Golden concord integration polycrystalline black silicon components 300 w + LeTID control technology has been industrialized mass production

On January 9th in the afternoon, by the Asian photovoltaic industry association, the poly golden concord energy holdings co. , LTD. , jointly organized the 4th pv industry chain innovation cooperation peak BBS held in suzhou. Golden concord integration, chief technology officer at the meeting for Dr Zhang Chun highly polymorphic, casting monocrystalline cells and component technology application 'keynote report.

压力; More than 2019 black crystal silicon PERC production average efficiency of 21. 5%, xin single crystal PERC average mass production efficiency can be up to 22. 2%.

very positive Shen Hui teacher's point of view, above the advancement and originality of the crystalline silicon cells, Chinese enterprises and research institutions, original this is indeed our short board. But in the enterprise, we strive for the production of high technology perfectly. The second aspect may cast single crystal small exception is such a concept, although not 100% Chinese original, but the Chinese in this technology, the contribution of original or larger.

I report is mainly in three aspects: the first aspect I'd like to make a brief report and discuss golden concord integration in the polycrystalline efficient battery, which is black silicon stack PERC this, in the past 2 & ndash; 3 years has made some progress.

first of all, we can see that is commonly known as the black silicon technology of dry method and wet, the golden concord integrated efficiency is improved based on the process optimization, the average production efficiency to do such a level of 21%. And I want to emphasize that the level of efficiency are all in the line of production equipment to together, this is neither a small laboratory, nor laboratory, pilot line, was a complete production equipment and process.

you can see the production efficiency by an average of 21% more, at the same time combined with resistance to droop process there is a small defect, efficiency is about 0. About 2% of the loss, but on the whole, the average production efficiency reached 21%. Then we can see the single highest efficiency 21. 62%, nor laboratory technology, but completely production of such a test results. Efficiency of about 21% at the same time as you can see such a distribution, and the proportion of accounted for 60%, 70%.

so we can see on the component side at the same time, we can compare this, in combination with conventional component, one is white EVA, EVA is a transparent, 20. 9% efficiency of the gear can be 360 - watt level, that is to say, polycrystalline efficient battery we can do it component 300 watts of average level.

the current wet black silicon is also the mainstream at the same time, the effect of technology so we mentioned before, whether it's on the dry method and wet method can complete a general result, mainly on the wet compared with the optimization of resistivity, Dr Wang Xu born at the same time also said subsequent polycrystalline combination of SE technology, through such a technology on polycrystalline has also been the embodiment of the efficiency gains.

you can see the wet polycrystalline efficiency is no superposition effect technology production line, so according to the actual situation, production equipment do 20 wet black silicon. 6% and 20. 4%. If stack like dry lift effect technology, general wet efficiency is lower than dry 0. About 2%, so we wet black method combined with the PERC can be 20. 8% of the volume effect.

the same on the law of components, just wet the black silicon in Dr Wang Xu raw mentioned components of CTM side relative to the dry process has the advantage, although is 20. The efficiency of 6%, the same 300 - watt can do more than 50% of the proportion of components.