CN214956911U - Device for improving conversion efficiency of HIT heterojunction solar cell - Google Patents
Device for improving conversion efficiency of HIT heterojunction solar cell Download PDFInfo
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- CN214956911U CN214956911U CN202121149321.XU CN202121149321U CN214956911U CN 214956911 U CN214956911 U CN 214956911U CN 202121149321 U CN202121149321 U CN 202121149321U CN 214956911 U CN214956911 U CN 214956911U
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- solar cell
- heterojunction solar
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 53
- 238000005286 illumination Methods 0.000 claims abstract 3
- 230000005855 radiation Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 4
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses an improve HIT heterojunction solar cell conversion efficiency's device, it includes mounting platform, is used for providing the highlight lighting device of highlight and is used for providing direct current DC power supply unit, mounting platform has the brace table that is used for supporting HIT heterojunction solar cell, the highlight lighting device set up in on the mounting platform and be located directly over the brace table, DC power supply unit set up in on the mounting platform, DC power supply unit's negative pole is by a wire electric connection negative pole contact pin, DC power supply unit's positive pole is by a wire electric connection anodal contact pin. The utility model discloses a device has eliminated bypass resistance and unstable key that hangs through carrying out DC power supply's access and highlight illumination to current HIT heterojunction solar cell, great improvement HIT heterojunction solar cell's conversion efficiency.
Description
Technical Field
The utility model relates to a solar cell conversion efficiency improving device especially relates to an improve HIT heterojunction solar cell conversion efficiency's device.
Background
The energy is the power for the development of human society and economy and is the basis for the social development. In this century, people face major challenges in achieving economic and social sustainable development, and how people can develop sustainably under severe conditions of limited resources and environmental protection has become a global hotspot. All human activities can not leave energy sources, and social development depends on energy sources. The shortage of conventional energy sources such as coal, petroleum and natural gas can support the global development time for a little, and more importantly, the development and utilization of fossil energy bring problems such as land resource destruction, environmental pollution, greenhouse effect and the like, and cause unrecoverable damage to the human living environment. The solar energy is clean, polluted and inexhaustible, can be used freely without transportation, and meets the development requirement of new energy in the future.
At present, the predominant solar cell is still a crystalline silicon solar cell. Although the conversion efficiency of the crystalline silicon solar cell has reached about 25%, the cost is too high because the crystalline silicon solar cell needs to be subjected to a high temperature diffusion process to form a PN junction and also needs many complicated processes to obtain high conversion efficiency. The use of amorphous silicon/monocrystalline silicon heterojunctions is a good choice in order to reduce costs while maintaining high conversion efficiency. The HIT (heterojunction with intrinsic heterojunction) heterojunction solar cell adopts an amorphous silicon film/monocrystalline silicon substrate heterojunction structure, integrates the advantages of monocrystalline silicon and amorphous silicon solar cells, and is an optimal design for fully playing the respective advantages.
The HIT heterojunction solar cell has the advantages of high efficiency and high stability of the crystalline silicon solar cell, and meanwhile, because a high-temperature process does not exist in the preparation process, the energy consumption is low, and the process is relatively simple, the HIT heterojunction solar cell also has the temperature characteristic better than that of a monocrystalline silicon cell, and can also have higher output at high temperature. Therefore, the HIT heterojunction solar cell has attracted attention in recent years as a solar cell having high efficiency and low cost, and has become one of the development directions of the solar cell. The efficiency of the HIT heterojunction solar cell industrialized by the Sanyo company reaches 21 percent at present, and the laboratory efficiency exceeds 23 percent. Companies such as samsung, Weekly (Jusung), etc. have also achieved efficiencies of greater than 21%.
The HIT heterojunction solar cell is of a stacked structure consisting of TCO-P-I-silicon wafer-I-N-TCO layers. In the practice of production, engineers have found that sunlight at hot noon can destroy unstable dangling bonds in the cell structure and recombine them into more stable bonds, thereby reducing defect density and improving the conversion efficiency of HIT heterojunction solar cells. However, the method for improving the conversion efficiency of the HIT heterojunction solar cell has the defects that on one hand, images of the natural environment are collected, and the method is only suitable for hot noons, so that the method has low practical industrialization value and significance and poor practicability; on the other hand, the method for improving the conversion efficiency of the HIT heterojunction solar cell cannot eliminate efficiency loss caused by leakage current rise due to micropore defects in a silicon wafer, for example, in the vapor deposition process of a P-I layer or an I-N layer, a thin film layer has small holes, so that TCO is directly contacted with the silicon wafer, the leakage current is increased, and the conversion efficiency of the cell is reduced (the principle equivalent circuit is that a group of leakage resistors (or bypass resistors) are connected in parallel beside the cell, the leakage resistors generate power consumption, on one hand, the cell is heated to reduce the conversion efficiency, and on the other hand, part of output power is consumed to reduce the conversion efficiency). From the above, the existing HIT heterojunction solar cell structure has the following two defects that the conversion efficiency is reduced: (1) the battery structure generates a bypass resistor due to the film deposition defect and the silicon wafer production defect, and the conversion efficiency of the battery structure is reduced due to the existence of the bypass resistor seriously; (2) the presence of unstable dangling bonds results in a reduction in the conversion efficiency of the cell structure
Therefore, a device for improving the conversion efficiency of the HIT heterojunction solar cell is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device which can improve the conversion efficiency of the HIT heterojunction solar cell; according to the method, the direct-current power supply is connected and the light irradiation is carried out on the conventional HIT heterojunction solar cell, so that the bypass resistance and the unstable dangling bond are eliminated, and the conversion efficiency of the HIT heterojunction solar cell is greatly improved.
