48V Boost Recuperation Systems - Golden Gate into the Future

Juergen Schneider

doi:10.4271/2019-01-0391

The transformation of the automotive industry will be shaped mainly by the markets North America, Europe and China, which account for more than two thirds of the yearly global car production. All three markets have challenging fuel consumption, CO₂ and emission regulations in place and under discussion, which are forcing the automotive industry to make their power train technology more efficient. But not only governmental regulations are driving the change, increasing urbanization intensifies local environmental pollution from vehicles and strains the acceptance of today’s car centric mobility.

Electrification is the highly touted magic solution, but is it fast and comprehensive enough to solve above mentioned problems? Is society - car owners, automotive industry and governments - willing to pay the high cost for electrified car technology and infrastructure within a short timeframe of 10 to 15 years? Or will so called bridge technologies like 48V BRS (Boost Recuperation Systems) be needed, which are less efficient on a single car, but effective on a broad scale and therefore in total more beneficial and affordable overall. In Europe 48V BRS are already strongly developing and beyond 2020 this technology is expected to evolve step by step into a market leading solution.

The following paper discusses the automotive environment and trends in NAFTA, Europe and China. It explains the architecture, function, operation modes and use cases of 48V BRS in combination with the ICE-based (Internal Combustion Engine) powertrain. Furthermore, the requirements on the components for optimal CO₂ cost/benefit and the software functionalities of a 48V BRS are derived and described. Future board-net requirements, driven by vehicle comfort consumers, safety systems and by autonomous driving, are discussed. Finally, an outlook of future opportunities for 48V systems is provided. This paper aims to combine market needs with technical solutions of 48V and shows a market forecast of 48V systems.

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48V Boost Recuperation Systems - Golden Gate into the Future 2019-01-0391

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