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CAPPING OF PHOTOVOLTAIC CELLS ON SYNTHETIC SUPPORT

Objective


New photovoltaic products have been developed in the route sign field. Photovoltaic panels are incorporated into the final product. This caused problems with their size and power provision. For the first time panels were developed with the end product being the prime consideration in their design. The nature of the product determined the improvement of the panels by modifying their coating.
THANKS TO REDUCED CONSUMPTIONS OF ELECTRONIC OR ELECTRIC COMPONENTS, THE PHOTOVOLTAIC SENSORS ADDING FOR COMPLETE PRODUCTS BECOMES AVAILABLE. NEVERTHELES, THE DEVELOPMENT OF THESE APPLICATIONS IS REALIZABLE ONLY WITH AN OPTIMUM ELECTRIC ADAPTABILITY AND AN AESTHETIC INTEGRATION, WHICH ALLOW THE COMPLETE PRODUCT TO BE PROFIT-EARNING AND COMPLETITIVE. IN THE MEANING, THE EQUINOXE SOCIETY SET UP A PROGRAM FOR RESEARCH, DEVELOPMENT AND MANUFACTURING OF LOW-POWER PHOTOVOLTAIC SONSORS WHOSE MAJOR CHARACTERISTICS ARE:
- OPTIMUM RATIO SURFACE POWER,
- SYNTHETIC OR COMPOSITE SUPPORT, WHICH MAKES ANY GEOMETRIC FORM REQUIRED FOR A SUITABLE MECHANICAL INTEGRATION OF SENSORS IN THE PRODUCT'S ARCHITECTURE POSSIBLE,
- MANUFACTURING FLEXIBILITY FOR A BETTER RESPONSE TO ENERGY REQUIREMENTS (VOLTAGE, INTENSITY).
ACTUALLY FOR INCREASING THE RATIO SURFACE/POWER WE HAVE CHOOSED THE PROCESS OF "OVERLAPPING" OF CELLS. WE HAVE BY THIS METHOD A RATIO OF 11,4.10E3 W/CM2.
THESE RESULTS HAVE BEEN OBTAINED WITH 25 X 50 CELLS FROM A INITIAL 11,8 % EFFICIENCY THAT SHOWS A GOOD OCCUPATION OF SOLAR PANEL. BUT WE MEET DIFFICULTIES FOR AN INDUSTRIAL USING BEYOND 25MM BETWEEN JOINS BECAUSE THE OVERTHICKNESS OF OVERLAPPING.
AFTER SEVERAL TESTS WITH DIFFERENT SYNTHETIC MATERIALS (POLYCARBONATE, PMMA, ETC) WE HAVE OPTED FOR A MIX POLYESTER/FIBER GLASS AS BACKING AND EVA AS CAPPING. THE EXPANSION FACTOR IS 9.10. THE USED FILM ON SURFACE IS A TEDLAR WITH ON EXCELLENT TRANSFERABILITY OF LIGHT AND A GOOD BEHAVIOUR WITH UV RAYS, BUT ITS RESIN STICKING POWER IS LOW.
THE FINAL PHASE AIMS ARE:
- TILE JUNCTION ADAPTATION TO CELLS EQUAL OR GREATER THAN 50MM HIGH
- SURFACE FILM IMPROVEMENT
- SENSORS NORMALISATION
THIS PROGRAM, SUPPORTED BY THE EEC AND L'AGENCE FRANCAISE POUR LA MAITRISE DE L'ENERGIE" (AFME), HELPED BY THE UNIVERSITY OF TECHNOLOGY AT COMPIEGNE, BEGAN IN FEBRUARY 1988.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Equinoxe Production SARL
Address
80 Rue De La Mairie
60170 Cambronne-les-ribécourt
France