24th Apr 09
MAXWELL awarded with $13.5 million
contract to supply ultracapacitors
A China's leading transit bus manufacturer has awarded
a contract to Maxwell Technologies to supply BOOSTCAP ultracapacitor
modules to support braking energy recuperation and torque
assist functions in diesel-electric hybrid transit buses.
Maxwell has already started delivering its 48-V BMOD0165
P048 modules produced by its contract manufacturers in China.
Maxwell estimates that more than 150 hybrid buses with BOOSTCAP
ultracapacitor-based energy storage systems already are
in service, and that number is now expected to grow to nearly
1,000 by year-end.
"Ultracapacitors' efficiency in recapturing energy
from braking and their low maintenance requirements and
long operational life make them an ideal energy storage
solution for the demanding duty cycles of electric and hybrid
transit vehicles," Schramm said. "BOOSTCAP modules
have demonstrated reliable performance and high efficiency
in the first wave of vehicles that have gone into service,
and the ability to connect these modules in series to meet
various voltage requirements allows for easy integration
into virtually any type or size of heavy vehicle.
"China's leading bus OEMs have developed an array
of electric and hybrid drive systems for cleaner, more efficient,
transit buses, trolleys and other commercial vehicles,"
Schramm said. "Working with a number of them has given
Maxwell a better understanding of the requirements of the
heavy vehicle industry and enabled us to expand our presence
in the dynamic and rapidly growing Chinese market.
"BOOSTCAP modules meet transportation industry requirements
for watt-hours of energy storage and watts of power delivery
per kilogram, and are designed to perform reliably through
one million or more deep discharge cycles, or about 10 years
of operational life for most vehicles," Schramm added.
"These attributes make them a preferred energy storage
option for many types of public transit and commercial vehicles,
so heavy vehicle applications are becoming a major driver
for global growth in BOOSTCAP product sales."
To know further on BMOD0165 P048 modules visit, www.maxwell.com/ultracapacitors/products/modules/bmod0165-48-6v.asp.
Ultracapacitors store energy like batteries but only for
short duration. They have far higher energy density than
batteries due to which they are highly suitable for storing
large amount of energy for short duration. This exactly
fits the requirements of hybrid automotives, where IC combustion
engine runs at optimum efficiency to charge these ultracapacitors
(might be in combination with lead acid, NiMH or lithium
ion batteries). These charged ultracapacitors would power
the AC motor to drive the vehicle.