CN202018969U - Solar cell simultaneously performing photoelectric conversion and thermoelectric conversion - Google Patents
Solar cell simultaneously performing photoelectric conversion and thermoelectric conversion Download PDFInfo
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- CN202018969U CN202018969U CN2010206818105U CN201020681810U CN202018969U CN 202018969 U CN202018969 U CN 202018969U CN 2010206818105 U CN2010206818105 U CN 2010206818105U CN 201020681810 U CN201020681810 U CN 201020681810U CN 202018969 U CN202018969 U CN 202018969U
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- photoelectric conversion
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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
Abstract
The utility model relates to a solar cell simultaneously performing photoelectric conversion and thermoelectric conversion, which belongs to the technical field of solar photovoltaic electricity generation and temperature-difference electricity generation. The solar cell simultaneously performing the photoelectric conversion and the thermoelectric conversion comprises a photoelectric conversion cell, a thermoelectric conversion cell and heat-radiating fins; the photoelectric conversion cell is adhered at a hot end of the thermoelectric conversion cell; and the heat-radiating fins are adhered at a cold end of the thermoelectric conversion cell. By using the solar cell, the working waste heat in the photoelectric conversion cell is continually absorbed by using the thermoelectric conversion cell and the heat-radiating fins while the photoelectric conversion is performed by using solar energy; not only is the working temperature of the photoelectric conversion cell is decreased, but also the photoelectric conversion efficiency of the photoelectric conversion cell is improved; and therefore, the solar cell provided by the utility model has higher conversion efficiency.
Description
Technical field
The utility model relates to a kind of solar cell that carries out opto-electronic conversion and thermoelectric conversion simultaneously, belongs to solar energy power generating and thermo-electric generation technical field.
Background technology
Solar energy is premier regenerative resource, and solar energy power generating is a kind of important form that solar energy utilizes.Solar energy power generating utilizes solar cell that solar energy directly is converted to electric energy, have transform link few, can the source quality height, the construction period is short and generation mode near advantages such as zero discharges.
Solar photovoltaic technology also has the following disadvantages in actual applications:
(1) at present the photoelectric conversion efficiency of solar cell has just been utilized a part very little in the solar energy between 15-20%, and most of solar energy is not fully utilized.
(2) solar cell is in running, and unemployed solar radiant energy is except sub-fraction is reflected, and all the other major parts are absorbed by battery and are converted into heat energy.If the heat of these absorptions can not in time be got rid of, the solar cell temperature will raise gradually and reduce generating efficiency, and 1 ℃ of power of the every rising of solar cell temperature reduces 0.35% approximately according to statistics.In addition, solar cell is at high temperature worked for a long time and also can be worn out reduction of service life because of rapid.
Summary of the invention
The purpose of this utility model is to propose a kind of solar cell that carries out opto-electronic conversion and thermoelectric conversion simultaneously, overcoming the low shortcoming of above-mentioned prior art solar energy utilization ratio, and can reduce the solar cell working temperature, further improves photoelectric conversion efficiency.
Carry out the solar cell of opto-electronic conversion and thermoelectric conversion when the utility model proposes, comprise opto-electronic conversion battery, thermoelectrical conversion battery and fin; Described opto-electronic conversion battery is bonded in the hot junction of thermoelectrical conversion battery; Described fin is bonded in the cold junction of thermoelectrical conversion battery; Described opto-electronic conversion battery is made up of top electrode, antireflective coating, diffusion layer, matrix and bottom electrode, and antireflective coating, diffusion layer, matrix and bottom electrode are overlapped successively, and top electrode is fixed in the antireflective coating; Described thermoelectrical conversion battery is made of thermoelectric couple many, every pair of thermoelectric couple comprises a N type semiconductor electrode and a P type semiconductor electrode, one end of P type semiconductor electrode and N type semiconductor electrode is welded on respectively on the metal electrode, the other end of P type semiconductor electrode and N type semiconductor electrode is welded on respectively on two other metal electrode, many thermoelectric couple is interconnected by metal electrode after, clamping with heat conductive isolation sheet at upper and lower faces becomes thermoelectrical conversion battery after bonding.
