Photovoltaic module

• US 4,830,038 A
• Filed: 01/20/1988
• Issued: 05/16/1989
• Est. Priority Date: 01/20/1988
• Status: Expired due to Fees

• Current Assignee: Siemens Solar Industries L.P. (Siemens AG)
• Original Assignee: Atlantic Richfield Company (BP PLC)
• Inventors: Beze, Norman L., Anderson, A. Jerome
• Primary Examiner(s): Weisstuch, Aaron
• Application Number:
  US07/145,931
• Time in Patent Office: 482 Days
• Field of Search: 136/251, 136/259
• US Class Current: 136/251
• CPC Class Codes: B29C 45/14336 Coating a portion of the article, e.g. the edge of the article B29C45/14573 and B29C45/14598 take precedence
• CPC Class Codes: B29C 45/14418 Sealing means between mould and article
• CPC Class Codes: B29C 67/246 Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM] casting monomers B29C39/006, mixing construction B29B7/74
• CPC Class Codes: B29K 2709/08 Glass
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10091 thermally hardened
• CPC Class Codes: B32B 17/10293 Edge features, e.g. inserts or holes
• CPC Class Codes: H01L 31/02008 for solar cells or solar cell modules
• 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: 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

Abstract

A photovoltaic panel is supported, sealed and isolated from the environment by being encased in a reaction injection molded elastomer which encapsulates the back, sides and a portion of the front side of the photovoltaic panel.

Claims

1. A photovoltaic module comprising:

a panel having front and back sides and edges forming a perimeter and at least one photovoltaic cell capable of converting radiation incident the front side of the panel to electrical energy; and

a unitary, reaction injection molded elastomer partially encapsulating the panel and forming a seal against a portion of the front side of the panel bordering the perimeter, continuing around the perimeter and encapsulating the entire back side of the panel.

2. The photovoltaic module of claim 1 wherein the panel further includes means for establishing external electrical connection to the at least one photovoltaic cell including an internal portion electrically connected to the cell and an external portion extending from the panel, and the unitary elastomer further encapsulates the internal portion of the connecting means.

3. A photovoltaic module comprising:

a panel having (a) front and back sides and edges forming a perimeter, (b) at least one photovoltaic cell capable of converting radiation incident the front side of the panel to electrical energy, and (c) means for establishing external electrical connection to the at least one photovoltaic cell, including an internal portion electrically connected to the at least one cell and an external portion extending from the panel; and

a unitary, reaction injection molded elastomer encapsulating the entire back side and perimeter edges of the panel and forming a seal against a portion of the front side of the panel bordering the perimeter, the unitary elastomer further encapsulating the internal portion of the terminal means.

4. A photovoltaic module comprising:

a first sheet having front and back sides, and edges forming a perimeter, and at least one photovoltaic cell capable of converting radiation incident the front side of the sheet to electrical energy;

a second sheet disposed parallel to the first sheet and adjacent the back side thereof;

a unitary, reaction injection molded elastomer disposed between the back side of the first sheet and the second sheet, the elastomer partially encapsulating the first sheet, forming a seal against a portion of the front side of the first sheet bordering the perimeter, continuing around the perimeter of the first sheet and sealing against at least a portion of the second sheet.

5. The module of claim 4 wherein the second sheet has front and back sides and edges forming a perimeter, and the front side of the second sheet is secured to the back side of the first sheet by the reaction injection molded elastomer, the elastomer further encapsulating the edges of the second sheet.

6. A photovoltaic module comprising:

a first sheet having (a) front and back sides and edges forming a perimeter, (b) at least one photovoltaic cell capable of converting radiation incident the front side of the sheet to electrical energy, and (c) means for establishing external electrical connection to the photovoltaic cell, including an internal portion electrically connected to the cell and an external portion extending from the sheet;

a second sheet, having front and back sides and edges forming a perimeter, the second sheet being disposed parallel the first sheet and adjacent the back side thereof; and

a unitary, reaction injection molded elastomer (a) encapsulating the perimeter edges and a portion of the front side of the first sheet bordering the perimeter, (b) disposed between the back side of the first sheet and the front side of the second sheet, (c) encapsulating the edges of the second sheet, and (d) further encapsulating the conductive portion of the terminal means.

7. A photovoltaic module comprising:

a first sheet having front and back sides and edges forming a perimeter and at least one photovoltaic cell capable of converting radiation incident the front side of the sheet to electrical energy;

a second sheet, having front and back sides and edges forming a perimeter, disposed parallel to the first sheet and adjacent the back side thereof; and

the first and second sheets being joined by a unitary, reaction injection molded elastomer disposed between the back side of the first sheet and the front side of the second sheet, encapsulating the perimeter edges and a portion of the front side of the first sheet bordering the perimeter, and continuing around the perimeter edges of the first sheet and encapsulating the edges of the second sheet.

8. The module of claim 8 which further includes means for establishing external electrical connection to the photovoltaic cell, including an internal portion electrically connected to the cell and an external portion extending from the first sheet, and wherein the internal portion of the terminal means is further encapsulated in the unitary, reaction injection molded elastomer.