CN1838506A - Solar capacitance type voltage-boosting photo-voltaic power supply - Google Patents
Solar capacitance type voltage-boosting photo-voltaic power supply Download PDFInfo
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- CN1838506A CN1838506A CNA2005100098443A CN200510009844A CN1838506A CN 1838506 A CN1838506 A CN 1838506A CN A2005100098443 A CNA2005100098443 A CN A2005100098443A CN 200510009844 A CN200510009844 A CN 200510009844A CN 1838506 A CN1838506 A CN 1838506A
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- diode
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- capacitor
- photovoltaic cell
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
Abstract
This invention relates to a solar condenser type booster photovoltaic power. The anode of the photovoltaic battery is in series with the diode D1 through resistance R1 and connects with the shunt-wound anode of the capacitance C1,C2,Cx-1,Cx, and the photovoltaic battery's cathode connects with the anode of the capacitance C1,C2,Cx-1,Cx, and the space between the cathode and anode of capacitance C1,C2,Cx-1,Cx connects with the voltage-stabiliser diode D2, diode D1, and the two end of the capacitance C1,C2,Cx-1,Cx connect with the inductance L, the other end of the inductance L connects with the input end of the chip Ic1 and the anode of the diode D3, and the output end of the chip Ic1 connects with the anode end of the diode D3 and the anode end of the capacitance C0, and the anode of the chip Ic1 and the capacitance C0 connect with the earth, and the chip Ic1's output end and the earthing end connect to the circuit which composed of the triode T1,T2,T3, resistance R2,R3 and light emitting diode D. The advantage in this invention is that the using life is long, the temperature range is broader, the volume is small, and it is easy to maintain.
Description
Technical field
The present invention relates to a kind of power supply, especially is electric energy and the power supply that is stored in driven for emitting lights led lighting in the electric capacity with conversion of solar energy.
Background technology
Along with rapid development of economy; also with energy crisis, Three Difficult Issues such as environmental pollution and sustainable development pendulum is in face of human, the continuous minimizing of the rapid growth of population, coal, petroleum-based energy; increasing the weight of day by day of environmental pollution forces the mankind to have to explore the new forms of energy of high-efficiency cleaning.Solar cell has light weight, the life-span is long, reliability is high, pollution-free, noiseless, radioresistance, can bear all-environment variation and have very high sensitivity, wide spectral response and good linearty.Solar energy will become one of human following existence, the needed important energy source of life.Today of development in science and technology, human comprehensive utilization solar energy is less than 10% still, is example with power consumption big country Germany, and its annual energy consumption only is 1/80th of year this state of solar energy impinges, and the human bottleneck that makes full use of solar energy of restriction is storage.It is common conversion and storage means in storage battery that solar energy is changed into power storage through photovoltaic cell.But the life of storage battery is shorter, discharges and recharges to be about 300-500 time, normally must change in 2-3.In addition, lead accumulator need be done the work of making regular check on of replenishing of electrolyte and specific gravity test and so on.Maintenance is wasted time and energy, and the heavy metal of leaded and cadmium of storage battery and so on, storage battery are scrapped the back and brought secondary pollution to natural environment, and the battery-operated temperature range is narrower, is 0 °-45 °, and this is can't operate as normal for system in the cold climate condition.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, provide a kind of simple in structure, reasonable in design, saves energy, free of contamination solar capacitance type voltage-boosting photo-voltaic power supply.
In order to achieve the above object, the technical solution used in the present invention is: the anode of photovoltaic cell is through resistance R
1Serial connection diode D
1With capacitor C in parallel
1, C
2, C
X-1, C
xPositive pole joins, photovoltaic cell negative pole and capacitor C
1, C
2, C
X-1, C
xNegative terminal join capacitor C
1, C
2, C
X-1, C
xCross-over connection voltage stabilizing didoe D between the positive and negative two ends
2, diode D
1And capacitor C
1, C
2, C
X-1, C
xBe connected to inductance L on the contact at two ends, the inductance L other end respectively with chip I
C1Input and diode D
3Anode join chip I
C1Output and diode D
3Negative terminal and capacitor C
0Anode joins, chip I
C1Negative terminal and capacitor C
0Negativing ending grounding, chip I
C1Output and ground be connected to by triode T
1, T
2, T
3, resistance R
2, R
3And the circuit that light-emitting diode D forms links to each other.
