Title:
BACKSHEET FOR PHOTOVOLTAIC ASSEMBLY AND MANUFACTURING METHOD THEREFOR, AND PHOTOVOLTAIC ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2022/116893
Kind Code:
A1
Abstract:
The present application provides a backsheet for a photovoltaic assembly and a manufacturing method therefor, and a photovoltaic assembly. The backsheet for the photovoltaic assembly comprises: a metal substrate layer; a chemical conversion layer disposed on a first surface of the metal substrate layer; a transition layer disposed on the surface of the chemical conversion layer away from the metal substrate layer; an adhesive layer disposed on the surface of the transition layer away from the chemical conversion layer; an insulating layer disposed on the surface of the adhesive layer away from the transition layer; and a passivation layer disposed on a second surface of the metal substrate layer. In embodiments of the present application, by disposing the passivation layer on the second surface of the metal substrate layer, the corrosion of the second surface of the metal substrate layer can be avoided; and by disposing the chemical conversion layer, the transition layer, and the adhesive layer between the metal substrate layer and the insulating layer, the adhesion between the insulating layer and the metal substrate layer can be improved, thereby preventing the separation of the insulating layer from the metal substrate layer under long-term use.
Inventors:
TAN XIAOCHUN (CN)
Application Number:
PCT/CN2021/133233
Publication Date:
June 09, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
LONGI SOLAR TECH CO LTD (CN)
International Classes:
H01L31/049; B32B7/12; B32B15/085; B32B15/088; B32B15/09; B32B15/18; B32B27/28; B32B27/32; B32B27/34; B32B27/36; B32B33/00; H01L31/048
Foreign References:
| CN112563360A | 2021-03-26 | |||
| CN209896079U | 2020-01-03 | |||
| CN105658844A | 2016-06-08 | |||
| CN107053779A | 2017-08-18 | |||
| JP2009275284A | 2009-11-26 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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