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Solar cell backsheet and solar cell module provided with same

A technology for solar cells and back sheets, applied in household appliances, other household appliances, applications, etc., can solve the problems of deterioration of solar cell elements, reduction of power generation efficiency, etc., to improve photoelectric conversion efficiency, suppress cracks, and seek heat resistance. and flexibility

Inactive Publication Date: 2013-10-16
TECHNO POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, in a solar cell module provided with a solar cell back sheet, when water, water vapor, etc. enter from the side of the solar cell back sheet, deterioration of the solar cell elements and further reduction in power generation efficiency may be caused.

Method used

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  • Solar cell backsheet and solar cell module provided with same
  • Solar cell backsheet and solar cell module provided with same
  • Solar cell backsheet and solar cell module provided with same

Examples

Experimental program
Comparison scheme
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Embodiment

[0383] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples within the range not exceeding the gist of the present invention. In addition, in the following, parts and % are based on mass unless otherwise specified.

[0384] 1. Evaluation method

[0385] The measurement methods of various evaluation items are shown below.

[0386] 1-1. Rubber content in thermoplastic resin

[0387] The total ratio of all rubber components to the total amount of thermoplastic resin in each resin layer was calculated from the composition when the raw materials for producing the thermoplastic resin composition constituting each resin layer were added.

[0388] 1-2. N-phenylmaleimide unit content in thermoplastic resin

[0389] Calculated from the composition at the time of adding the raw materials for producing the thermoplastic resin composition constituting each resin layer.

[0390] 1-3. Gl...

manufacture example 1-1

[0490] The thermoplastic resin and the colorant were mixed by a Henschel mixer at the ratio shown in Table 1. Thereafter, using a twin-screw extruder "TEX44" (model name) manufactured by Nippon Steel Works, it was melt-kneaded at a barrel temperature of 270° C. to obtain a pellet-shaped first thermoplastic resin composition (I-1) (see Table 1).

manufacture example 1-2～1-7

[0492] The first thermoplastic resin compositions (I-2) to (I-7) in the form of pellets were obtained in the same manner as in Production Example 1-1 except that the thermoplastic resin and the colorant were used in the ratio shown in Table 1 (see Table 1 ).

[0493] [Table 1]

[0494]

[0495] *1 Content relative to 100% of thermoplastic resin.

[0496] 4. Preparation of the second thermoplastic resin composition

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PUM

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Abstract

The solar cell back sheet (1) of the present invention is provided with a first resin layer (11), a second resin layer (12), a third resin layer (13) and a fourth resin layer (14) in sequence, and the first resin layer (11) is an infrared-transmitting colored resin layer, at least the second resin layer (12) is a white resin layer among the second resin layer (12) and the third resin layer (13), and the fourth resin layer (14) is For the back protection layer, the thickness HA of the first resin layer (11), the thickness HB of the second resin layer (12) and the thickness HC of the third resin layer (13) satisfy 0.4≤(HA+HC) / HB≤2.4 and 0.7 ≤HA / HC≤1.3. A water vapor barrier layer may be provided between the third resin layer (13) and the fourth resin layer (14).

Description

technical field [0001] The present invention relates to a solar cell that has a dark-colored appearance, absorbs visible light when irradiated with light, and prevents heat storage by transmitting infrared rays, improves photoelectric conversion efficiency, and is excellent in flexibility, heat resistance, and damage resistance. A back sheet; a back sheet for a solar cell excellent in flexibility, heat resistance, water vapor barrier properties, and damage resistance; and a solar cell module including the back sheet for a solar cell. Background technique [0002] In recent years, solar cells have attracted attention as energy supply means instead of petroleum, which is an energy source that forms carbon dioxide that causes global warming. Demand for solar cells is also increasing, and stable supply and cost reduction of various components constituting solar cell modules included in solar cells have been sought. In addition, there is an increasing demand for improvement in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/042
CPCY02E10/50B32B27/08B32B27/20H01L31/0481H01L31/049B32B7/12B32B25/16B32B25/20B32B27/302B32B27/304B32B27/308B32B27/32B32B27/36B32B27/365B32B2255/04B32B2255/10B32B2255/20B32B2255/205B32B2255/24B32B2255/26B32B2255/28B32B2274/00B32B2307/3065B32B2307/308B32B2307/40B32B2307/402B32B2307/412B32B2307/416B32B2307/546B32B2307/558B32B2307/584B32B2307/712B32B2307/714B32B2307/7246B32B2307/732B32B2307/734B32B2457/12Y10T428/2495B32B27/00
Inventor 渡边笃史桥本昌典
Owner TECHNO POLYMER CO LTD
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