Advantage of the present invention is:
Simple in structure, reasonable in design, saves energy, pollution-free, this device changes into power storage with solar energy in farad level electric capacity through photovoltaic cell, has realized power storage.This installs long service life, and temperature range is wide, and volume is little, and is in light weight, easy care.
Description of drawings
Fig. 1 is a plurality of light-emitting diode D of a present invention series circuit schematic diagram;
Fig. 2 is a plurality of light-emitting diode D of a present invention parallel circuits schematic diagram;
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
By Fig. 1-Fig. 2 as can be known, the present invention is that the anode of photovoltaic cell 1 is through resistance R
1Serial connection diode D
1With capacitor C in parallel
1, C
2, C
X-1, C
xPositive pole joins, photovoltaic cell 1 negative pole and capacitor C
1, C
2, C
X-1, C
xNegative terminal join capacitor C
1, C
2, C
X-1, C
xCross-over connection voltage stabilizing didoe D between the positive and negative two ends
2, diode D
1And capacitor C
1, C
2, C
X-1, C
xBe connected to inductance L on the contact at two ends, the inductance L other end respectively with chip I
C1Input and diode D
3Anode join chip I
C1Output and diode D
3Negative terminal and capacitor C
0Anode joins, chip I
C1Negative terminal and capacitor C
0Negativing ending grounding, chip I
C1Output and ground be connected to by triode T
1, T
2, T
3, resistance R
2, R
3And the circuit that light-emitting diode D forms links to each other.
Chip I
C1Output and triode T
3Be connected to a plurality of light-emitting diode D between the collector electrode.
Referring to Fig. 1, solar radiation is on photovoltaic cell, and excitation electron---the hole is right.Under the effect of internal electric field, there is the photo-generated carrier accumulation on the both sides, space charge region and produces voltage, the positive terminating resistor R of photovoltaic cell
1, the photovoltaic cell negativing ending grounding, photovoltaic cell is through resistance R
1Diode D
1To capacitor C
1, C
2... C
X-1, C
XCharging.R wherein
1Play the ballast effect; Schottky two newspaper pipe D play the reverse-current protection effect; C
1, C
2... C
X-1, C
XBe the farad level double layer capacitor of parallel connection, its number X in parallel is determined by load.D
2Be the overvoltage protection diode.By inductance L, chip I
C1, Schottky diode D
3, electrochemical capacitor C.Form booster circuit.Work as chip IC
1, during conducting, C
1, C
2... C
X-1, C
XTo inductive energy storage, inductive current increases, and induced electromotive force is that a left side is positive right negative, and load is by capacitor C.Power supply.Work as chip I
C1When ending, inductive current reduces, and induced electromotive force is that the right side is just being born in a left side, and energy discharges and C in the inductance L
1, C
2... C
X-1, C
XThe suitable polarity unanimity of the voltage of input is through diode D
3Power to the load, and simultaneously to capacitor C
0Charging.Periodic duty can be by C
1, C
2... C
X-1, C
XThe low-voltage direct at two ends is transformed into high voltage direct current.
By R2, the control circuit that T1 forms, wherein R2 is a current-limiting resistance, and T1 is a phototriode. and when rayed during at T1, T2 does not work, and light-emitting diode is not also worked. and when being radiated at photosensitive three utmost points, the T2 plumber makes light-emitting diode and also works when unglazed.
T2, T3, R3, D forms drive circuit, and a plurality of light-emitting diode D adopt serial or parallel connection among Fig. 4.
At present, commercial farad level double layer capacity on the market, operating voltage 2.3v-2.7v, capacity are 50F-60F ratio of performance to price the best.And redness commonly used, Yellow luminous diode operating voltage be generally at 1.8v-2.3v, and blue, white, green emitting diode minimum is all greater than 2v.
Now with the electric capacity of 2.3v, 60F, driving the emitting red light diode is example, relatively adopts electric capacity directly to drive and utilize the capacity usage ratio of capacitance boost drives Light-Emitting Diode.
The energy that is stored in the electric capacity is generally: W=1/2CV
21.
