SAE Congress '08: Q&A with Dr. Patil of Compact Power
But let's talk about the battery deal we do know about. Based on the packs currently being tested in the Volt, Dr. Patil estimated that a li-ion battery that could move an electric car 100 miles between charges would weigh about 800 pounds. This is double what the Volt's batteries weigh, but would get you 2.5 times the Volt's EV-only distance, because the Volt's batteries reserve some power for the hybrid operations. Regenerative braking can get you the rest of the way. Considering all the studies that show that most people drive well-under 50 miles a day, carrying around all that extra weight for capacity that won't often get used doesn't make a lot of sense, he said. Patil also sees the benefits of the recent CARB ZEV mandate decision. Give a listen.
In the CPI booth was the company's ER2 racer which was setting speed records back in 2002. The ER2 uses an 11 kWh li-ion battery pack and a 165 kW AC induction motor to go from 0-60 in 3.2 seconds. More details here.
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