US 11,721,776 B2
Photovoltaic module
Zhiqiu Guo, Zhejiang (CN); Guohui Hao, Zhejiang (CN); Wusong Tao, Zhejiang (CN); Shiliang Huang, Zhejiang (CN); Luchuang Wang, Zhejiang (CN); and Yingying Peng, Zhejiang (CN)
Assigned to Shanghai Jinko Green Energy Enterprise Management Co., Ltd., Shanghai (CN); and Zhejiang Jinko Solar Co., Ltd., Zhejiang (CN)
Filed by SHANGHAI JINKO GREEN ENERGY ENTERPRISE MANAGEMENT CO., LTD, Shanghai (CN); and ZHEJIANG JINKO SOLAR CO., LTD., Zhejiang (CN)
Filed on Aug. 27, 2021, as Appl. No. 17/459,614.
Claims priority of application No. 202110807252.5 (CN), filed on Jul. 16, 2021; and application No. 202121625350.9 (CN), filed on Jul. 16, 2021.
Prior Publication US 2023/0026617 A1, Jan. 26, 2023
Int. Cl. H01L 31/05 (2014.01); H01L 31/054 (2014.01); H01L 31/048 (2014.01)
CPC H01L 31/0508 (2013.01) [H01L 31/0488 (2013.01); H01L 31/0512 (2013.01); H01L 31/0547 (2014.12)] 10 Claims
OG exemplary drawing
 
1. A photovoltaic module, comprising:
a solar cell string comprising a plurality of solar cells, adjacent two of the plurality of solar cells being connected by a solder strip, wherein the solder strip is connected to a front surface of one solar cell and to a back surface of another solar cell, and a long-side size of the solar cell is within a range of 150 mm to 220 mm;
two protective adhesive layers respectively covering a front surface and a back surface of the solar cell string, wherein a size difference between a thickness of one protective adhesive layer and a thickness of the solder strip is defined as a first thickness, a ratio of the first thickness to the thickness of one protective adhesive layer is not less than 5% and not greater than 15%;
a transparent plate covering a surface of the protective adhesive layer on the front surface of the solar cell string; and
a back plate covering a surface of the protective adhesive layer on the back surface of the solar cell string;
each of the plurality of solar cells comprises a single-layer region and an overlapping region, and adjacent two of the solar cells are stacked in the overlapping region, and the protective adhesive layer has a gram weight of 245 g/m2 to 430 g/m2;
the solder strip comprises a reflective section and a flat section connected to the reflective section, the reflective section is arranged in the single-layer region, and the flat section is at least partially arranged in the overlapping region; and
a cross section of the flat section is a cashew-shaped surface, and the cashew-shaped surface is defined by planar regions on both sides of the solder strip in a thickness direction and arc-shaped regions on both sides of the solder strip in a width direction.