Electronic Refrigerant Valves for Electric Vehicles

The article explores the increasing demands for thermal management in plug-in hybrid and battery electric vehicles, leading to the development of various electronic refrigerant valves. It discusses the challenges posed by per- and polyfluorinated alkyl compounds and the need for valves designed for per- and polyfluorine-free refrigerants. The text classifies different valve types based on their functional scopes and technical-economic aspects, highlighting the trend towards integrated valve assemblies and manifolds. It also delves into the use of innovative actuation methods, such as electronically controlled Shape Memory Alloy actuators, for NVH optimization and lightweight design. The article further addresses the preparation for alternative refrigerants like R290 and R744, emphasizing the need for adaptations in heat pump architectures. Throughout, the text underscores the importance of efficient and cost-effective thermal management solutions in the evolving landscape of electric vehicles.