Integrated type solar battery

• US 5,259,891 A
• Filed: 03/02/1992
• Issued: 11/09/1993
• Est. Priority Date: 03/04/1991
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Matsuda, Koichi, Murakami, Tsutomu, Matsuyama, Jinsho
• Primary Examiner(s): Weisstuch, Aaron
• Application Number:
  US07/844,749
• Time in Patent Office: 617 Days
• Field of Search: 136/244, 136/249 MS
• US Class Current: 136/244
• CPC Class Codes: H01L 31/03921 including only elements of Group IV of the Periodic Table
• CPC Class Codes: H01L 31/046 PV modules composed of a plurality of thin film solar cells deposited on the same substrate
• CPC Class Codes: H01L 31/0465 comprising particular structures for the electrical interconnection of adjacent PV cells in the module H01L31/0463 takes precedence
• CPC Class Codes: H01L 31/0508 the interconnection means having a particular shape
• CPC Class Codes: H01L 31/0749 including a AIBIIICVI compound, e.g. CdS/CulnSe2 [CIS] heterojunction solar cells
• CPC Class Codes: Y02E 10/541 CuInSe2 material PV cells

Abstract

An integrated type solar battery comprises a plurality of solar batteries serially connected. An upper electrode of one of a pair of adjacent solar batteries and a lower electrode of the other solar battery are connected via a lead wire. A groove of the boundary of the adjacent solar batteries is filled with an insulative material to a thickness sufficient to cover edge portions of the adjacent solar batteries. A conductive material is arranged so as to connect an upper portion of the insulative material and the upper electrode of one of the adjacent solar batteries. The lead wire is arranged over the insulative material along the groove portion of the boundary of the adjacent solar batteries so as to be connected to the conductive material. The lead wire is connected to the lower electrode of the other solar battery.

Claims

1. A device comprising a plurality of serially connected solar cells, each cell comprising a laminate of a first electrode layer, a photovoltaic semiconductor layer provided on said first electrode, and a second electrode layers provided on said photovoltaic semiconductor layer, said device further comprising:

an insulative member provided at the boundary between each adjacent pair of said solar cells, so as to cover each of the layers of said laminates at both opposed edges of each said adjacent pair of solar cells;

a first conductive member electrically connected to said second electrode of one of each said adjacent pair of solar cells; and

a second conductive member positioned on said insulative member and electrically connected to said first conductive member and to said first electrode of the other of each said adjacent pair of solar cells.

2. A device according to claim 1, wherein

said solar cells are positioned on a common substrate.

3. A device according to claim 2, wherein

said common substrate is an insulative one or is one formed by coating an insulative layer onto a conductive substrate.

4. A device according to claims 1, 2 or 3, wherein

said first conductive member is a current collection electrode.

5. A device according to claims 1, 2 or 3 wherein

said photovoltaic semiconductor layer is made of an amorphous semiconductor.

6. A device according to claim 4 wherein

said photovoltaic semiconductor layer is made of an amorphous semiconductor.

7. A device according to claim 1, wherein

sections of insulative member or size 2 μ

m-1 mm extend over the opposed edges of said second electrodes.

8. A device according to claim 1, wherein

said insulative material is made of SiO₂, Si₃ N₄, Al₂ O3, epoxy resin, polyamide, polyester, or silicone resin.

9. A device according to claim 1, wherein

said second conductive member is a lead wire.

10. A device according to claim 1, wherein

said first conductive member is made from a conductive paste.

11. A device according to claim 1, wherein

said second electrode is a transparent electrode.

12. A device according to claim 1, wherein

said first electrode of the other of the adjacent pair of solar cells is electrically connected to said second conductive member at a non-opposed edge thereof of said one of said adjacent pair of solar cells.