The new 48 V battery design launched by MAHLE Powertrain at the Future Powertrain Conference in February 2019 reportedly boosts the performance of mild hybrid road vehicles. The engineering services company, part of the MAHLE group, has designed and developed a working prototype battery to showcase the potential for the technology.
“The draw of a 48 V system is that it offers similar fuel economy benefits to high-voltage systems, but at a much lower cost. However, we quickly saw that the architecture is inherently limited by battery module compromises necessitated by cost and packaging constraints,” explained Mike Bassett, MAHLE Powertrain’s Chief Engineer for Research and Advanced Engineering. “We have carried out extensive studies into the requirements of a 48 V system to establish an optimal balance of the powertrain components, and our analysis has identified a pathway to develop an MHEV that is able to provide CO2 benefits of between 12 and 15%.”