Domestic PV module quality worrying policy formulation needs to be followed up
A project with more than 1000 pieces of components, nearly five hundred unqualified. Qin Haiyan, director of the Beijing authentication center, believes that the quality problems of photovoltaic power stations in China are still outstanding.
Photovoltaic manufacturing industry in China has risen rapidly in recent years. Behind the booming PV industry, component quality and service life have become an urgent problem for the entire industry.
The quality of the component is worrying
Photovoltaic industry chain is mainly silicon materials, silicon wafers, batteries, components, systems and grid connected. In the whole PV industry chain, components and batteries are low due to low technical threshold, short investment and short construction period. In recent years, photovoltaic modules manufacturers are springing up.
Under the acceleration of the integration process of the photovoltaic industry, according to incomplete statistics, there are about 400 photovoltaic components production companies in the industry. The quality of each component manufacturers are uneven, price is also far, some components in the field of practical application, the use of a few years appeared in components conversion efficiency decrease, discoloration, damage and EVA backplane backplane, yellow bubble, hot spot effect, there are problems such as loss of junction box.
There is a fact that the efficiency of component conversion is not high at present in the industry. Wang Ye, the technical director of the Cgn Solar Energy Development Co, confirmed. Electricity company cnpec has more than 300 MW, in the application process, we found that many components in 3, with 5 years after conversion efficiency began to decay rapidly, even 10% attenuation or back cracking and other serious problems.
There is not only the problem of the quality of components in the three or four - stream enterprises in the industry, but also the phenomenon that the key enterprises do not have the quality of the components. Wang Bohua, Secretary General of China photovoltaic industry alliance, held in mid November on the 2013 PV leaders summit. For example, a user contacted the products produced by Dachang. In the products he used, the power of PV modules was about 4% to 12%.
With the publication of the State Councils opinions on promoting the healthy development of photovoltaic industry and the announcement of the National Energy Board issued the notice on the construction of distributed photovoltaic power application demonstration area, the industry is generally optimistic about PV market prospects.
In the development of the domestic photovoltaic industry under the increasingly uncertain situation, problems of the industry product quality and the service life of the development of the industry has also become a stumbling block.
25 years has been widely claimed by domestic photovoltaic module manufacturers, and domestic manufacturers generally have 25 years of commitment to power guarantee, but is that true? DuPont photovoltaic technology manager, Fu Bo admitted that the efficiency of PV modules has improved steadily in recent years, but the quality and service life of components have not yet been effectively solved. He said that many components are less than 10 years of service life from the current life of photovoltaic modules.
Components need to work for 25 consecutive years. After the warranty period is guaranteed, whether the components can continue to operate and how to guarantee the quality depends on the constraints of manufacturers. There are experts.