Carry out the solar cell of opto-electronic conversion and thermoelectric conversion when the utility model proposes, when utilizing solar energy to carry out opto-electronic conversion, utilize the work used heat in the continuous absorbing light Electroconversion cell of thermoelectrical conversion battery and fin, promptly reduced the working temperature of opto-electronic conversion battery, improved the photoelectric conversion efficiency of opto-electronic conversion battery again, therefore the solar cell that the utility model proposes has high conversion rate.
Description of drawings
Fig. 1 is the structural representation of the solar cell that the utility model proposes.
Among Fig. 1, the 1st, matrix, the 2nd, diffusion layer, the 3rd, top electrode, the 4th, antireflective coating, the 5th, bottom electrode, the 6th, N type semiconductor electrode, the 7th, P type semiconductor electrode, the 8th, metal electrode film, the 9th, heat conductive isolation sheet, the 10th, fin.
Embodiment
Carry out the solar cell of opto-electronic conversion and thermoelectric conversion when the utility model proposes, its structural representation comprises opto-electronic conversion battery, thermoelectrical conversion battery and fin 10 as shown in Figure 1.The opto-electronic conversion battery is bonded in the hot junction of thermoelectrical conversion battery, and fin is bonded in the cold junction of thermoelectrical conversion battery.As shown in Figure 1, the opto-electronic conversion battery is made up of top electrode 3, antireflective coating 4, diffusion layer 2, matrix 1 and bottom electrode 5, and antireflective coating 4, diffusion layer 2, matrix 1 and bottom electrode 5 are overlapped successively, and top electrode 3 is fixed in the antireflective coating 4.Thermoelectrical conversion battery is made of thermoelectric couple many, every pair of thermoelectric couple comprises a N type semiconductor electrode 6 and a P type semiconductor electrode 7, one end of P type semiconductor electrode 7 and N type semiconductor electrode 6 is welded on respectively on the metal electrode film 8, the other end of P type semiconductor electrode and N type semiconductor electrode is welded on respectively on two other metal electrode film 8, many thermoelectric couple is interconnected by metal electrode film 8 after, clamping with heat conductive isolation sheet 9 at upper and lower faces becomes thermoelectrical conversion battery after bonding.
In the solar cell of the present utility model, diffusion layer (n layer) is made with high temperature doping method of diffusion at matrix surface, forms p-n junction in two-layer boundary; Top electrode is the photovoltaic generation negative electrode that forms behind diffusion layer (n layer) surface metalation, and bottom electrode is the photovoltaic generation positive electrode that forms at p layer matrix back face metalization; Antireflective coating 4 is to be deposited on the lip-deep one deck silicon nitride film of diffusion layer (n layer), is used to reduce sunlight reflected.P layer matrix, n diffusion layer by layer, antireflective coating 4, top electrode 3 and bottom electrode 5 constitute the opto-electronic conversion batteries.Heat conductive isolation sheet 9 is bonded in the p layer matrix back side, be bonded with metal electrode film on the heat conductive isolation sheet, N type semiconductor electrode and P type semiconductor electrode are welded on a pair of thermoelectric couple of formation on the metal electrode film, with some to thermoelectric couple with metal electrode film welding series connection, clamp with heat conductive isolation sheet then and just constitute thermoelectrical conversion battery after bonding; Described fin closely bonds on the heat conductive isolation sheet of thermoelectrical conversion battery.
The solar cell that the utility model proposes, under solar light irradiation, the photon with enough energy enters the p-n junction district, and electronics is excited from covalent bond, produces electron-hole pair.Under the p-n junction effect of electric field, electronics is to the motion of the n district of positively charged, and the hole produces an outside photovoltaic power generation voltage to the motion of electronegative p district between p district and n district; Because less than the not reaction of infrared light greater than 1.1 μ m of the ultraviolet light of 0.35 μ m and wavelength, so its photoelectric conversion efficiency has only 15%～20% to silicon solar cell (opto-electronic conversion battery) for wavelength.Except that sub-fraction (10%) is reflected, remaining solar radiation energy is changed into heat, the silicon solar cell temperature is raise, two ends up and down at thermoelectrical conversion battery form the temperature difference, thermoelectrical conversion battery directly becomes electric energy with a part of thermal power transfer, produce photo-thermal power generation voltage at N type semiconductor electrode and P type semiconductor electrode two ends, remainder heat energy then is delivered on the fin, by means of thermal radiation and free convection mode heat is distributed, make thermoelectrical conversion battery cold junction (lower end) keep lower temperature, also reduced the working temperature of silicon solar cell simultaneously.
