Solar power panel factory and process for manufacturing frame-less encapsulated photo-voltaic (PV) solar power panels by encapsulating solar cell modules within optically-transparent epoxy-resin material coating phenolic resin support sheets

• US 10,522,701 B2
• Filed: 05/15/2018
• Issued: 12/31/2019
• Est. Priority Date: 03/14/2018
• Status: Active Grant

• Current Assignee: National Mechanical Group Corp.
• Original Assignee: National Mechanical Group Corp.
• Inventors: Campanella, Nicholas B.
• Primary Examiner(s): Mershon, Jayne L
• Application Number:
  US15/979,520
• Publication Number:
  US 20190288140A1
• Time in Patent Office: 595 Days
• CPC Class Codes: H01L 31/0201 comprising specially adapted module bus-bar structures
• CPC Class Codes: H01L 31/048 Encapsulation of modules
• CPC Class Codes: H01L 31/0481 characterised by the composition of the encapsulation material
• CPC Class Codes: H01L 31/049 Protective back sheets
• CPC Class Codes: H01L 31/18 Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• CPC Class Codes: H02S 40/34 comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
• CPC Class Codes: Y02B 10/10 Photovoltaic [PV]
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy
• CPC Class Codes: Y02P 80/20 using renewable energy

Abstract

A solar panel factory system and process for manufacturing a frame-less epoxy-resin encapsulated solar panel by encapsulating solar cell modules within optically-transparent epoxy-resin material coating phenolic resin support sheets. During solar panel manufacture, an optically transparent epoxy-resin coating is applied over an array of photo-voltaic (PV) solar cell modules mounted on a sheet of phenolic resin, and supported in a layer of adhesive coating is applied as a liquid with a viscosity and a thickness such that the thickness of the layer of adhesive coating is substantially equal to the thickness of the PV solar cell modules, and cured to a sufficient hardness. The epoxy-resin coating applied over the array of PV solar cell modules, and the cured layer of adhesive coating, reinforce the strength of the sheet of phenolic resin, particularly around the perimeter of the sheet of phenolic resin.

Claims

1. A method of manufacturing a frame-less epoxy-resin encapsulated solar power panel along a solar power panel production line in a solar panel factory system, said method comprising the steps of:

(a) supplying a stack of phenolic resin support sheets to a conveyor transport system of a solar power panel production line, wherein each said phenolic resin support sheet is made of non-conductive and reinforced phenolic resin material, and has a top surface and a bottom surface;

(b) applying an optically transparent layer of adhesive coating material to the top surface of one said phenolic resin support sheet;

(c) placing an array of photo-voltaic (PV) solar cell modules connected to an electrically-conductive bus bar assembly on said optically transparent layer of adhesive coating applied to the top surface of said phenolic resin support sheet,

wherein said optically transparent layer of adhesive coating material has a thickness equal to said array of PV solar cell modules so that the top surfaces of said PV photo cell modules and surrounding adhesive coating material reside in the same plane so as to form a planar surface;

(d) applying an optically transparent epoxy-resin encapsulating layer over said planar surface formed by said array of (PV) solar cell modules, said electrically-conductive bus bar assembly and said optically transparent layer of adhesive coating material;

(e) curing said optically transparent epoxy-resin encapsulating layer applied over said array of PV solar cell modules, said electrically-conductive bus bar assembly and said optically transparent layer of adhesive coating material;

(f) applying an optically transparent epoxy-resin top coating over said cured optically transparent epoxy-resin encapsulating layer, for providing self-cleaning action when wet during rain showers;

(g) curing said optically transparent epoxy-resin top coating applied over said cured optically transparent epoxy-resin encapsulating layer;

wherein a high-strength edge portion is formed all around the perimeter of said frame-less epoxy-resin encapsulated solar power panel construction, between said optically transparent epoxy-resin top coating and said phenolic resin support sheet; and

wherein said high-strength edge portion of said frame-less epoxy-resin encapsulated solar power panel construction is free of said array of PV solar cell modules and said electrically-conductive bus bar assembly so that mounting holes can be drilled through said high-strength edge portion without the risk of damaging said array of PV solar cell modules and said electrically-conductive bus bar assembly, and without the risk of compromising the strength and integrity of said frame-less epoxy-resin solar power panel construction;

(h) mounting an electrical connector to the bottom surface of said phenolic resin support sheet;

(i) testing said frame-less epoxy-resin encapsulated solar power panel construction under an artificial-sun light source, and determining that said frame-less epoxy-resin encapsulated solar power panel construction meets a set of minimum electrical and mechanical performance specifications; and

(j) packaging each said frame-less epoxy-resin encapsulated solar power panel construction produced from said solar power panel production line of said solar panel factory system.

2. The method of claim 1, wherein said optically transparent epoxy-resin top coating is applied over said optically transparent epoxy-resin layer at a dry film thickness (DFT) of at least 0.1 mm.

3. The method of claim 1, which further comprises drilling said mounting holes through said high-strength edge portion of said frame-less epoxy-resin encapsulated solar power panel construction so as to allow for the mounting of said frame-less epoxy-resin encapsulated solar power panel construction in diverse environments including, horizontal and inclined rooftops, and vertical wall mounting applications.

4. The method of claim 1, wherein said photo-voltaic (PV) solar cell modules are made from various photo-voltaic technologies selected from the group consisting of (i) mono-crystalline or multi-crystalline silicon photo-voltaic solar cell modules, (ii) copper indium gallium selenide (CIGS) photo-voltaic solar cell modules, (iii) cadmium telluride (CdTe) photo-voltaic solar cell modules, (iv) perovskite photo-voltaic solar cell modules, and (v) organic photo-voltaic solar cell modules, and plastic photo-voltaic solar cell modules.

5. The method of claim 1, wherein said phenolic resin support sheet has a thickness between ⅛

to 3/16 inches.

6. The method of claim 1, which further comprises mounting an electrical connector junction box to said electrical connector so as to provide support for electrical power jacks for connection of electrical power cables that connect said frame-less epoxy-resin encapsulated solar power panel to an electrical power system supported within a building, house or other environment in which said frame-less epoxy-resin encapsulated solar power panel construction is installed.