1051(fwd) AC Propulsion's new Li-Ion T-Zero makes its debut!
- Sep 1, 2003Recently posted on AC Propulsion's website.
First Drive of Li-Ion tzero
Wednesday, August 27th, the Li-Ion tzero was driven for the first
time. The 90-mile test drive included climbing to the top of Mt.
Baldy road, a 40-mile loop including a climb to 6000+ feet elevation,
and a 35-mile highway loop at 70-75 mph. At the end of the test drive
less than 1/3 of the measured battery capacity had been used. During
the test drive, the tzero battery exhibited excellent voltage
uniformity, excellent temperature distribution and control, and high
discharge rate capability. The Mt. Baldy trip gave the highest
regenerative energy recapture ratio that we have ever observed,
demonstrating the high cycle-efficiency of the cells.
The weight of the tzero is reduced to under 2000 pounds, providing
significant improvements in acceleration, handling, and efficiency. As
a complete car, the Li-ion tzero has higher specific energy, in Wh/kg,
than the RAV4 EV battery pack alone.
This first drive confirms the benefits of Li-Ion batteries,
demonstrates the usability of small, commercial, off-the-shelf Li
cells for automotive applications, and increases our confidence in the
techniques we have developed for assembling them into automotive
Testing and development of the Li-Ion tzero continue. The results so
far justify our moving forward with plans for design and development
of other vehicle applications for this technology. More extensive
test results and developments will be posted here in the coming weeks.