Solar cell module, wiring sheet, and method of manufacturing wiring sheet

Patent metadata

Field	Value
Publication number	US-2019131466-A1
Application number	US-201816168739-A
Country	US
Kind code	A1
Filing date	Oct 23, 2018
Priority date	Oct 26, 2017
Publication date	May 2, 2019
Grant date	—

Abstract

Wires (22) electrically connecting solar cells (10) include first wires (22a) and second wires (22b). The first wires (22a) are connected to the first-conductivity-type electrodes (12) of a first one of the solar cells (10) and the second-conductivity-type electrodes (13) of a second one of the solar cells 10 that is adjacent to the first one of the solar cells (10). The second wires (22b) are connected to the second-conductivity-type electrodes (13) of the first one of the solar cells (10) and the first-conductivity-type electrodes (12) of the second one of the solar cells (10). The second wires (22b) are electrically separated by holes (21a) extending through both the second wires (22b) and an insulating base member (21).

First claim

What is claimed is:

1 . A solar cell module comprising:
solar cells each including first-conductivity-type electrodes and second-conductivity-type electrodes on one of faces of a semiconductor substrate; and a wiring sheet including wires on an insulating base member, wherein: the solar cells comprise a first solar cell and a second solar cell that are disposed in a prescribed cell array direction and that are electrically connected by the wires; the wires are shaped like strips extending in the cell array direction and comprise first wires and second wires disposed side by side in a direction intersecting the cell array direction; the first and second wires extend straddling the first and second solar cells; the first wires are connected to the first-conductivity-type electrodes of the first solar cell and to the second-conductivity-type electrodes of the second, adjacent solar cell; the second wires are connected to the second-conductivity-type electrodes of the first solar cell and to the first-conductivity-type electrodes of the second solar cell; and the second wires are electrically separated by holes extending through both the second wires and the insulating base member.

2 . The solar cell module according to claim 1 , wherein:
the solar cells further comprise a third solar cell opposite the first solar cell from the second solar cell and adjacent to the first solar cell; the second wires are connected to the second-conductivity-type electrodes of the first solar cell and to the first-conductivity-type electrodes of the third solar cell; the first wires are connected to the first-conductivity-type electrodes of the first solar cell and to the second-conductivity-type electrodes of the third solar cell; and the first wires are electrically separated by holes extending through both the first wires and the insulating base member.

3 . The solar cell module according to claim 1 , further comprising:
an encapsulant sandwiching the solar cells and the wiring sheet; a transparent substrate on a solar-cell-side of the encapsulant; and a back-face-protection member on a wiring-sheet-side of the encapsulant, wherein the encapsulant is partially existent in the holes.

4 . A wiring sheet for disposing a first solar cell and a second solar cell side by side in a prescribed cell array direction for electric connection between the first and second solar cells, the first and second solar cells each including first-conductivity-type electrodes and second-conductivity-type electrodes on one of faces of a semiconductor substrate, the wiring sheet comprising: an insulating base member; and wires on the insulating base member,
wherein: the wires are shaped like strips extending in the cell array direction and comprise first wires and second wires disposed side by side in a direction intersecting the cell array direction; the first and second wires extend straddling areas in which the first and second solar cells are to be disposed in the cell array direction; the first wires are located so as to connect to the first-conductivity-type electrodes of the first solar cell and to the second-conductivity-type electrodes of the second, adjacent solar cell; the second wires are located so as to connect to the second-conductivity-type electrodes of the first solar cell and to the first-conductivity-type electrodes of the second solar cell; and the second wires are separated by holes extending through both the second wires and the insulating base member.

5 . The wiring sheet according to claim 4 , wherein the wires are fixedly attached onto the insulating base member such that the wires each have parts of side faces thereof fixedly attached by an adhesive.

6 . The wiring sheet according to claim 4 , wherein the holes each have a larger width than do the wires.

7 . The wiring sheet according to claim 4 , wherein the holes each have, in a plan view thereof, a profile made of a continuous line with no corners.

8 . The wiring sheet according to claim 4 , wherein the holes are located in areas where none of the solar cells are to be disposed.

9 . The wiring sheet according to claim 4 , wherein the holes are partially located in an area where either one or both of the two adjacent solar cells is/are to be disposed.

10 . A method of manufacturing a wiring sheet for electrically connecting, using wires on an insulating base member, a plurality of solar cells each including first-conductivity-type electrodes and second-conductivity-type electrodes on one of faces of a semiconductor substrate, the method comprising:
the provision step of extending a plurality of wiring members constituting the wires in a direction in which the solar cells are to be disposed and disposing, on the insulating base member, the plurality of wiring members side by side in a direction intersecting the direction in which the plurality of wiring members is extended; and the removing step of removing the plurality of wiring members and the insulating base member so as to form holes through both the wires and the insulating base member.

Assignees

• Sharp Kk

Inventors

• Dotta Yoshihisa
• Horinaka Hajime
• Katohno Kohichi
• ZOU Liumin
• Inoue Tetsuyoshi

Classifications

• H01L31/0516

  Electricity · mapped topic

• H01L31/022425

  Electricity · mapped topic

• H01L31/02021 Primary

  Electricity · mapped topic

• H10F77/955

  for photovoltaic devices · CPC title

• H10F77/219

  Arrangements for electrodes of back-contact photovoltaic cells · CPC title