In the formula: W is an energy in the storage capacitance, units of joules
C is the unit of capacity farad
V is the voltage unit volt
2.3V then, the maximum storage energy in the electric capacity of 60F is
W
0=1/2 * 60F * 2.3
2V
2=158.7 joules
If 1.8V is for driving the minimum of red light emitting diodes, the energy that utilizes electric capacity directly to drive the work of emitting red light diode is:
W
1=1/2 * 60F * (2.3
2-1.8
2) V
2=61.5 joules.
Adopt booster circuit, when the output voltage of electric capacity was 0.5V, the voltage of the output after boosting was greater than the threshold value that drives the emitting red light diode, and the energy that then can drive the emitting red light diode after boosting is:
W
2=1/2 * 60F * (2.3
2-0.5
2) V
2=151.2 joules.
Because the loss of booster circuit, the efficient of establishing booster circuit is than η=82%.The then actual energy that is used to drive red light emitting diodes after boosting is:
W
3=η * W
2=0.82 * 151.2=123.984 joule.
Compare W
1With W
3As can be known, adopt the capacity usage ratio of booster circuit electric capacity to be doubled.
Because adopt photovoltaic cell at present, the capacitance stores electricity drove in the circuit of semiconductor light emitting diode the most afterwards, the price of capacitor is the price of decision systems almost.Can save half electric capacity after adopting booster circuit, its meaning is fairly obvious.
Generally speaking, the operating voltage of orchid, green LED is between the 2.8-3.6 volt.If adopt electric capacity to drive, then capacitances in series need be used, existing is example with 2.3V, 60F electric capacity still, if two strings two also then need 4 electric capacity, voltage is 4.6 volts, capacity is 60F, then the energy of capacitance stores:
W
0=1/2 * 60 * 4.6
2=634.8 joules.
If 3.4v is blue, the operating voltage of green emitting diode, the energy that then utilizes electric capacity directly to drive diode is:
W
1=1/2 * 60 * (4.6
2-3.4
2)=288 joule.
Adopt booster circuit, when the electric capacity output voltage is 0.5 volt, the output voltage after boosting still is higher than 3.4 volts.(4 electric capacity parallel connections this moment), then its energy is:
W
2=1/2 * 60 * 4 * (2.3
2-0.5
2)=604 joule.
The efficient of booster circuit is than η=0.82
W
2=604 * 0.82=495.28 joule.
Compare W
1With W
2Know that its capacity usage ratio has improved 72%.
In addition, the power and the weather of photovoltaic cell output, by dress towards, on-site terrestrial latitude has much relations, under strong periods of direct sunlight and the shade of rainy day, the power of its output can fluctuate between 100%-10%.
Now driving diode with series capacitance is example, and this moment, the voltage at electric capacity two ends was 4.6V, if photovoltaic cell the output voltage of periods of direct sunlight be 6V (100%) greater than 4.6 volts, can charge to electric capacity, but light-emitting diode operate as normal at this moment.
If when overcast and rainy, the voltage up 3V (50%) of photovoltaic cell output, then the voltage at electric capacity two ends is less than 3 volts, light-emitting diodes light cisco unity malfunction.
Adopt the shunt capacitance booster circuit, because the voltage at electric capacity two ends is greater than 0.5 volt, light-emitting diode still can be worked.Therefore, when the cloudy day, the photovoltaic cell output voltage is 3V, even weather is when worse, as long as the voltage of photovoltaic cell output 0.8V still can make light-emitting diode keep work.
At present, the monocrystalline of market sale, polycrystalline standard photovoltaic cell, with diameter is 5 inches circle, takes advantage of 103 millimeters for 103 millimeters, takes advantage of 125 millimeters square in the majority for 125 millimeters, its voltage is 0.5V, and electric current is looked the height of its conversion efficiency, about about 300 milliamperes-500 milliamperes.If operating voltage greater than 0.5V, needs the battery series connection, if electric current greater than 300 milliamperes-500 milliamperes, needs the battery parallel connection, if electric current less than 300 milliamperes-500 milliamperes, needs area is cut in proportion.
Now to drive orchid, green LED is an example, adopts electric capacity directly to drive, and the output voltage of establishing photovoltaic cell is 5V, and 40 milliamperes, then needing photovoltaic cell is cut into electric current is 40 milliamperes 10, and series connection can meet the demands then.Adopt shunt capacitance to boost and drive blue, green light-emitting diode, establishing the photovoltaic cell output voltage is 2.5 volts, and battery is 80 milliamperes, needs this moment 5 photovoltaic cells of cutting to get final product.
