New technology empowers the photovoltaic industry! Photoelectric conversion efficiency has reached new highs, and laminated battery technology is expected to become a new track for competition.
Release time:
2023-08-15
(CCTV Finance "punctually") the 16th International Solar Photovoltaic and Smart Energy Conference is being held in Shanghai. As the largest photovoltaic exhibition in the world, this exhibition has attracted more than 3100 domestic and foreign enterprises to participate in the exhibition.
(CCTV Finance "punctual Finance") the 16th International Solar Photovoltaic and Smart Energy Conference is being held in Shanghai. As the largest photovoltaic exhibition in the world, this exhibition has attracted more than 3100 domestic and foreign enterprises to participate in the exhibition. Let's take a look at the latest and most cutting-edge photovoltaic technology at this year's exhibition.
CCTV reporter Liu Zhongmeng: The so-called photovoltaic power generation is a technology that converts solar energy into electrical energy. When sunlight shines on this module, the small grid between square inches has to do to convert solar energy into electricity. What enterprises need to do is to improve the photoelectric conversion efficiency. The higher the efficiency, the more electricity will be generated. About 15 years ago, the efficiency of photoelectric conversion was only about 15%, at present, the products of some enterprises can reach 23%, even to 30%.
The front power of this solar photovoltaic module in the picture has exceeded 730W, which is the third time this year to create a new record for heterojunction cell power. In recent years, the photoelectric conversion efficiency of domestic photovoltaic enterprises has reached new highs.
Liu Hanyuan, Chairman of the Board of Directors of Tongwei Group: The application of new technologies and the creation and application of new processes have reduced the system cost of our power generation and the production cost per unit of electricity. Only when their costs are reduced to competitiveness, our energy The transformation can be realized as soon as possible under the drive of effective economic power.
As the third-generation solar cell, perovskite is also another focus of this exhibition. The glass in front of us is the perovskite cell. Simply put, a layer of perovskite crystal is coated on the photovoltaic glass. Compared with crystalline silicon cells, there are many fewer production links, lower cost and more environmentally friendly.
Yao Jizhong, co-founder of Hangzhou Xianna Optoelectronic Technology Co., Ltd.: In the actual laboratory, the photoelectric conversion efficiency can already be close to 26% at present. In the pilot line of mass production, it can already be close to 22% and 21.8. Our products have been used on the roofs of industry and commerce and on the roofs of ground power stations, and grid-connected power generation has been realized.
According to industry insiders, generally speaking, the limit value of the photoelectric conversion efficiency of crystalline silicon cells is about 29%, and the current conversion efficiency of perovskite is about 20%, and the combination of the two makes the conversion efficiency move to a higher level. Laminated battery technology is expected to become a new track of competition in the future.
Li Zhenguo, President of Longji Green Energy Technology Co., Ltd.: We think the next generation technology is a double-junction laminated battery, because theoretically it can achieve 41% conversion efficiency. Of course, there is a great difficulty in the middle.
Ren Yidong, Chairman of Jiangsu Zhongqing Guotou Industrial Development Group: Through perovskite superposition P-type, superposition N-type batteries to seek new component packaging technology, the conversion efficiency is getting higher and higher, at the same time, our cost must be optimized, our competitiveness will come out.
CCTV Finance
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