Solar battery cell, solar battery module, method of making solar battery cell and method of making solar battery module

Patent metadata

Field	Value
Publication number	US-9837560-B2
Application number	US-201213414775-A
Country	US
Kind code	B2
Filing date	Mar 8, 2012
Priority date	Mar 8, 2011
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A solar battery cell and related methodology are provided which enable a TAB wire to be accurately connected to an intended position, thus allowing a possible increase in manufacturing costs to be suppressed. A solar battery cell includes a plurality of finger electrodes arranged on a light receiving surface of a photovoltaic substrate, the light receiving surface having a region of predetermined width to receive a conductive adhesive of a same width as the region. The region is provided with an alignment marking indicating a position where the adhesive is to be applied over the surface, the alignment marking having a cross-dimension in a widthwise direction of the region that is less than the predetermined width.

First claim

What is claimed is:

1. A solar battery module, comprising:
a plurality of solar battery cells, each of the plurality of solar battery cells comprising:
a plurality of finger electrodes arranged on a light receiving surface of a photovoltaic substrate, said light receiving surface having a region of predetermined width on which a conductive adhesive is applied;
said region being provided with an alignment marking indicating a position where the adhesive is to be applied over the surface, said alignment marking being disposed in portions of both the inside and the outside of said region in a widthwise direction of said region;
said alignment marking being a straight line orthogonal to a direction in which said finger electrodes extend and having a cross-dimension in a widthwise direction of said region that is less than said predetermined width, and said alignment marking having a line width smaller than a line width of each of the finger electrodes; and

a TAB wire positioned along the alignment marking on one of the plurality of solar battery cells and connected to the finger electrodes of said one of the plurality of solar battery cells via said conductive adhesive, and further connected to a back surface electrode formed on a back surface of another of the plurality of solar battery cells.

2. The solar battery module of claim 1 , wherein:
the alignment marking is formed of a material identical to that of the finger electrodes.

3. The solar battery module of claim 2 , wherein:
the alignment marking crosses all the finger electrodes so as to connect together two of the finger electrodes positioned nearest opposite ends of the light receiving surface, and
the alignment marking is integral with the finger electrodes.

4. The solar battery module according to claim 3 , wherein the alignment marking extends beyond said two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

5. The solar battery module of claim 1 , wherein:
the alignment marking is formed of a different material from that of the finger electrodes.

6. The solar battery module of claim 5 , wherein:
the alignment marking crosses all the finger electrodes so as to connect together two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

7. The solar battery module according to claim 6 , wherein the alignment marking extends beyond said two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

8. The solar battery module of claim 1 , wherein:
a plurality of alignment markings is provided along the direction the finger electrodes extend, with respect to said region.

9. The solar battery module of claim 1 , wherein:
said conductive adhesive has a same width as said region of predetermined width.

10. The solar battery module of claim 1 , wherein:
the alignment marking has a line width of at least 0.05 mm and at most 0.2 mm.

11. The solar battery module of claim 1 , wherein:
said conductive adhesive is a resin in which metal particles are dispersed.

12. The solar battery module of claim 1 , wherein:
said alignment marking has a continuous linear configuration.

13. The solar battery module of claim 1 , wherein:
said alignment marking has a discontinuous linear configuration including portions as dashed lines.

14. The solar battery module of claim 1 , wherein:
said alignment marking extends in a direction parallel to the direction in which said region extends.

15. A solar battery module, comprising:
a plurality of solar battery cells, each of the plurality of solar battery cells comprising:
a plurality of finger electrodes arranged on a light receiving surface of a photovoltaic substrate, said light receiving surface having a region of predetermined width on which a conductive adhesive is applied;
said region being provided with an associated line disposed in portions of both the inside and the outside of said region in a widthwise direction of said region, said associated line being a straight line orthogonal to a direction in which said finger electrodes extend and having a line width of at least 0.05 mm and at most 0.2 mm and smaller than a line width of each of the finger electrodes; and

a TAB wire positioned along the associated line on one of the plurality of solar battery cells and connected to the finger electrodes of said one of the plurality of solar battery cells via said conductive adhesive, and further connected to a back surface electrode formed on a back surface of another of the plurality of solar battery cells.

16. The solar battery module of claim 15 , wherein:
the line is formed of a material identical to that of the finger electrodes.

17. The solar battery module of claim 16 , wherein:
the line crosses all the finger electrodes so as to connect together two of the finger electrodes positioned nearest opposite ends of the light receiving surface, and
the line is integral with the finger electrodes.

18. The solar battery module of claim 17 , wherein:
the line extends beyond said two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

19. The solar battery module of claim 15 , wherein:
the line is formed of a different material from that of the finger electrodes.

20. The solar battery module of claim 19 , wherein:
the line crosses all the finger electrodes so as to connect together two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

21. The solar battery module of claim 20 , wherein:
the line extends beyond said two of the finger electrodes positioned nearest opposite ends of the light receiving surface.

22. The solar battery module of claim 15 , wherein:
a plurality of lines is provided along a direction in which the finger electrodes extend, with respect to said region.

23. The solar battery module of claim 15 , wherein:
said conductive adhesive has a same width as said region of predetermined width.

24. The solar battery module of claim 15 , wherein:
said conductive adhesive is a resin in which metal particles are dispersed.

25. The solar battery module of claim 15 , wherein:
said associated line has a continuous linear configuration.

26. The solar battery module of claim 15 , wherein:
said associated line has a discontinuous linear configuration including portions as dashed lines.

27. The solar battery module of claim 15 , wherein:
said associated line extends in a direction parallel to the direction in which said region extends.

28. A solar battery module, comprising:
a plurality of solar battery cells, each of the plurality of solar battery cells comprising:
a plurality of finger electrodes arranged on a light receiving surface of a photovoltaic substrate, said light receiving surface having a region of predetermined width on which a conductive adhesive is applied;
said region being provided with a line disposed in portions of both the inside and the outside of said region in a widthwise direction of said region, said line being a straight line orthogonal to direction in which said finger electrodes extend and having a line width equal to or smaller than a line width of each of the finger electrodes; and

a TAB wire positioned along the line on one of the plurality of solar battery cells and connected to the finger electr

Assignees

• Tsuruoka Yasuo
• Takemura Kenzou
• Fukushima Naoki
• Asakawa Yusuke
• Hitachi Chemical Co Ltd

Inventors

• Tsuruoka Yasuo
• Takemura Kenzou
• Fukushima Naoki
• Asakawa Yusuke

Classifications

• Y10T29/49002

  Electrical device making · CPC title

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• H01L31/0504

  Electricity · mapped topic

• H01L31/022433

  Electricity · mapped topic

• H01L31/022425 Primary

  Electricity · mapped topic