Among the embodiment of the present utility model, p layer matrix 1 is the monocrystalline silicon piece of thickness 0.3mm, adopts thermal diffusion method to form the n diffusion layer 2 of the about 0.5 μ m of the degree of depth on p layer matrix 1, forms p-n junction at the interface; Adopt vacuum vapour deposition to make top electrode 3 and bottom electrode 5 on n layer 2 surface and p layer matrix 1 back side; At n layer 2 surperficial evaporation layer of silicon dioxide film, form antireflective coating 4.Described p layer matrix 1, n layer 2, antireflective coating 4, top electrode 3 and bottom electrode 5 constitute silicon solar opto-electronic conversion battery.
Described heat conductive isolation sheet 9 is bonded in p layer matrix 1 back side, be bonded with metal electrode film 8 on the heat conductive isolation sheet, N type semiconductor electrode 6 and P type semiconductor electrode 7 are welded on a pair of thermoelectric couple of formation on the metal electrode film 8, with some to thermoelectric couple with metal electrode film 8 welding series connection, and then just constitute thermoelectrical conversion battery after bonding with 9 clampings of a slice heat conductive isolation sheet; Described fin 10 closely bonds on the metal electrode film 8 of thermoelectrical conversion battery.
Described N type semiconductor electrode 6 and P type semiconductor electrode 7 all use bismuth telluride (Bi
2Te
3) basic solid solution alloy material, heat conductive isolation sheet 9 adopts alumina ceramic plates, and metal electrode film 8 uses copper products, fin 10 to use aluminium alloy extrusions.
The operation principle of solar cell of the present utility model is:
Under solar light irradiation, the photon of enough energy enters the p-n junction district, produces voltage between the top electrode 3 of silicon solar opto-electronic conversion battery and bottom electrode 5; Except that the sub-fraction solar radiation energy was reflected, remaining solar radiation energy was changed into heat, and the silicon solar cell temperature is raise, and formed the temperature difference at the two ends up and down of thermoelectrical conversion battery; Thermoelectrical conversion battery directly becomes electric energy with a part of thermal power transfer, produces photo-thermal power generation voltage at N type semiconductor electrode 6 and P type semiconductor electrode 7 two ends, and remainder heat energy then is delivered on the fin 10; Fin 10 distributes heat by means of thermal radiation and free convection mode, makes the cold junction of thermoelectrical conversion battery keep lower temperature, has also reduced the working temperature of opto-electronic conversion battery simultaneously.
In sum, the utility model is innovated solar cell in design, it is a kind of solar cell that utilizes luminous effect and thermoelectric effect simultaneously, because thermoelectrical conversion battery and fin be the work used heat in the extinction Electroconversion cell constantly, reduced the working temperature of opto-electronic conversion battery, can further improve its photoelectric conversion efficiency, therefore the solar cell that the utility model proposes has the higher solar energy conversion efficiency.
