13 Dec 08
LG Chem and ST together making
Li-ion battery suitable for electric/hybrid cars
ST Microelectronics and LG Chem have unveiled details
of a new automotive battery pack that significantly extends
the potential of electric and hybrid electric vehicles (HEVs),
reducing both petrol consumption and CO2 emissions. The
new battery pack combines LG Chem's lithium ion (Li-ion)
battery technology and the battery management chip manufactured
Typically, today's HEVs use batteries based on lead acid
and Nickel Metal Hydride (NiMH) technology, which use simpler
control circuits but are heavier and operate at lower voltages.
Li-ion batteries are widely used in portable consumer electronic
equipment because they offer one of the best energy-to-weight
ratios - more than twice that of NiMH batteries - with a
very low self-discharge while not in use. However, their
use in higher power applications has so far been limited
because the charge/discharge cycle of Li-ion batteries must
be carefully managed to protect the batteries from abuse
condition. For this reason, Li-ion batteries must be combined
with sophisticated and highly reliable electronic battery-management
circuits in high-power applications.
The new Li-ion battery pack from LG Chem manages the charge/discharge
cycle by incorporating an advanced battery-management chip,
manufactured by ST, which enables safe and long-term reliability
of Li-ion battery technology at affordable cost, even in
applications as demanding as automotive powertrain systems.
"Accurate and reliable control of the battery charging
and discharging cycles makes Li-ion technology applications
the established choice for low-power consumer applications
as well as a leading contender for future high-power",
said Ph.D. MH Kim, the vice president of the Battery Research
Institute of LG Chem.
The LG Chem/ST solution reduces the cost and weight and
increases the reliability of the Li-ion battery pack, enabling
Li-ion technology to address new applications from electric
scooters and bicycles to heavy trucks.