US 12,191,407 B2
Crystal silicon solar cell module and cell aggregate for crystal silicon solar cell module
Kunta Yoshikawa, Settu (JP)
Assigned to KANEKA CORPORATION, Osaka (JP)
Appl. No. 17/605,983
Filed by KANEKA CORPORATION, Osaka (JP)
PCT Filed Apr. 10, 2020, PCT No. PCT/JP2020/016065
§ 371(c)(1), (2) Date Oct. 22, 2021,
PCT Pub. No. WO2020/218026, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-081587 (JP), filed on Apr. 23, 2019.
Prior Publication US 2022/0209032 A1, Jun. 30, 2022
Int. Cl. H01L 31/0224 (2006.01); H01L 31/05 (2014.01); H01L 31/068 (2012.01)
CPC H01L 31/022441 (2013.01) [H01L 31/0516 (2013.01); H01L 31/0682 (2013.01)] 5 Claims
OG exemplary drawing
 
5. A cell aggregate for a crystal silicon solar cell module, the cell aggregate composed of an aggregate of a plurality of small segments respectively forming a plurality of PERC solar cells when the aggregate is separated into pieces,
the cell aggregate having one side and an opposed side to the one side,
the plurality of small segments respectively defined by defining lines that are straight lines substantially parallel to the one side of the cell aggregate, wherein
each of the plurality of small segments comprises:
a single crystal silicon substrate of one conductivity type having a first major surface and a second major surface;
a diffusion layer of reverse conductivity type that is in contact with the first major surface;
a first collection electrode that is in contact with the diffusion layer on a side opposite to a side on which the diffusion layer is in contact with the single crystal silicon substrate;
a first connection electrode that is in contact with the diffusion layer and the first collection electrode;
an insulation layer that is in contact with the second major surface and has at least one opening portion extending therethrough;
a second collection electrode that is in contact with the insulation layer on a side opposite to a side on which the insulation layer is in contact with the single crystal silicon substrate, and that is connected to the single crystal silicon substrate via the at least one opening portion; and
a second connection electrode that is in contact with the second collection electrode on a side opposite to a side on which the second collection electrode is in contact with the insulation layer,
the first connection electrode and the second connection electrode are separated from each other when viewed from a direction substantially perpendicular to the first major surface in the each of the plurality of small segments,
the second collection electrode is separated from the one side of the cell aggregate and separated from the opposed side to the one side of the cell aggregate, when viewed from a direction substantially perpendicular to the second major surface,
in a small segment including the one side of the cell aggregate among the plurality of small segments, the second connection electrode is provided along the defining line away from the one side of the cell aggregate, and
in a small segment including the other side of the cell aggregate among the plurality of small segments, the second connection electrode is provided along the defining line away from the opposed side of the cell aggregate.