Ostfildern-Kemnat, Germany – A polyurethane-based potting compound from Wevo is being used by Lampuga on its electric surfboards to ensure safe operation throughout their service life. This is particularly important because the electrical components are in contact with water.
The jet-powered surfboards are designed to move across the water at speeds up to 50km/h, with the 14hp motor powered by an exchangeable 3.6kWh lithium-ion battery. The latest version of the board, the Air4, is also available for rent in numerous holiday resorts.
The specially designed PU potting compound ensures the battery remains reliably sealed, even though the surfboard is immersed in corrosive salt water. Its adhesion properties were optimised to ensure a dependable connection of the cells and the control unit to the housing.
The good flow behaviour and low viscosity of the compounds gives bubble-free potting between the cells, ensuring effective thermal management and electrical insulation. The good bond means the battery can also withstand the mechanical stress resulting from a surfer on the board.
The materials are also suitable for other battery applications, Wevo said. This includes battery packs for power tools.