Because standard photovoltaic cell power output is directly proportional with area, on the standard photovoltaic cell, the number of times of cutting the more, loss is more greatly.Shu Chu voltage is higher in addition, the piece number of the photovoltaic cell of its series connection the more, the series connection photovoltaic cell needs welding, also needs leave welded gaps at two batteries.This shows, adopt the shunt capacitance booster circuit, compare with the direct driven for emitting lights diode of series capacitance, its processing charges can reduce, and the power of its unit are output increases.
Adopt booster circuit, when the voltage at electric capacity two ends during less than 0.5 volt, can't the driven for emitting lights diode operation, if this moment is X 〉=2, be that the electric capacity number equals or exceeds 2, this moment is by manually or automatically switching to series connection with shunt capacitance, electric capacity both end voltage 〉=1.0V then, but then by booster circuit driven for emitting lights diode operation still.
Claims (2)
1. a solar capacitance type voltage-boosting photo-voltaic power supply comprises photovoltaic cell, it is characterized in that: the anode of photovoltaic cell (1) is through resistance R
1Serial connection diode D
1With capacitor C in parallel
1, C
2, C
X-1, C
xPositive pole joins, photovoltaic cell (1) negative pole and capacitor C
1, C
2, C
X-1, C
xNegative terminal join capacitor C
1, C
2, C
X-1, C
xCross-over connection voltage stabilizing didoe D between the positive and negative two ends
2, diode D
1And capacitor C
1, C
2, C
X-1, C
xBe connected to inductance L on the contact at two ends, the inductance L other end respectively with chip I c
1Input and diode D
3Anode join chip I c
1Output and diode D
3Negative terminal and capacitor C
0Anode joins, chip I c
1Negative terminal and capacitor C
0Negativing ending grounding, chip I c
1Output and ground be connected to by triode T
1, T
2, T
3, resistance R
2, R
3And the circuit that light-emitting diode D forms links to each other.
2. photovoltaic cell according to claim 1 is characterized in that: chip I c
1Output and triode T
3Be connected to a plurality of light-emitting diode D between the collector electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100098443A CN100350715C (en) | 2005-03-23 | 2005-03-23 | Solar capacitance type voltage-boosting photo-voltaic power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100098443A CN100350715C (en) | 2005-03-23 | 2005-03-23 | Solar capacitance type voltage-boosting photo-voltaic power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1838506A true CN1838506A (en) | 2006-09-27 |
| CN100350715C CN100350715C (en) | 2007-11-21 |
Family
ID=37015796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100098443A Expired - Fee Related CN100350715C (en) | 2005-03-23 | 2005-03-23 | Solar capacitance type voltage-boosting photo-voltaic power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350715C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091994A (en) * | 2015-08-12 | 2015-11-25 | 成都易思科科技有限公司 | Liquid weighing sensing system with ultralow power consumption and by adopting solar power supply |
| CN111752330A (en) * | 2020-06-30 | 2020-10-09 | 珠海格力电器股份有限公司 | Photovoltaic maximum power tracking control device and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4494562B2 (en) * | 1999-09-28 | 2010-06-30 | 株式会社ダイヘン | Power converter for photovoltaic power generation |
| CN1540850A (en) * | 2003-10-26 | 2004-10-27 | 刘典军 | DC boosted circuit for solar battery |
| CN1558158A (en) * | 2004-01-01 | 2004-12-29 | 上海奥威科技开发有限公司 | Method and device for saving solar / wind energy |
| CN1316712C (en) * | 2004-01-15 | 2007-05-16 | 中山大学 | Small-sized solar energy integrated photovoltaic electric source |
-
2005
- 2005-03-23 CN CNB2005100098443A patent/CN100350715C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091994A (en) * | 2015-08-12 | 2015-11-25 | 成都易思科科技有限公司 | Liquid weighing sensing system with ultralow power consumption and by adopting solar power supply |
| CN111752330A (en) * | 2020-06-30 | 2020-10-09 | 珠海格力电器股份有限公司 | Photovoltaic maximum power tracking control device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100350715C (en) | 2007-11-21 |
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Granted publication date: 20071121 Termination date: 20110323 |