US 12,074,246 B2
Method for soldering solar cell, cell string, photovoltaic module, and soldering device
Yongqian Wang, Yiwu (CN); Ning Zhang, Yiwu (CN); Wenli Xu, Yiwu (CN); Gang Wang, Yiwu (CN); and Gang Chen, Yiwu (CN)
Assigned to SOLARLAB AIKO EUROPE GMBH, Freiburg (DE)
Filed by Solarlab Aiko Europe GmbH, Freiburg (DE)
Filed on Jun. 30, 2023, as Appl. No. 18/216,633.
Application 18/216,633 is a division of application No. 17/845,962, filed on Jun. 21, 2022, granted, now 11,728,454.
Claims priority of application No. 202210201738.9 (CN), filed on Mar. 3, 2022.
Prior Publication US 2023/0402561 A1, Dec. 14, 2023
Int. Cl. H01L 31/18 (2006.01); H01L 31/0224 (2006.01); H01L 31/05 (2014.01)
CPC H01L 31/186 (2013.01) [H01L 31/022425 (2013.01); H01L 31/05 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A soldering device, comprising a soldering platform, a first clamping portion, a second clamping portion, third clamping portions, and a heater, wherein
the soldering platform is configured to carry a plurality of back contact cells, and gaps are formed between adjacent back contact cells; and the gaps comprise first gaps and second gaps that are disposed alternately with each other;
back surfaces of the back contact cells face away from the soldering platform, and electrodes corresponding to two adjacent back contact cells have opposite polarities in a connection direction of a plurality of ribbons; the plurality of ribbons comprise first ribbons and second ribbons, and polarities of electrodes of one of the back contact solar cells corresponding to the first ribbons are opposite to polarities of electrodes of another one of the back contact solar cells corresponding to the second ribbons;
the first clamping portion, the second clamping portion, and the third clamping portions respectively correspond to head ends, tail ends, and middle portions of the plurality of ribbons, and are configured to place the plurality of ribbons on the electrodes of the plurality of back contact cells;
the third clamping portions comprise cutting members;
the third clamping portions comprise one or more clamping portions for grabbing the first ribbons at the first gaps, and the third clamping portions comprise another one or more clamping portions for grabbing the second ribbons at the second gaps; and
the heater is configured to heat the plurality of ribbons to connect the plurality of ribbons to the plurality of back contact cells.