In order to achieve the above object, the utility model provides an improve HIT heterojunction solar cell conversion efficiency's device, it includes mounting platform, is used for providing the highlight lighting device of highlight and is used for providing direct current's DC power supply unit, mounting platform has the brace table that is used for supporting HIT heterojunction solar cell, the highlight lighting device set up in on the mounting platform and be located directly over the brace table, DC power supply unit set up in on the mounting platform, DC power supply unit's negative pole is by a wire electric connection negative pole contact pin, DC power supply unit's positive pole is by a wire electric connection anodal contact pin.
Compared with the prior art, when the HIT heterojunction solar cell is used, the conventional HIT heterojunction solar cell is tiled on the support table, the positive contact pin is electrically connected with the positive electrode of the tiled HIT heterojunction solar cell, the negative contact pin is electrically connected with the negative electrode of the tiled HIT heterojunction solar cell, and the direct-current power supply device is started; and simultaneously, the strong light illuminating device positioned right above the supporting table is started, so that strong light of the strong light illuminating device directly irradiates on the HIT heterojunction solar cell which is laid in a tiled mode. Therefore, the utility model discloses a carry out the electrical connection of DC power supply to current HIT heterojunction solar cell, thereby make the bypass resistance that produces because of the silicon chip defect in the HIT heterojunction solar cell generate heat and blow, and then eliminated the defect bypass resistance in the HIT heterojunction solar cell, improved the conversion efficiency of HIT heterojunction solar cell; meanwhile, the conversion efficiency of the HIT heterojunction solar cell is electrified to generate heat and the bypass resistor generates heat to enable the temperature of the whole HIT heterojunction solar cell to be obviously increased, and the HIT heterojunction solar cell is irradiated by intense light matched with the intense light illuminating device, so that unstable dangling bonds in the HIT heterojunction solar cell are recombined into stable chemical bonds, and the conversion efficiency of the HIT heterojunction solar cell is further improved. Therefore, use the utility model discloses a device can the stack of dual nature improve HIT heterojunction solar cell's conversion efficiency, has stronger practicality, is suitable for extensive using widely.
Preferably, the utility model discloses the high-intensity lighting device of the device that improves HIT heterojunction solar cell conversion efficiency is frequency conversion structure; the high-intensity lighting device with the frequency conversion structure can effectively adjust the wavelength of light emitted by the high-intensity lighting device according to the requirement of actual conditions, and further the conversion efficiency of the HIT heterojunction solar cell is improved to achieve optimization.
Preferably, the utility model provides high HIT heterojunction solar cell conversion efficiency's device the strong light lighting device's the cross-section with brace table is parallel, and the light intensity that the two parallel made strong light lighting device's strong light shine on HIT heterojunction solar cell is the same, has ensured the stability and the reliability that improve HIT heterojunction solar cell's conversion efficiency.
Drawings
Fig. 1 is an equivalent circuit diagram of a conventional HIT heterojunction solar cell.
Fig. 2 is a schematic structural diagram of the device for improving the conversion efficiency of the HIT heterojunction solar cell of the present invention.
Figure 3 is an equivalent circuit diagram of a HIT heterojunction solar cell after being processed by the device of the present invention.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout.
As shown in fig. 1, the conventional HIT heterojunction solar cell includes a bypass resistor 10 and a HIT heterojunction solar cell self-resistor 20, the bypass resistor 10 and the HIT heterojunction solar cell self-resistor 20 are connected in parallel, and the bypass resistor 10 generates power consumption due to the formation of a leakage resistor of a leakage effect, so that the HIT heterojunction solar cell generates heat to reduce conversion efficiency, and a part of output power is consumed to reduce conversion efficiency.
