10.06.2026
Interview with ef cooling on the joint “E-Mobility Project”
AVS Römer cooling technology components for the future of e-mobility
ef cooling, a long-standing partner and customer of AVS Römer, has stood for innovative, customised solutions for generations and produces market-oriented, technologically and qualitatively sophisticated cooling devices and systems. For the new generation of cooling technology for e-mobility, ef cooling needed reliable fluid technology components. Together with AVS Römer, the expert in fluid technology solutions, ef cooling launched the “E-Mobility Project” in 2020.
Following the intensive collaboration over the past few years, we asked Daniel Bärtschi, Managing Director and CEO of ef cooling, and Paolo Pezzani, Project Manager, a few questions.
The Interview
AVS Römer: What challenges do you foresee for the coming years?
Daniel Bärtschi: The global market for DC fast-charging stations is growing rapidly (>20% CAGR until 2030), driven by government subsidy programmes, CO₂ regulations and OEM initiatives. Systems ranging from 150 kW to 350+ kW are increasingly becoming the standard, particularly along long-distance transport routes.
AVS Römer: What technological developments can we expect in the industry?
Daniel Bärtschi: The “Megawatt Charging System” is aimed at lorries and buses with charging capacities of up to 1–3 MW. Extremely high currents are involved, which necessitates the most advanced cooling design (currently only achievable with liquid cooling).
AVS Römer: How did the collaboration with AVS Römer come about?
Daniel Bärtschi: In our search for precise connecting elements, we drew on our past experience with AVS Römer to analyse the requirements for the new product, which enabled us to find exactly the right solution.
AVS Römer: What do you appreciate about working with AVS Römer?
Daniel Bärtschi: AVS Römer is flexible and uncomplicated, and delivers reliably, even during the Corona period.
AVS Römer: Tell us a little about the last joint project with AVS Römer.
Paolo Pezzani: Our collaboration with the AVS Römer team involved direct, daily communication. Initially, we used standard parts from the catalogue. Over time, we developed increasingly complex solutions together that were tailored precisely to our application.
AVS Römer: What particular challenges did you face, and how were they solved?
Paolo Pezzani: The biggest challenges had to do with the materials and how well they cope with the liquid used at very different temperatures. We carried out a number of tests under realistic conditions to try out other materials and ultimately put them to successful use.
AVS Römer: Is there already a new project in the pipeline? If so, can you tell us anything about it yet?
Daniel Bärtschi: Yes, we are developing the next generation of cooling devices to keep pace with market developments.
AVS Römer: Thank you very much for the interview. We look forward to your next projects!