Claims (1)
1. a solar cell that carries out opto-electronic conversion and thermoelectric conversion simultaneously is characterized in that solar cell comprises opto-electronic conversion battery, thermoelectrical conversion battery and fin; Described opto-electronic conversion battery is bonded in the hot junction of thermoelectrical conversion battery; Described fin is bonded in the cold junction of thermoelectrical conversion battery; Described opto-electronic conversion battery is made up of top electrode, antireflective coating, diffusion layer, matrix and bottom electrode, and antireflective coating, diffusion layer, matrix and bottom electrode are overlapped successively, and top electrode is fixed in the antireflective coating; Described thermoelectrical conversion battery is made of thermoelectric couple many, every pair of thermoelectric couple comprises a N type semiconductor electrode and a P type semiconductor electrode, one end of P type semiconductor electrode and N type semiconductor electrode is welded on respectively on the metal electrode, the other end of P type semiconductor electrode and N type semiconductor electrode is welded on respectively on two other metal electrode, many thermoelectric couple is interconnected by metal electrode after, clamping with heat conductive isolation sheet at upper and lower faces becomes thermoelectrical conversion battery after bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206818105U CN202018969U (en) | 2010-12-25 | 2010-12-25 | Solar cell simultaneously performing photoelectric conversion and thermoelectric conversion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206818105U CN202018969U (en) | 2010-12-25 | 2010-12-25 | Solar cell simultaneously performing photoelectric conversion and thermoelectric conversion |
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| Publication Number | Publication Date |
|---|---|
| CN202018969U true CN202018969U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206818105U Expired - Lifetime CN202018969U (en) | 2010-12-25 | 2010-12-25 | Solar cell simultaneously performing photoelectric conversion and thermoelectric conversion |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130106A (en) * | 2010-12-25 | 2011-07-20 | 紫光股份有限公司 | Solar cell capable of simultaneously performing photoelectric conversion and thermoelectric conversion |
| CN103983030A (en) * | 2014-05-30 | 2014-08-13 | 西安交通大学 | Solar co-generation tube |
| CN105141220A (en) * | 2015-08-25 | 2015-12-09 | 河海大学常州校区 | Novel solar apparatus capable of improving comprehensive efficiency of photovoltaic modules |
| CN106412017A (en) * | 2016-08-31 | 2017-02-15 | 重庆伟睿科技有限公司 | Adjacent pushing system |
| CN106992351A (en) * | 2015-12-14 | 2017-07-28 | 福特全球技术公司 | Vehicle antenna assembly with cooling |
| CN107403851A (en) * | 2017-05-09 | 2017-11-28 | 杭州熵能热导科技有限公司 | A kind of novel photovoltaic thermo-electric generation integrated chip and its manufacture method |
| JP2018174657A (en) * | 2017-03-31 | 2018-11-08 | 国立大学法人横浜国立大学 | Energy conversion device and manufacturing method of the same |
| WO2021003762A1 (en) * | 2019-07-09 | 2021-01-14 | 山东光韵智能科技有限公司 | High-ultraviolet high-energy solar cell panel for open field and manufacturing method therefor |
-
2010
- 2010-12-25 CN CN2010206818105U patent/CN202018969U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130106A (en) * | 2010-12-25 | 2011-07-20 | 紫光股份有限公司 | Solar cell capable of simultaneously performing photoelectric conversion and thermoelectric conversion |
| CN103983030A (en) * | 2014-05-30 | 2014-08-13 | 西安交通大学 | Solar co-generation tube |
| CN105141220A (en) * | 2015-08-25 | 2015-12-09 | 河海大学常州校区 | Novel solar apparatus capable of improving comprehensive efficiency of photovoltaic modules |
| CN106992351A (en) * | 2015-12-14 | 2017-07-28 | 福特全球技术公司 | Vehicle antenna assembly with cooling |
| CN106992351B (en) * | 2015-12-14 | 2021-11-16 | 福特全球技术公司 | Vehicle antenna assembly with cooling |
| CN106412017A (en) * | 2016-08-31 | 2017-02-15 | 重庆伟睿科技有限公司 | Adjacent pushing system |
| JP2018174657A (en) * | 2017-03-31 | 2018-11-08 | 国立大学法人横浜国立大学 | Energy conversion device and manufacturing method of the same |
| CN107403851A (en) * | 2017-05-09 | 2017-11-28 | 杭州熵能热导科技有限公司 | A kind of novel photovoltaic thermo-electric generation integrated chip and its manufacture method |
| WO2021003762A1 (en) * | 2019-07-09 | 2021-01-14 | 山东光韵智能科技有限公司 | High-ultraviolet high-energy solar cell panel for open field and manufacturing method therefor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |