Patents by Inventor Quanqing Yu

Quanqing Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Solar cell sheet and heat treatment process thereof
    Patent number: 9419149
    Abstract: Provided are a solar cell sheet and a heat treatment process thereof. The heat treatment process includes: a) sifting from solar cell sheets after printed and sintered cell sheets with conversion efficiency lower than 18% and filling factor thereof higher than 70%; b) performing low temperature annealing on the sifted cell sheets; c) sifting from the cell sheets after low temperature annealing cell sheets with lowered filling factor; d) re-sintering the sifted cell sheets; and e) sifting from the re-sintered cell sheets cell sheets with conversion efficiency lower than 18% and returning back to b) until most or all of the sifted meet demands.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: August 16, 2016
    Assignee: YINGLI ENERGY (CHINA) COMPANY LIMITED
    Inventors: Hongfang Wang, Jingfeng Xiong, Zhiyan Hu, Gaofei Li, Haijiao An, Quanqing Yu, Wei Liu, Hao Lei
  • SOLAR CELL SHEET AND HEAT TREATMENT PROCESS THEREOF
    Publication number: 20140224323
    Abstract: Provided are a solar cell sheet and a heat treatment process thereof The heat treatment process includes: a) sifting from solar cell sheets after printed and sintered cell sheets with conversion efficiency lower than 18% and filling factor thereof higher than 70%; h) performing low temperature annealing on the sifted cell sheets; c) sifting from the cell sheets after low temperature annealing cell sheets with lowered filling factor; d) re-sintering the sifted cell sheets; and e) sifting from the re-sintered cell sheets cell sheets with conversion efficiency lower than 18% and returning back to b) until most or all of the sifted meet demands.
    Type: Application
    Filed: March 6, 2012
    Publication date: August 14, 2014
    Applicants: YINGLI ENERGY (CHINA) COMPANY LIMITED, BAODING JIASHENG PHOTOVOLTAIC TECHNOLOGY CO., LTD., YINGLI GROUP COMPANY LIMITED
    Inventors: Hongfang Wang, Jingfeng Xiong, Zhiyan Hu, Gaofei Li, Haijiao An, Quanqing Yu, Wei Liu, Hao Lei