CN104836525A - Solar cell - Google Patents
Solar cell Download PDFInfo
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- CN104836525A CN104836525A CN201510284562.8A CN201510284562A CN104836525A CN 104836525 A CN104836525 A CN 104836525A CN 201510284562 A CN201510284562 A CN 201510284562A CN 104836525 A CN104836525 A CN 104836525A
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- transistor
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- electric capacity
- inductance
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a solar cell which comprises a light collection and conversion module and a non-isolated resonance converter. A resonance circuit with a primary conversion structure is simple and efficient in topology structure, and comprises an input and output circuit, the resonance circuit and a switch tube drive circuit are included; the drive circuit is related to the input and output voltage and thus controls ON and OFF of a switch tube S; and influence caused by fluctuation of the input and output voltage can be effectively inhibited, and the solar cell can be applied to the field of new energy.
Description
[technical field]
The invention belongs to field of conversion of electrical energy, particularly a kind of solar cell using non-isolated controlled resonant converter.
[background technology]
Because transport refrigeration system is as on-board air conditioner, car refrigerator and the power supply overwhelming majority for the refrigerating plant in field are solar cell or new forms of energy battery; And the power supply capacity of the electric power system of solar energy or new forms of energy battery is limited and unstable, is reached by the regulation of electrical circuit to Switching Power Supply and improve equipment use efficiency.
High frequency efficient high power density is the development trend of Switching Power Supply, and controlled resonant converter relies on its Sofe Switch characteristic and good EMI to show, and becomes the focus of new forms of energy transformation of electrical energy technical field research.
Controlled resonant converter common at present, all make based on isolated transformer, can coordinate with reference to shown in figure 1, it is the resonant half-bridge converter utilizing isolated transformer to be formed by connecting, specifically, when secondary Same Name of Ends voltage is timing, the electric capacity C that Transformer Winding is connected by secondary and diode D1 powering load, electric capacity C has the effect of lifting pressure; When secondary Same Name of Ends voltage is for time negative, diode D1 ends, diode D2 conducting, charges now to electric capacity C.Because isolated transformer is made up of two windings, cause the volume of controlled resonant converter comparatively large, loss is higher, haves much room for improvement.
[summary of the invention]
Technical problem to be solved by this invention, be for the defect in aforementioned background art and deficiency, provide a kind of solar cell, its volume is little, and loss is low, and power density is high.
Solar cell in the present invention is converted solar energy into electrical energy by light collection modular converter and inputs in non-isolated controlled resonant converter; Described light collection modular converter comprises: multicrystalline silicon substrate, back electrode, nanotube.
In described multicrystalline silicon substrate, intercrystalline domain boundary place also exists a large amount of unsaturated dangling bonds.
This back electrode is arranged at the lower surface of described multicrystalline silicon substrate, and with the lower surface ohmic contact of this polycrystalline baby substrate.
Described light collection modular converter comprises carbon nano tube structure further, this carbon nano tube structure is arranged at the upper surface of described multicrystalline silicon substrate, and contact with the upper surface of this multicrystalline silicon substrate, described carbon nano tube structure is adsorbed in the upper surface of described multicrystalline silicon substrate under the effect of unsaturated dangling bonds, reduce energy loss, the part dangling bonds at saturated domain boundary place, reduce dangling bonds capturing charge carrier, thus improve the described photoelectric conversion efficiency of light collection modular converter and the mobility of charge carrier.
Described in it, non-isolated controlled resonant converter topological structure is: input power Uin is provided by light collection modular converter, input power Uin connects one end of input capacitance Cin, the different name end of inductance L 1, the Same Name of Ends of inductance L 1 connects one end of electric capacity C, the other end of electric capacity C connects the Same Name of Ends of inductance L 2 and the anode of diode D, the negative electrode of diode D connects one end of output capacitance Cout, and output voltage; The other end of input capacitance Cin, the other end ground connection of output capacitance Cout, the Same Name of Ends of a termination inductance L 1 of switching tube S, the other end is by resistance R8 ground connection.
The drive circuit concrete structure of switching tube S is relevant with input voltage and output voltage, voltage-stabiliser tube, transistor, resistance, electric capacity is coordinated to carry out active matrix driving, concrete structure is: the negative electrode of voltage-stabiliser tube Z1 connects input voltage, one end of anode contact resistance R1, resistance R2, and electric capacity C1 is in parallel with voltage-stabiliser tube Z1; One end of resistance R3 connects input voltage, and the other end connects the emitter of transistor Q2 and the base stage of transistor Q1; The emitter of transistor Q1 connects input voltage, and transistor Q1 base stage is connected to the base stage of its collector electrode and transistor Q2 by electric capacity C2; One end of transistor Q1 collector electrode contact resistance R5, the other end of resistance R5 is connected to the Same Name of Ends of inductance L 1 by resistance R4; Electric capacity C3 is in parallel with resistance R5; The other end of the base stage contact resistance R1 of transistor Q2; Its collector electrode connects the collector electrode of transistor Q3 and the control pole of switching tube S; The other end of base stage contact resistance R2 of transistor Q3, one end of resistance R6; The other end of resistance R6 connects the anode of voltage-stabiliser tube Z2 and one end of resistance R7, and one end of resistance R7 is connected to the other end of switching tube S; The base stage of transistor Q3 is also connected to one end of electric capacity C4 by resistance R9, the other end of electric capacity C4 is connected to one end of switch S, and wherein transistor Q1, Q2 is PNP transistor, and Q3 is NPN transistor.
Compared with prior art, useful effect of the present invention comprises:
The controlled resonant converter that the present invention proposes, the resonant circuit utilizing inductance, electric capacity to form does energy exchange and uses, its topology only uses primary conversion circuit, overcome the deficiency of conventional resonant circuit, circuit topology simplifies, and the relevant thus turn-on and turn-off of control switch pipe S of drive circuit and input voltage, output voltage, input voltage and output voltage can be effectively suppressed to fluctuate the impact brought, and this topology compared with conventional resonance converter under comparable operating conditions switching device power little, efficiency wants high, and cost is lower; The power output of further raising solar cell, reduces costs.
[accompanying drawing explanation]
Fig. 1: the circuit connection diagram of existing resonant half-bridge converter;
Fig. 2: the structural representation of non-isolated controlled resonant converter of the present invention;
Fig. 3: light collection modular converter structural representation of the present invention.
[embodiment]
For making technical scheme of the present invention clearly, below in conjunction with accompanying drawing and specific implementation process, the present invention is described in further detail.
A kind of solar cell provided by the invention, by increasing non-isolated controlled resonant converter to solar panel, thus increases the effect of power output.
As shown in Figure 2, non-isolated controlled resonant converter of the present invention comprises input voltage U
in, inductance L 1, electric capacity C, inductance L 2 and switching tube S and drive circuit thereof form, inductance L 1, inductance L 2 are coupled mode inductance.
2 structure of the present invention is elaborated by reference to the accompanying drawings, concrete annexation is: input power Uin connects one end of input capacitance Cin, the different name end of inductance L 1, the Same Name of Ends of inductance L 1 connects one end of electric capacity C, the other end of electric capacity C connects the Same Name of Ends of inductance L 2 and the anode of diode D, the negative electrode of diode D connects one end of output capacitance Cout, and output voltage; The other end of input capacitance Cin, the other end ground connection of output capacitance Cout, the Same Name of Ends of a termination inductance L 1 of switching tube S, the other end is by resistance R8 ground connection.
The drive circuit concrete structure of switching tube S is relevant with input voltage and output voltage, voltage-stabiliser tube, transistor, resistance, electric capacity is coordinated to carry out active matrix driving, concrete structure is: the negative electrode of voltage-stabiliser tube Z1 connects input voltage, one end of anode contact resistance R1, resistance R2, and electric capacity C1 is in parallel with voltage-stabiliser tube Z1; One end of resistance R3 connects input voltage, and the other end connects the emitter of transistor Q2 and the base stage of transistor Q1; The emitter of transistor Q1 connects input voltage, and transistor Q1 base stage is connected to the base stage of its collector electrode and transistor Q2 by electric capacity C2; One end of transistor Q1 collector electrode contact resistance R5, the other end of resistance R5 is connected to the Same Name of Ends of inductance L 1 by resistance R4; Electric capacity C3 is in parallel with resistance R5; The other end of the base stage contact resistance R1 of transistor Q2; Its collector electrode connects the collector electrode of transistor Q3 and the control pole of switching tube S; The other end of base stage contact resistance R2 of transistor Q3, one end of resistance R6; The other end of resistance R6 connects the anode of voltage-stabiliser tube Z2 and one end of resistance R7, and one end of resistance R7 is connected to the other end of switching tube S; The base stage of transistor Q3 is also connected to one end of electric capacity C4 by resistance R9, the other end of electric capacity C4 is connected to one end of switch S, and wherein transistor Q1, Q2 is PNP transistor, and Q3 is NPN transistor.By above-mentioned drive circuit, by the turn-on and turn-off of transistor Q1, Q2, Q3 and peripheral circuit control switch pipe S thereof, when switch S conducting time, inductance L 1 energy storage, electric capacity C and inductance L 2 release energy, when switch S turns off time, inductance L 1, electric capacity C, inductance L 2 form resonant circuit, when the resonance current flowing through diode D becomes 0, the conducting again of control switch pipe, forms periodic turn-on and turn-off.
Switching tube S is MOSFET or IGBT constant power semiconductor device.
Input power is storage battery, fuel cell or photovoltaic cell etc.
This resonant circuit adopts one-stage transfor-mation structure, and circuit topological structure is simply efficient; And the relevant thus turn-on and turn-off of control switch pipe S of drive circuit and input voltage, output voltage, can effectively suppress input voltage and output voltage to fluctuate the impact brought.
As shown in Figure 3, described light collection modular converter comprises at least electrode 1 further, and the material of this electrode 1 is the electric conducting materials such as silver, gold or carbon nano-tube.Shape and the thickness of described electrode 1 are not limit, and can be arranged at upper surface 21 or the lower surface 22 of described carbon nano tube structure 2, and with the upper surface 21 of carbon nano tube structure 2 or lower surface 22 electrical contact.The setting of described electrode 1 can be used for collecting the electric current flow through in described carbon nano tube structure 2, and is connected with boost module.
The material of described back electrode 3 can be the metals such as aluminium, magnesium or silver.Shape and the thickness of described back electrode 3 are not limit.
Described multicrystalline silicon substrate 4 is p-type polysilicon chip.Described multicrystalline silicon substrate 4 and described carbon nano tube structure 2 form heterojunction structure, thus to realize in described solar cell luminous energy to the conversion of electric energy.
Described carbon nano tube structure 2 is a layer structure, comprises multiple equally distributed carbon nano-tube.This carbon nano tube structure has the good power that absorbs solar energy, and plays the double action of photoelectric conversion material and top electrode in described light collection modular converter.This carbon nano tube structure comprises disordered carbon nanotube layer or organized carbon nano tube layer.
Described disordered carbon nanotube layer comprises the carbon nano-tube of multiple lack of alignment.This carbon nano-tube is mutually wound around or isotropism in disordered carbon nanotube layer.
Described organized carbon nano tube layer comprises the carbon nano-tube of multiple ordered arrangement, and this carbon nano-tube is arranged of preferred orient along fixed-direction.Described multiple carbon nano-tube are parallel to the surface alignment of described organized carbon nano tube layer in this organized carbon nano tube layer, and are arranged of preferred orient in the same direction or along multiple directions.
Carbon nano-tube in described carbon nano tube structure 2 is Single Walled Carbon Nanotube, double-walled carbon nano-tube or multi-walled carbon nano-tubes.Wherein, multi-walled carbon nano-tubes is metalline, and Single Walled Carbon Nanotube is divided into semiconductor and two kinds, metal according to its chirality is different with diameter, and the attribute of double-walled carbon nano-tube is metalline.Because the carbon nano-tube in described carbon nano tube structure 2 is very pure, and due to the specific area of carbon nano-tube itself very large, so this carbon nano tube structure 2 itself has stronger viscosity.This carbon nano tube structure 2 can utilize the viscosity of itself to be directly fixed on the surface of described multicrystalline silicon substrate 4.
