Solar cell module and method for manufacturing the same

• US 8,299,350 B2
• Filed: 08/01/2008
• Issued: 10/30/2012
• Est. Priority Date: 08/02/2007
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Saita, Atsushi, Yoshimine, Yukihiro, Okamoto, Shigeyuki, Tsunomura, Yasufumi, Taira, Shigeharu, Hashimoto, Haruhisa, Kanno, Hiroshi
• Primary Examiner(s): Johnson, Jonathan
• Assistant Examiner(s): Bourke, Allison
• Application Number:
  US12/184,400
• Publication Number:
  US 20090032081A1
• Time in Patent Office: 1,551 Days
• Field of Search: 136/244, 136/256
• US Class Current: 136/244
• CPC Class Codes: H01L 31/022425 for solar cells
• CPC Class Codes: H01L 31/0508 the interconnection means having a particular shape
• CPC Class Codes: H01L 31/0747 comprising a heterojunction of crystalline and amorphous materials, e.g. heterojunction with intrinsic thin layer
• CPC Class Codes: H01L 31/1876 Particular processes or apparatus for batch treatment of the devices
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

With the method for manufacturing the solar cell module 100 according to the present embodiment, the width W1 of the connection region C in which the wiring member 11 and the connecting electrode 40 are electrically connected is set to be larger than the substantially half of the width W2 of the wiring member 11 in the thermocompression bonding process of the wiring member 11 using the resin adhesive 12 including the particles 13 onto the principal surface of the solar cell 10.

Claims

1. A solar cell module comprising first and second solar cells arranged in a line in a first direction and a wiring member electrically connecting the first and second solar cells, wherein

the first and second solar cells each include a photoelectric conversion part configured to produce photogenerated carriers by receiving light and a collecting electrode which is formed on a principal surface of the photoelectric conversion part and is configured to collect the photogenerated carriers,

the wiring member is provided in the first direction on the principal surfaces of the first and second solar cells,

a resin adhesive is provided between the wiring member and the principal surfaces of the first and second solar cells,

a cross section of the wiring member is convexly formed toward the first and second solar cells, the cross section being substantially perpendicular to the first direction, and

in a second direction substantially perpendicular to the first direction, a width of a connection region in which the wiring member and the collecting electrode are electrically connected is larger than a substantially half a width of the wiring member

in an edge portion of the wiring member in the second direction, the wiring member and the collecting electrode are connected by a resin in the resin adhesive, the resin continuing from a surface of the wiring member to a surface of the collecting electrode.

2. The solar cell module according to claim 1, wherein

the collecting electrode includes a plurality of thin wire electrodes configured to collect the generated carriers from the photoelectric conversion part and a connecting electrode configured to collect the photogenerated carriers from the thin wire electrodes,

the connecting electrode is formed in the first direction,

the wiring member is provided on the connecting electrode,

the resin adhesive includes a plurality of conductive particles, and

the connection region is formed by the particles included in the resin adhesive.

3. The solar cell module according to claim 2, wherein

the connecting electrode has a protruding portion convexly formed toward the wiring member,

the protruding portion is formed in an edge portion of the connecting electrode in the second direction, and

the protruding portion digs in the wiring member.

4. The solar cell module according to claim 1,

wherein the collecting electrode includes a plurality of thin wire electrodes configured to collect the photogenerated carriers from the photoelectric conversion part, and

the connection region is formed by embedding portions of the thin wire electrodes in the wiring member.