Solar cell module

Patent metadata

Field	Value
Publication number	US-9728658-B2
Application number	US-50913709-A
Country	US
Kind code	B2
Filing date	Jul 24, 2009
Priority date	Aug 8, 2008
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A first solar cell is electrically connected to a second solar cell electrically and arranged in an array direction. Each of the first and second solar cell comprises: a light-receiving surface; a rear surface; a plurality of n-type side electrodes and p-type side electrodes both formed in the array direction on the rear surface; a wiring member electrically connecting the first solar cell and the second solar cell and arranged over the plurality of n-type side electrodes and the plurality of p-type side electrodes; an n-type side electrode insulating member that is arranged over the wiring member and covers a part of the plurality of n-type side electrodes, the part facing the wiring member; and a p-type side electrode insulating member that is arranged over the wiring member and covers a part of the plurality of p-type side electrodes, the part facing the wiring member.

First claim

What is claimed is:

1. A solar cell module comprising:
a first solar cell;
a second solar cell electrically connected with the first solar cell and placed in an array direction with the first solar cell; and
a wiring member electrically connecting the first solar cell and the second solar cell,
wherein the first solar cell and the second solar cell each comprise:
a light-receiving surface;
a rear surface arranged on a back side of the light-receiving surface;
first-type electrodes each having a facing part and a connecting end on the rear surface, the facing part being positioned at an end opposite to the connecting end in the array direction;
second-type electrodes each having a facing part and a connecting end on the rear surface, the facing part being positioned at an end opposite to the connecting end in the array direction;
a first-type electrode insulating member arranged on the facing part of each of the first-type electrodes; and
a second-type electrode insulating member arranged on the facing part of each of the second-type electrodes, and

wherein
the thickness of the facing part of each of the first-type electrodes facing the wiring member in the first solar cell is thinner than the thickness of the connecting end of each of the second-type electrodes in the first solar cell such that the facing part of each of the first-type electrodes does not contact the wiring member in the first solar cell and the connecting end of each of the second-type electrodes connects the wiring member in the first solar cell,
the thickness of the facing part of each of the second-type electrodes facing the wiring member in the second solar cell is thinner than the thickness of the connecting end of each of the first-type electrodes in the second solar cell such that the facing part of each of the second-type electrodes does not contact the wiring member in the second solar cell and the connecting end of each of the first-type electrodes connects the wiring member in the second solar cell,
a portion of each of the first-type electrodes between the connecting end and the facing part thereof in the array direction has the same thickness as the thickness of the connecting end thereof, and the portion thereof does not connect the wiring member, and
a portion of each of the second-type electrodes between the connecting end and the facing part thereof in the array direction has the same thickness as the thickness of the connecting end thereof, and the portion thereof does not connect the wiring member.

2. The solar cell module of claim 1 , wherein the first-type electrodes and the second-type electrodes are arranged alternately in the first solar cell and the first-type electrodes and the second type electrodes are arranged alternately in the second solar cell.

3. The solar cell module of claim 1 , wherein
each first-type electrode insulating member is arranged on a first end side of the first solar cell in the array direction and each second-type electrode insulating member is arranged on a second end side of the first solar cell in the array direction.

4. The solar cell module of claim 1 , wherein each second-type electrode insulating member and each first-type electrode insulating member are made essentially of polyimide resin.

5. The solar cell module of claim 1 , wherein the first-type electrode insulating member covers an exposed side of each of the first-type electrodes.

6. The solar cell module of claim 1 , wherein each of the first-type electrodes has n-type conductivity, and each of the second-type electrodes has p-type conductivity.

7. The solar cell module of claim 1 , wherein each of the first-type electrodes has p-type conductivity, and each of the second-type electrodes has n-type conductivity.

8. The solar cell module of claim 1 , wherein the width of the wiring member is greater than a distance between adjacent cells in the array direction.

9. The solar cell module of claim 1 , wherein the wiring member has a flat-plate shape.

10. A solar cell module comprising:
a first solar cell;
a second solar cell electrically connected with the first solar cell and placed in an array direction with the first solar cell; and
a wiring member electrically connecting the first solar cell and the second solar cell,
wherein the first solar cell and the second solar cell each comprise:
a light-receiving surface;
a rear surface arranged on a back side of the light-receiving surface;
first-type electrodes each having a facing part and a connecting end on the rear surface, the facing part being positioned at an end opposite to the connecting end in the array direction;
second-type electrodes each having a facing part and a connecting end on the rear surface, the facing part being positioned at an end opposite to the connecting end in the array direction, the first-type electrodes and the second-type electrodes being arranged alternately and in parallel to each other;
a first-type electrode insulating member arranged on the facing part of each of the first-type electrodes but not on the facing part of each of the second-type electrodes; and
a second-type electrode insulating member arranged on the facing part of each of the second-type electrodes but not on the facing part of each of the first-type electrodes, and

wherein
the wiring member is arranged as a straight line over a first end side of the first-type electrodes and the second-type electrodes in the array direction,
the thickness of the facing part of each of the first-type electrodes facing the wiring member in the first solar cell is thinner than the thickness of the connecting end of each of the second-type electrodes in the first solar cell such that the facing part of each of the first-type electrodes does not contact the wiring member in the first solar cell and the connecting end of each of the second-type electrodes connects the wiring member in the first solar cell,
the thickness of the facing part of each of the second-type electrodes facing the wiring member in the second solar cell is thinner than the thickness of the connecting end of each of the first-type electrodes in the second solar cell such that the facing part of each of the second-type electrodes does not contact the wiring member in the second solar cell and the connecting end of each of the first-type electrodes connects the wiring member in the second solar cell,
a portion of each of the first-type electrodes between the connecting end and the facing part thereof in the array direction has the same thickness as the thickness of the connecting end thereof, and the portion thereof does not connect the wiring member, and
a portion of each of the second-type electrodes between the connecting end and the facing part thereof in the array direction has the same thickness as the thickness of the connecting end thereof, and the portion thereof does not connect the wiring member.

11. The solar cell module of claim 10 , wherein each first-type electrode insulating member is arranged on the first end side of the first-type electrodes and each second-type electrode insulating member is arranged on a second end side of the second-type electrodes.

Assignees

• Mishima Takahiro
• Sakata Hitoshi
• Panasonic Ip Man Co Ltd

Inventors

• Mishima Takahiro
• Sakata Hitoshi

Classifications

• H01L31/0516

  Electricity · mapped topic

• H01L31/022433 Primary

  Electricity · mapped topic

• Y02E10/50

  Photovoltaic [PV] energy · CPC title

• H10F77/215 Primary

  Geometries of grid contacts · CPC title

• H10F19/904

  characterised by the shapes of the structures · CPC title