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Electric Vehicles Research
Posted on April 1, 2013 by  & 

Lithium-ion battery cell for stop-start/micro-hybrid vehicles

During the past decade, driven largely by an effort to meet legislated carbon emissions reduction goals for vehicle fleets, automakers have introduced technologies that enable internal combustion engines (ICEs) to turn off automatically when vehicles are stopped. These stop-start vehicles are also known as micro hybrids, idle stop vehicles, and a variety of names branded by automakers, and in many cases the technology is bundled with other fuel efficient technologies. These vehicles can offer significant reductions in fuel consumption and CO2 emissions, although the actual savings depend heavily on the drive cycle.
Stop-start vehicles require more robust batteries and starter systems than are found in internal combustion engine vehicles and are priced at a small premium over ICEs but considerably less than hybrid vehicles.
Energy Innovation Group Ltd. (EIG) a South Korean manufacturer of large format lithium ion battery cell technology has developed an LTO cell targeting and enabling applications requiring high charge/discharge rates, long cycle life, and broad operating temperature range.
The 5Ah LTO prismatic pouch cell, EIG Model T005, is the first of a family of LTO cells designed specifically for markets ranging from the growing 12V and 48V stop-start micro-hybrid vehicle market to specialized telecom and military markets. The T005 cell is expected to begin shipping in pilot quantities in the second half of 2013.
"We are pleased to be able to leverage EIG's deep expertise in designing high-power lithium cells to be able to offer the T005 specifically to those tier-1 transportation battery suppliers looking to enable their own viable 12V and 48V battery solutions for stop/start micro-hybrid applications. We believe that many of the technologies currently being discussed for stop-start vehicle applications do not provide sufficient dynamic charge acceptance or cycle life to make them economically viable for such a demanding application," said Hee Taek Kim, CEO of EIG Ltd.
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