Described light collection modular converter is when applying, solar irradiation is mapped to described carbon nano tube structure 2, after incident photon is absorbed by described carbon nano tube structure 2, the contact-making surface of described multicrystalline silicon substrate 4 and carbon nano tube structure 2 produces a large amount of excitons, i.e. electronics and hole pair.These excitons will be separated into two kinds of free carriers, and wherein free hole charge carrier is transmitted to back electrode 3 by described multicrystalline silicon substrate 4, and is collected by described back electrode 3.Free electron charge carrier is by the transmission of described carbon nano tube structure, collection.Further, again collected by described at least one electrode 1 by the electric current collected by carbon nano tube structure 2, such booster circuit just has electric current to pass through.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a solar cell, is characterized in that: comprise light collection modular converter and non-isolated controlled resonant converter;
Described light collection modular converter comprises:
Multicrystalline silicon substrate, in described multicrystalline silicon substrate, intercrystalline domain boundary place also exists a large amount of unsaturated dangling bonds;
Back electrode, this back electrode is arranged at the lower surface of described polycrystalline baby substrate, and with the lower surface ohmic contact of this polycrystalline baby substrate;
Described light collection modular converter comprises carbon nano tube structure further, this carbon nano tube structure is arranged at the upper surface of described multicrystalline silicon substrate, and contact with the upper surface of this multicrystalline silicon substrate, described carbon nano tube structure is adsorbed in the upper surface of described multicrystalline silicon substrate under the effect of unsaturated dangling bonds, reduce energy loss, the part dangling bonds at saturated domain boundary place, reduce dangling bonds capturing charge carrier, thus improve the described photoelectric conversion efficiency of light collection modular converter and the mobility of charge carrier;
Described non-isolated controlled resonant converter provides input voltage Uin by light collection modular converter;
Described non-isolated controlled resonant converter, it is characterized in that: input power Uin connects one end of input capacitance Cin, the different name end of inductance L 1, the Same Name of Ends of inductance L 1 connects one end of electric capacity C, the other end of electric capacity C connects the Same Name of Ends of inductance L 2 and the anode of diode D, the negative electrode of diode D connects one end of output capacitance Cout, and output voltage; The other end of input capacitance Cin, the other end ground connection of output capacitance Cout, the Same Name of Ends of a termination inductance L 1 of switching tube S, the other end is by resistance R8 ground connection; The drive circuit of switching tube S is relevant with input voltage and output voltage, voltage-stabiliser tube, transistor, resistance, electric capacity is coordinated to carry out active matrix driving, concrete structure is: the negative electrode of voltage-stabiliser tube Z1 connects input voltage, one end of anode contact resistance R1, resistance R2, and electric capacity C1 is in parallel with voltage-stabiliser tube Z1; One end of resistance R3 connects input voltage, and the other end connects the emitter of transistor Q2 and the base stage of transistor Q1; The emitter of transistor Q1 connects input voltage, and transistor Q1 base stage is connected to the base stage of its collector electrode and transistor Q2 by electric capacity C2; One end of transistor Q1 collector electrode contact resistance R5, the other end of resistance R5 is connected to the Same Name of Ends of inductance L 1 by resistance R4; Electric capacity C3 is in parallel with resistance R5; The other end of the base stage contact resistance R1 of transistor Q2; Its collector electrode connects the collector electrode of transistor Q3 and the control pole of switching tube S; The other end of base stage contact resistance R2 of transistor Q3, one end of resistance R6; The other end of resistance R6 connects the anode of voltage-stabiliser tube Z2 and one end of resistance R7, and one end of resistance R7 is connected to the other end of switching tube S; The base stage of transistor Q3 is also connected to one end of electric capacity C4 by resistance R9, the other end of electric capacity C4 is connected to one end of switching tube S.
2. solar cell according to claim 1, is characterized in that: described inductance L 1, inductance L 2 are coupled mode inductance.
3. solar cell according to claim 1, is characterized in that: described switching tube S is IGBT or MOSFET.
4. solar cell according to claim 1, is characterized in that: described transistor Q1, Q2 are PNP transistor, and Q3 is NPN transistor.
Priority Applications (1)
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CN201510284562.8A CN104836525A (en) | 2014-12-13 | 2015-05-27 | Solar cell |
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CN2014108061639 | 2014-12-13 | ||
CN201410806163 | 2014-12-13 | ||
CN201510284562.8A CN104836525A (en) | 2014-12-13 | 2015-05-27 | Solar cell |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552297A (en) * | 2008-04-03 | 2009-10-07 | 清华大学 | Solar cell |
CN101820012A (en) * | 2010-04-09 | 2010-09-01 | 上海交通大学 | Silicon solar cell with surface assembled with carbon nano tube |
US20120211063A1 (en) * | 2009-03-17 | 2012-08-23 | Jong-Jan Lee | Back Contact Solar Cell with Organic Semiconductor Heterojunctions |
CN103856050A (en) * | 2012-12-04 | 2014-06-11 | 欧司朗股份有限公司 | Converter circuit |
WO2014127002A1 (en) * | 2013-02-14 | 2014-08-21 | Northeastern University | Solar cells containing metal oxides |
-
2015
- 2015-05-27 CN CN201510284562.8A patent/CN104836525A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101552297A (en) * | 2008-04-03 | 2009-10-07 | 清华大学 | Solar cell |
US20120211063A1 (en) * | 2009-03-17 | 2012-08-23 | Jong-Jan Lee | Back Contact Solar Cell with Organic Semiconductor Heterojunctions |
CN101820012A (en) * | 2010-04-09 | 2010-09-01 | 上海交通大学 | Silicon solar cell with surface assembled with carbon nano tube |
CN103856050A (en) * | 2012-12-04 | 2014-06-11 | 欧司朗股份有限公司 | Converter circuit |
WO2014127002A1 (en) * | 2013-02-14 | 2014-08-21 | Northeastern University | Solar cells containing metal oxides |
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