Piezoelectricity is a renewable energy source which transforms ambient vibrations into energy. This technology is based on the property of certain bodies that become electrically polarised under the action of mechanical stress.
In the pleasure boating environment, renewable energy systems (wind turbines, solar panels or hydro generators) take up a lot of space on board and are therefore not suitable for small boats under 10 metres long. It is therefore useful to propose an alternative energy source in the form of a compact, affordable product which is integrated into the architecture of the boat and, at the same, exploits ambient vibrations.
Flow d’énergie is a portable piezoelectric battery. When thrown into the water, its cable generates energy and recharges a battery inside the product. By oscillating at the rear of the boat, the 10 metre-long piezoelectric cable supplies 30W and can be used to recharge the battery. A roller system enables to store the cable away once the battery is charged. Flow has 3 types of connectors: USB, cigarette lighter and electric plug for recharging any navigation device. The battery supplies 12V, which is the voltage used on board boats.
Manon Malatray won the “Coup de cœur” [favourite] prize, with Flow d’énergie, awarded by a panel of experts at the Maison et Objet trade fair.
This project is exhibited at Hangar 32 at “Design l’Expo”, from 28th November 2014 to 25th January 2015.