Solar battery module

Inactive Publication Date: 2002-05-02
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, modern electronic equipment are at an equal performance level imposing difficulty to discriminate one as superior in performance to another and the choice of a product by the consumer often depends on the superiority of design.
As a general rule, if these structures are viewed from the exterior, most of them have a detrimental effect on the design.
It is quite difficult to eliminate the odd sensation even when a diffuse transmission layer is formed on top of the cell to provide a shield.
To render these pattern lines to be not perceivable to the view is a key factor in eliminating the odd sensation in product design caused by building in the solar battery although the conventional solar battery design lacked a careful consideration taken to allow for a freedom of product design.
Therefore, an approach of forming a selective reflecting layer and a diffuse transmission layer having both functions of diffusing and transmitting incident light as upper layers on the light-receiving surface while insuring a power generating capability failed

Method used

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Examples

Experimental program
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Example

Example 1

[0109] Preparation Process

[0110] As shown in FIG. 1, a solar better cell-forming structure comprising a lower electrode layer 2, an amorphous silicon layer 3 having a pn junction or pin junction, an insulating layer 4, and an ITO transparent electrode layer 5 formed on a flexible substrate 1 was provided with a through-hole 10 and open channels 10a by laser machining.

[0111] Next, as shown in FIG. 2, a first isolating layer 6 and a second isolating layer 7 were formed over the ITO transparent electrode layer 5 where the open channels 10a were formed. Further, as shown in FIG. 3, a wiring electrode layer 8 was formed over the first isolating layer 6 and through-hole 10.

[0112] Next, as shown in FIG. 4, after a reverse-side lead-out electrode 9 was formed if necessary, an insulating color ink which was prepared in accordance with the following insulating color resin composition 1 was applied onto the wiring electrode 8 to form an insulating color film 11.

[0113] The insulating c...

Example

[0123] Comparative Example

[0124] A solar battery cell was prepared as in Example 1 except that an insulating color resin composition 2 of the following formulation was used, following which a solar watch was similarly assembled.

4 Insulating color resin composition 2 Parts by weight Phenoxy resin (PKHH by UCC, Mn = 15400) 20 Cyclohexanone 40 Isophorone 30 High-resistance carbon black (Degussa, 4 mean particle size 25 nm) Aerosil (Degussa, 10 mean particle size 15 nm) Dispersant (oleic acid) 3 Anti-foaming agent (TSA-720 by 1 Toshiba Silicone K.K.) Leveling agent (KS-66 by Shin-Etsu 1 Silicone K.K.)

[0125] Test Method

[0126] For the flexible solar battery cell having a tone uniformed to the photoelectric conversion section and the solar watch having the cell integrated with the whitish watch dial plate in Example and the solar batter cell and the solar watch with a whitish watch dial plate in Comparative Example, "tristimulus values" and "L*a*b* color space" (representing brightness, re...

Example

Example 2

[0146] A solar battery module was prepared as in Example 1 except that a resin coating of the following composition was formed on the cell surface instead of the lamination film. The solar battery module was tested as in Example 1, finding that it had a certain effect of unifying tones and operated as a solar battery without problems.

6 Composition of resin coating Parts by weight OH-bearing fluoro-resin 20 (Lumiflon LF200F by Asahi Glass K.K., hydroxyl value 26 mg KOH / g) .gamma.-butyrolactone 40 isophorone 30 Anti-foaming agent (TSA-720 by 3 Toshiba Silicone K.K.) Leveling agent (KS-66 by Shin-Etsu 1 Silicone K.K.)

[0147] The Lumiflon resin was completely dissolved in a solvent mixture of .gamma.-butyrolactone and isophorone, and dispersed in a zirconia ball mill for 48 hours. The anti-foaming agent and leveling agent were then added to the dispersion, which was mixed for a further 2 hours. The following hot crosslinking reaction components were added.

7 Parts by weight Methy...

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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.

Description

[0001] 1. Technical Field[0002] This invention relates to solar battery modules of portable or other types as typified by electronic equipment applications having solar batteries built therein, and more particularly, to solar battery modules serving as photovoltaic devices which when integrated in equipment, provide a harmony of color, and especially of design and have a color not causing an odd sensation despite solar battery mounting.[0003] 2. Background Art[0004] Solar batteries are utilized in various electronic equipment as a power supply substitute for dry batteries. In particular, low power consumption electronic equipment such as electronic desktop calculators, watches, and portable electronic equipment (e.g., cameras, cellular phones and commercial radar detectors) can be fully driven by the electromotive force of solar batteries, so that the equipment can operate semi-permanently without a need for battery replacement. Because of the semi-permanent operation combined with ...

Claims

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Application Information

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IPC IPC(8): H01L27/142H01L31/0216H01L31/042H01L31/046H01L31/0465H01L31/048
CPCH01L31/02167H01L31/042H01L31/046Y10S136/291Y02E10/50B32B27/306B32B27/36H01L31/02H01L31/02008H01L31/022466H01L31/022475H01L31/022483H01L31/048H01L31/0465
Inventor KUBOTA, YUICHI
Owner TDK CORPARATION
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