Reducing greenhouse gas emissions and fossil fuel consumption from the transport sector is a major problem for governments world-wide. In Europe, for example, various governments demand automakers to decrease carbon dioxide emissions from current value of about 140 g for every 1 km driven to 95 g by 2020 and this is expected to decrease further to 75 g per km by 2025. Likewise, the Japanese government requires automakers to improve fuel economy from the present value of 15.0 to 20.3 km per L by 2015. With such requirements, part of the solution is the development of the third-generation micro-hybrid electric vehicles (micro-HEVs). These vehicles have new features that include integrated starter–generator (ISG) stop during acceleration, engine stop during coasting, and recuperation during coasting and deceleration, and will become the main stream in the near future to improve fuel economy. First-generation micro-HEVs adopted enhanced flooded batteries (EFB) or absorptive glass-mat AGM batteries. Second-generation micro-HEVs in Japan adopted EFB + Li-ion or EFB + capacitor for enhancing recuperation during deceleration. These two energy-storage systems provide very good performance, but are very expensive. Therefore, Japanese automakers require low-cost solutions for the third-generation micro-HEVs. The next-generation UltraBattery, a combined lead–acid and supercapacitor hybrid energy-storage device, has proved to have excellent high-rate, partial state-of-charge (HRPSoC) durability and charge acceptability. In this presentation, the performance of the next-generation UltraBattery will be discussed and it will be shown that the very expensive dual energy-storage system can be replaced by only one next-generation UltraBattery.
The Furukawa Battery Co., Ltd
Biography: Dr Jun Furukawa obtained a Bachelor of Science from the A-o-ya-ma-Ga-ku-in (Aoyama) University, Japan, in 1980, and received a Doctor of Engineering and Science from the Iwaki Meisei University, Japan in 2014. He joined The Furukawa Battery Company in 1980. Now he is a Senior Fellow and General Manager of the UltraBattery commercialization department. Dr Furukawa has commercialized the UltraBattery, an integrated supercapacitor/lead-acid hybrid energy-storage device for micro-HEV and renewable applications. He holds more than 100 patents. He has been awarded the Technical Development Award from The Electrochemical Society of Japan in 2009. He was a nominee for the Gaston Plante Medal in 2014. He is a Member of the Electrochemical Society (ECS) of USA and the Institute of Electrical Engineers of Japan (IEEJ).