With reference to fig. 1-3, the utility model provides high HIT heterojunction solar cell conversion efficiency's device 100, including mounting platform 1, be used for providing the highlight lighting device 2 of highlight and be used for providing direct current DC power supply unit 3, mounting platform has a brace table 11 that is used for supporting HIT heterojunction solar cell 4, lighting device 2 sets up on mounting platform 1 and is located directly over brace table 11, DC power supply unit 3 sets up on mounting platform 1, DC power supply unit 3's negative pole is borrowd by a wire electric connection negative pole contact pin 31, DC power supply unit's positive pole is borrowd by a wire electric connection anodal contact pin 32. When the HIT heterojunction solar cell is used, the conventional HIT heterojunction solar cell 4 is flatly laid on the support table 11, the anode contact pin 32 is electrically connected with the anode of the flatly laid HIT heterojunction solar cell 4, the cathode contact pin 31 is electrically connected with the cathode of the flatly laid HIT heterojunction solar cell 4, and the direct-current power supply device 3 is started; and simultaneously, the strong light illuminating device 2 positioned right above the supporting table 11 is started, so that the strong light of the strong light illuminating device 2 directly irradiates on the HIT heterojunction solar cells 4 which are laid in a flat manner. Therefore, the utility model discloses a carry out DC power supply's electric property intercommunication to current HIT heterojunction solar cell 4 to make in the HIT heterojunction solar cell 4 generate heat and blow because of the produced by-pass resistance of silicon chip defect, and then eliminated defect by-pass resistance 10 in the HIT heterojunction solar cell 4, improved HIT heterojunction solar cell's conversion efficiency, thereby formed as the shown HIT heterojunction solar cell's that has improved conversion efficiency equivalent circuit of fig. 3. Meanwhile, the conversion efficiency of the HIT heterojunction solar cell 4 is electrified to generate heat and the bypass resistor generates heat, so that the temperature of the whole HIT heterojunction solar cell is obviously increased, and the HIT heterojunction solar cell is irradiated by intense light in cooperation with the intense light illuminating device 2, so that unstable suspension bonds in the HIT heterojunction solar cell 4 are recombined to form stable chemical bonds, and the conversion efficiency of the HIT heterojunction solar cell 4 is further improved. Therefore, use the utility model discloses a device can the stack of dual nature improve HIT heterojunction solar cell's conversion efficiency, has stronger practicality, is suitable for extensive using widely.
Preferably, the high-intensity lighting device 2 of the device 100 for improving the conversion efficiency of the HIT heterojunction solar cell of the present invention is of a frequency conversion structure; the high-intensity lighting device 2 with the frequency conversion structure can effectively adjust the wavelength of light emitted by the high-intensity lighting device according to the requirement of actual conditions, and further the conversion efficiency of the HIT heterojunction solar cell is improved to achieve the optimization.
The preferred person, the utility model provides high HIT heterojunction solar cell conversion efficiency's device 100 the cross-section of the strong light illuminating device 2's of device the plane of radiation and supporting bench parallel 11, the two parallel makes the strong light of strong light illuminating device 2 shine on HIT heterojunction solar cell 4 the light intensity the same, has ensured the stability and the reliability that improve HIT heterojunction solar cell 4's conversion efficiency.
It should be noted that the HIT heterojunction solar cell according to the present invention is designed in the prior art, and the defects that cause low conversion rate are also known in the prior art, and the detailed technical description of the structural design and the defects that cause the conversion rate is not provided herein.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (3)
1. The utility model provides an improve HIT heterojunction solar cell conversion efficiency's device, a serial communication port, include mounting platform, be used for providing the highlight lighting device of highlight and be used for providing direct current DC power supply unit, mounting platform has the brace table that is used for supporting HIT heterojunction solar cell, the highlight lighting device set up in on the mounting platform and be located directly over the brace table, DC power supply unit set up in on the mounting platform, DC power supply unit's negative pole is by a wire electric connection negative pole contact pin, DC power supply unit's positive pole is by a wire electric connection anodal contact pin.
2. The device for improving the conversion efficiency of a HIT heterojunction solar cell of claim 1, wherein the intense light illumination device is in a frequency conversion structure.
3. The device for improving the conversion efficiency of the HIT heterojunction solar cell of claim 1, wherein the cross section of the radiation surface of the intense light illumination device is parallel to the support stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149321.XU CN214956911U (en) | 2021-05-26 | 2021-05-26 | Device for improving conversion efficiency of HIT heterojunction solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149321.XU CN214956911U (en) | 2021-05-26 | 2021-05-26 | Device for improving conversion efficiency of HIT heterojunction solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956911U true CN214956911U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121149321.XU Expired - Fee Related CN214956911U (en) | 2021-05-26 | 2021-05-26 | Device for improving conversion efficiency of HIT heterojunction solar cell |
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| Country | Link |
|---|---|
| CN (1) | CN214956911U (en) |
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2021
- 2021-05-26 CN CN202121149321.XU patent/CN214956911U/en not_active Expired - Fee Related
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Granted publication date: 20211130 |