Foreword: In the middle of June, a closed-door meeting organized by authoritative PV media was held in Intercontinental Hotel, Kunming, Yunnan. Many PV module manufacturers attended the meeting discussed the development trend of n-type TOPCon modules and the quality of PV systems. This article is a summary of some important viewpoints of the closed-door meeting compiled by the editor.
N-type TOPCon battery technology has been recognized by the market, and the development trend is good
. As we all know , the only theme of the photovoltaic industry is to reduce costs and increase efficiency. N-type batteries are gradually on the stage because of their high conversion efficiency. The world record of TOPCon cell efficiency created by Zhonglai Light Energy has reached 26. The capacity share of n-type cells represented by TOPCon, HJT and XBC has increased rapidly. According to the authoritative platform data, the total capacity of cells will reach about 1047 GW in 2023, an increase of 46.51% over the same period last year. The new capacity is mainly n-type, and by the end of 2023, the capacity of n-type batteries will reach 550GW, accounting for 52.
With a large number of shipments of n-type TOPCon components, the quality problems of component systems have gradually emerged
. According to PVinfolink statistics, the proportion of n-type product shipments this year will fall between 25-30%, compared with 9% in 2022. A component head enterprise has proposed that many component manufacturers have chosen the product route of double-sided double-glass, and more and more products have been shipped. In order to pursue larger power components, they are getting bigger and bigger, which naturally increases the cost of transportation and installation manpower. As a result, they now find that the problems of cracking and bursting of double-sided double-glass module batteries are gradually increasing, and the safety of the module system is questioned.
1. If the photovoltaic power plant is in some harsh environments, such as mountains, offshore waters, saline-alkali land, polluted land, wasteland, high-rise roofs, car sheds, agricultural land, etc., or specific projects involving extremely high labor and logistics costs, the cost savings brought by weight reduction will be doubled or even higher. The
weight is reduced, and the application scenarios will no longer be limited by the weight of components. For roof bearing, especially some traditional roofs such as adobe houses and tile-roofed houses in rural areas, the bearing capacity of such roofs is poor, at this time, the weight of components is particularly important, and lightweight components with transparent grid backboards are more suitable.
2. The high
gain of double-sided single-glass power generation can be seen from the empirical comparative data of single-glass double-sided modules and double-glass double-sided modules conducted by CPVT of the National Photovoltaic Quality Inspection Center in Yinchuan Project Base, Ningxia. The average power generation of double-sided single-glass modules with transparent grid backplane of Zhonglai New Material is 1.29% higher than that of double-sided double-glass modules (as of the latest data of 6.29 days, the power generation gain of transparent backplane modules is as high as 2. This means that if the life cycle of photovoltaic power plants is calculated in 30 years, the double-sided single-glass modules with transparent grid backplane are used. Every 1GW will be 1.3.2 more
than double-sided double-glass modules.
) Transparent grid backplane
with high water resistance Because most photovoltaic modules are packaged with EVA, acetic acid produced by EVA hydrolysis is inevitable in high temperature and humidity environment. Zhonglai New Material uses the latest "Haobengzi 2.
kWh Analytics, a clean energy insurance provider, mentioned in its fifth annual solar risk assessment report. "The choice is clear: when your report also States that, based on the testing and modeling of the RETC study, The impact resistance of PV modules with 3.2mm front tempered glass installed on the polymer backplane is about 2. In addition, according to the relevant analysis, with the popularity of double-sided modules, the market share of double-sided modules is steadily increasing. Double glass assemblies are more than twice as likely to break compared to glass/backplane assemblies. The above is a summary of the important contents of this closed-door meeting.
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