); first triode (Q3) grounded emitter; the reverse input end (9) of the 5th comparator (IC5) connects second reference voltage (U2), and output (8) connects state and switches output abnormality holding circuit (S7).

2, a kind of energy-storage type solar energy LED lamp according to claim 1; it is characterized in that described accumulator voltage detecting circuit (S6) also comprises the 8th comparator (IC8); the input in the same way (18) of the 8th comparator (IC8) connects battery (S11) anodal (B+) by the first spacing resistance; reverse input end (19) connects second reference voltage (U2), and output (20) connection status of the 8th comparator (IC8) is switched output abnormality holding circuit (S7).

3, a kind of energy-storage type solar energy LED lamp according to claim 1, it is characterized in that described clock controller (S9) comprises clock chip (IC7), clock chip (IC7) is connected with time switch, clock chip (IC7) output (D) connection status testing circuit (S3) and pulse modulated circuit (S4).

4, a kind of energy-storage type solar energy LED lamp according to claim 1; it is characterized in that described state switches output abnormality holding circuit (S7) and pulse modulated circuit (S4) comprises linear saw-tooth wave generator (IC3), pulse width modulator (S36) and the 4th comparator (IC4); linear saw-tooth wave generator (IC3) connects the 4th comparator (IC4) input (12) in the same way; pulse width modulator (S36) connects the 4th comparator (IC4) reverse input end (13), and the 4th comparator (IC4) output (11) connects power take off (S5) by first current-limiting resistance (R8).

5, a kind of energy-storage type solar energy LED lamp according to claim 4, it is characterized in that described power take off (S5) comprises first FET (Q10), first FET (Q10) grid connects first current-limiting resistance (R8), source ground, drain electrode connects the LED lamp cathode, and the LED lamp anode connects battery (S11) anodal (B+) after being connected in series second resistance.

6, a kind of energy-storage type solar energy LED lamp according to claim 1, it is characterized in that described charging control circuit (S10) comprises the 6th comparator (IC6), photoelectrical coupler, second triode (Q9) and second FET (Q11), the 6th comparator (IC6) input (15) is in the same way leaded up to the second spacing resistance and is connect battery (S11) anodal (B+), another road is by first pull-up resistor (R37) ground connection, reverse input end (16) connects second reference voltage (U2), output (17) connects second triode (Q9) base stage by the 3rd resistance (R38), second triode (Q9) colelctor electrode connects first reference voltage (U1) by the 4th resistance (R41), grounded emitter, photoelectrical coupler input side one end connects second triode (Q9) colelctor electrode, other end ground connection, outlet side one termination, second reference voltage (U2), the grid of another termination second FET (Q11), second FET (Q11) grounded drain, source electrode connects solar panel (S1) negative pole (S-).

7, according to claim 1 or 4 described a kind of energy-storage type solar energy LED lamps, it is characterized in that described pulse width modulator (S36) comprises the 3rd triode (Q5), the 3rd triode (Q5) colelctor electrode one tunnel connects the reverse input end (13) of the 4th comparator (IC4), another road connects first reference voltage (U1), grounded emitter, between emitter and collector, be parallel with the 4th triode (Q6), the 5th triode (Q12) and the 6th triode (Q13), the 4th triode (Q6), the base stage of the 5th triode (Q12) and the 6th triode (Q13) is connected the 5th comparator (IC5) output (8) successively, the 8th comparator (IC8) output (20) and clock chip (IC7) output (D).