Charged EVs | Wevo developed new potting compounds and gap fillers for EV inverters

German adhesives and sealants producer Wevo-Chemie has developed thermally conductive potting compounds and hole fillers that concentrate on warmth elimination and guarantee part mechanical stability in EV energy electronics.

The epoxy resin- and silicone-based supplies shield in opposition to electrochemical corrosion and supply dependable electrical insulation resulting from their low ion content material. Wevo has optimized the circulation properties of those potting compounds to fill small gaps regardless of their excessive thermal conductivity and filler content material. By adjusting the glass transition temperature and utilizing particular fillers, supplies will be made to resist –40° C to +180° C inverter temperatures, stopping cracking throughout thermal shocks, cycles and damp-heat storage. 

Wevo has optimized the adhesion of the silicones to metals similar to aluminum, in order that the potting compounds can be utilized within the space across the part housing or for parts similar to coils or printed circuit boards (PCBs). The supplies will be optimized for particular functions, making them appropriate for digital management items (ECUs) and DC/DC converters.

“If full encapsulation of the inverter will not be doable or not fascinating, a neighborhood connection will be established to the part housing or the cooling system utilizing hole fillers developed by Wevo,” the corporate mentioned.

Supply: Wevo-Chemie