Solar battery module

• US 20020050286A1
• Filed: 06/22/2001
• Published: 05/02/2002
• Est. Priority Date: 03/25/1998
• Status: Active Grant

• Current Assignee: TDK Corporation
• Original Assignee: TDK Corporation
• Inventors: Kubota, Yuichi
• Granted Patent: US 6,452,089 B1
• Time in Patent Office: Days
• US Class Current: 136/244
• CPC Class Codes: B32B 27/306 comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: H01L 31/02 Details
• CPC Class Codes: H01L 31/02008 for solar cells or solar cell modules
• CPC Class Codes: H01L 31/022466 made of transparent conductive layers, e.g. TCO, ITO layers
• CPC Class Codes: H01L 31/022475 composed of indium tin oxide [ITO]
• CPC Class Codes: H01L 31/022483 composed of zinc oxide [ZnO]
• 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 31/048 Encapsulation of modules
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y10S 136/291 Applications

Abstract

An object of the invention is to provide a solar battery module having a high efficiency power generating ability, a harmony of design without an odd sensation, and a freedom of design. The object is achieved by a solar battery module comprising, on a light-receiving surface thereof, a photoelectric conversion section for converting incident light into electricity, the photoelectric conversion section comprising silicon, and an insulating color film disposed in regions other than the photoelectric conversion section for reducing a color difference from the photoelectric conversion section.

Claims

1. A solar battery module comprising, on a light-receiving surface thereof,

a photoelectric conversion section for converting incident light into electricity, said photoelectric conversion section comprising silicon, and

an insulating color film disposed in regions other than said photoelectric conversion section for reducing a color difference from said photoelectric conversion section.

2. The solar battery module of claim 1 wherein said insulating color film comprises pigment particles dispersed in a binder.

3. The solar battery module of claim 1 wherein said insulating color film comprises a microparticulate white pigment as pigment particles dispersed therein.

4. The solar battery module of claim 1 wherein said photoelectric conversion section comprises a non-single-crystal silicon film.

5. The solar battery module of claim 1 further comprising a diffuse transmission layer above the light-receiving surface of the solar battery module.

6. The solar battery module of claim 5 wherein the color difference Δ

E between the insulating color film and the photoelectric conversion section as perceived through the diffuse transmission layer is up to 5.0.

7. The solar battery module of claim 5 further comprising a selective reflecting layer above and/or below said diffuse transmission layer.

8. The solar battery module of claim 5 wherein said diffuse transmission layer has an overall light transmittance of at least 20% and a haze of at least 8% in the visible spectrum.

9. The solar battery module of claim 1 wherein said photoelectric conversion section has a transparent conductive film

10. The solar battery module of claim 1 comprising a substrate made of any of light transmissive, heat resistant resins, glass and stainless steel.

11. The solar battery module of claim 1 wherein a hot-melt web having a buffer adhesive layer containing a thermosetting resin is laminated on at least one surface of a substrate made of any of light transmissive, heat resistant resins, glass and stainless steel.

12. The solar battery module of claim 11 wherein said substrate and/or said buffer adhesive layer contains a UV absorber or has a UV absorber localized on a surface thereof.

13. The solar battery module of claim 11 wherein said buffer adhesive layer contains an organic peroxide.

14. The solar battery module of claim 11 wherein the hot-melt web has a support film, and the support has a glass transition temperature of at least 65°

C. or a heat resistant temperature of at least 80°

C. prior to thermocompression bonding.

15. The solar battery module of claim 11 wherein the hot-melt web has a support film, and the support has a molecular orientation ratio (MOR) of from 1.0 to 3.0 prior to thermocompression bonding.

16. The solar battery module of claim 11 wherein the organic peroxide has a decomposition temperature of at least 70°

C. at a half life or 10 hours prior to thermocompression bonding.

17. The solar battery module of claim 1 further comprising a protective coating film having light transparency and heat resistance on said photoelectric conversion section.

18. A solar battery module further comprising a layer of the hot-melt web of claim 11 on said protective coating film.

19. A watch comprising the solar battery module of claim 1.