{"id":354,"date":"2021-08-16T12:51:12","date_gmt":"2021-08-16T12:51:12","guid":{"rendered":"https:\/\/blog.solartraders.com\/?p=354"},"modified":"2024-11-05T15:32:19","modified_gmt":"2024-11-05T15:32:19","slug":"longi-solar-new-efficiency-for-topcon-solar-cell-and-introduction-of-a-bifacial-n-type-topcon-solar-modul","status":"publish","type":"post","link":"https:\/\/blog.solartraders.com\/en\/2021\/08\/16\/longi-solar-new-efficiency-for-topcon-solar-cell-and-introduction-of-a-bifacial-n-type-topcon-solar-modul\/","title":{"rendered":"Longi Solar: new efficiency for Topcon solar cell and introduction of a bifacial n-type Topcon solar modul"},"content":{"rendered":"

In addition to Jinko<\/a> and other well- known manufacturers for photovoltaic products, the Chinese manufacturer Longi Solar<\/a> also achieves a new efficiency for its Topcon solar cell and also places a new product on the market.  <\/p>\n\n\n\n

In this article, we will take a closer look at Longi’s innovations.    <\/p>\n\n\n\n

0.12 percent efficiency improvement for tunnel oxide passivation contact technology (Topcon) solar cell sets new record  <\/strong> <\/h2>\n\n\n\n

Longi<\/a> announced it has achieved a 0.12 percentage point increase in just one month. At the beginning of May, the efficiency was 25.09 percent. Now, however, it stands at a new record of 25.21 percent. Back in May, the Chinese photovoltaic manufacturer mentioned that a solar  cell  based on such  technology  had surpassed  the  25  percent  mark  for  the  first  time. However, the technical background necessary to achieve this goal was not mentioned. Li Hua,  head  of  cell  research and development, explained that in order to achieve the respective targets, Longi always  tries to stay close to the essence of the technology. The  best  possible  technical  path  is  selected to maximize the performance potential of each product. In  addition,  necessary  changes  are always initiated immediately in order to be able to achieve the maximum of its own technical change. This  approach  currently  makes  Longi  the  world’s  largest  solar  manufacturer  in  terms  of market value and sales.  <\/p>\n\n\n\n

Bifacial n-type  Topcon  solar  module  with an efficiency of 22.3percent storms the market<\/strong><\/h2>\n\n\n\n

In addition to increasing the efficiency of the tunnel oxide topcon solar cell, Longi introduced a newproduct in June this year. This is a bifacial n type  topcon  solar  module  with  a  calculated  efficiency of 22.3 percent overall. This 144-half-cell  module  is  to  be  available  in  six  versions  with outputs between 545 and 570 watts and with an efficiency between 21.3 and 22.3 percent.   <\/p>\n\n\n\n

Within the following table you can find a summary of the most important data: <\/p>\n\n\n\n

<\/em><\/strong> <\/td>HiKu7 CS7N-MS<\/strong> <\/td><\/tr>
Dimension<\/strong><\/td>2256mm x 1133mm x 35mm <\/td><\/tr>
Weight<\/strong><\/td>32,3 kg <\/td><\/tr>
Efficiency<\/strong><\/td>between 21,3 an 22,3 percent <\/td><\/tr>
Open circuit voltage<\/strong> <\/td>between 50,85 and 51,60 volts <\/td><\/tr>
Short circuit current<\/strong> <\/td>ranges from 13,46 to 13,81 amps <\/td><\/tr>
Maximum system voltage<\/strong> <\/td>1500 volts <\/td><\/tr>
Mono-crystalline half cell count  <\/strong> <\/td>144 <\/td><\/tr>
Protection class<\/strong> <\/td>IP68 <\/td><\/tr>
Operating temperatures<\/strong> <\/td>Use at between -40 and +85 degrees Celsius <\/td><\/tr>
Operating temperature coefficient<\/strong> <\/td>0.31 percent per degree Celsius <\/td><\/tr>
Performance guarantee<\/strong> <\/td>30 years <\/td><\/tr>
Product warranty<\/strong> <\/td>12 years <\/td><\/tr>
Power loss<\/strong> <\/td>after 30\u00a0years\u00a0not\u00a0less\u00a0than\u00a087.40\u00a0percent\u00a0of\u00a0nominal\u00a0output\u00a0power<\/td><\/tr>
Other specifications<\/strong> <\/td>features two-millimeter thick  coated  tempered glass and anodized aluminum alloyframe <\/td><\/tr><\/tbody><\/table>
Productfeatures HiKu7 CS7N-MS<\/strong>  <\/figcaption><\/figure>\n\n\n\n

Longi<\/a>\u00a0has\u00a0hereby\u00a0produced\u00a0a\u00a0module\u00a0based\u00a0on\u00a0the\u00a0company’s\u00a0proprietary\u00a0high-performance\u00a0 computing\u00a0technology. The Chinese PV\u00a0 manufacturer\u00a0 promises\u00a0 us\u00a0 here\u00a0 to\u00a0 have produced\u00a0 a\u00a0 module\u00a0which\u00a0has,\u00a0\u00a0<\/p>\n\n\n\n