|The 12V, 8.5 Ah prototype UltraBattery for HEVs.|
A hybrid electric test vehicle equipped with a CSIRO UltraBattery system (earlier post) recently passed 100,000 miles (161,000 km) on the test track. The UltraBattery combines an asymmetric supercapacitor and a lead acid battery in a single unit, creating a hybrid car battery that lasts longer, costs less and is more powerful than current technologies used in hybrid electric vehicles (HEVs).
In comparison to conventional Valve-Regulated Lead Acid (VRLA) batteries, the UltraBattery shows superior input and output power through a wide state of charge (SOC) range and partial state of charge (PSOC) life.
CSIRO, the Commonwealth Scientific and Industrial Research Organization, is Australia’s national science agency.
Previous tests show the UltraBattery has a life cycle that is at least four times longer and produces 50 per cent more power than conventional battery systems. It’s also about 70 per cent cheaper than the batteries currently used in HEVs.—David Lamb, Energy Transformed National Research Flagship
The UltraBattery also has the ability to provide and absorb charge rapidly during vehicle acceleration and braking, making it particularly suitable for HEVs, which rely on the electric motor to meet peak power needs during acceleration and can recapture energy normally wasted through braking to recharge the battery.
Over the past 12 months, a team of drivers has put the UltraBattery to the test at the Millbrook Proving Ground in the United Kingdom, one of Europe’s leading locations for the development and demonstration of land vehicles.
The UltraBattery test program for HEV applications is the result of an international collaboration. The battery system was developed by CSIRO in Australia, built by the Furukawa Battery Company of Japan and tested in the United Kingdom through the US-based Advanced Lead-Acid Battery Consortium.
UltraBattery technology also has applications for renewable energy storage from wind and solar. CSIRO is part of a technology start-up—Smart Storage Pty Ltd—that will develop and commercialize battery-based storage solutions for these energy sources.