Browse Publications Technical Papers 2019-01-0391

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

Automotive technology 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 partly challenging fuel consumption, CO2 and emission regulations in place and under discussion, which are forcing the automotive industry to improve their power train technology. 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 time frame of 10 to 15 years? Or will most likely so called bridge technologies like 48V 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 the state of the art 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 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. The paper aims to combine market needs with technical solutions of 48V and shows a market forecast of 48V systems.


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