Connection structure for photovoltaic power generation module

Patent metadata

Field	Value
Publication number	US-9284452-B2
Application number	US-200913125675-A
Country	US
Kind code	B2
Filing date	Oct 22, 2009
Priority date	Oct 24, 2008
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

To provide a connection structure for a photovoltaic power generation module which is excellent in long-term heat resistance and which is excellent in low-temperature impact resistance even if the structure is reduced in wall thickness and size. There is provided a connection structure ( 1 ) for a photovoltaic power generation module which at least joins a photovoltaic power generation module to a cable for connecting to the photovoltaic power generation module, the connection structure for the photovoltaic power generation module comprising a thermoplastic resin composition having, as an index of long-term heat resistance, a relative thermal index (RTI) of tensile impact strength at a thickness of 1.5 mm of 115° C. or higher, and a Charpy impact strength at −40° C. of 6.5 kJ/m 2 or more.

First claim

What is claimed is:

1. A junction box for a photovoltaic power generation module, which at least joins a photovoltaic power generation module to a cable for connecting to the photovoltaic power generation module, the connection structure for the photovoltaic power generation module comprising a thermoplastic resin composition having, as an index of long-term heat resistance, a relative thermal index (RTI) of tensile impact strength at a thickness of 1.5 mm of 115 degree C. or higher, and a Charpy impact strength at −40 degree C. of 6.5 kJ/m 2 or more and 15kJ/m 2 or less,
wherein the thermoplastic resin composition comprises a (A) polyphenyiene ether, a (B) styrenic-based resin and a (C) hydrogenated block copolymer, and
the junction box has an average wall thickness of 3mm or less.

2. The junction box for a photovoltaic power generation module according to claim 1 , wherein the thermoplastic resin composition comprises a (A) polyphenylene ether, a (B) styrenic-based resin, and a (C) hydrogenated block copolymer, and
based on 100 parts by mass of a total of the (A), the (B), and the (C),
a content of the (A) is from 65 to 98 parts by mass;
a content of the (B) is from 1 to 25 parts by mass; and
a content of the (C) is from 1 to 20 parts by mass.

3. The junction box for a photovoltaic power generation module according to claim 1 or 2 , wherein the thermoplastic resin composition has a relative thermal index of 120 degree C. or higher.

4. The junction box for a photovoltaic power generation module according to claim 1 or 2 , wherein the thermoplastic resin composition has a Charpy impact strength at −40 degree C. of 7.5 kJ/m 2 or more.

5. The junction box for a photovoltaic power generation module according to claim 1 or 2 , wherein the thermoplastic resin composition has a Dart impact strength at −40 degree C. of 3.0 J or more.

6. The junction box for a photovoltaic power generation module according to claim 1 or 2 , wherein the thermoplastic resin composition has a retention of 70% or more, wherein the retention is defined as a ratio, in percentage, of the Dart impact strength at −40 degree C. after being left standing in a 90 degree C./saturated water vapor environment for 500 hours to the Dart impact strength at −40 degree C. before the standing.

7. The junction box for a photovoltaic power generation module according to claim 1 , wherein the junction box has an average wall thickness of 1 mm or more and 2.5 mm or less.

8. The junction box for a photovoltaic power generation module according to claim 1 or 2 , wherein the junction box for a photovoltaic power generation module comprises a male connector and a female connector.

9. The junction box for a photovoltaic power generation module according to claim 8 , wherein the junction box has an average wall thickness of 0.5 mm or more and 2.5 mm or less.

10. The junction box for a photovoltaic power generation module according to claim 1 , wherein the thermoplastic resin composition comprises at least one member selected from the group consisting of polyphenylene ether, polycarbonate, a polymer alloy containing polycarbonate and ABS, polybutylene terephthalate, polyethylene terephthalate, and polyphenylene sulfide.

11. The junction box for a photovoltaic power generation module according to claim 1 , wherein the thermoplastic resin composition comprises at least one member selected from the group consisting of polyphenylene ether, polycarbonate, and polyphenylene sulfide.

Assignees

• Kono Hiroyuki
• Ishii Tadayuki
• Asahi Kasei Chemicals Corp

Inventors

• Kono Hiroyuki
• Ishii Tadayuki

Classifications

• C08L71/12 Primary

  Polyphenylene oxides · CPC title

• C08L25/06

  Polystyrene · CPC title

• H02S40/34 Primary

  comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes · CPC title

• C08L53/025

  modified · CPC title

• C08L53/005

  Modified block copolymers · CPC title