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ADI | Energy Storage Solutions
Cosimo Carriero, Field Applications Engineer,
Analog Devices, Inc.
Battery Stack
Monitor Maximizes
Performance of Li-Ion
Batteries in Hybrid
and Electric Vehicles
EV Charging - High Power DC Charger with Storage Boost Battery
Abstract
Lithium-ion (Li-Ion) batteries are a popular
way to store energy in electric and hybrid vehicles.
These batteries offer the highest energy density
of any current battery technology, but to maximize
performance, a battery monitoring system (BMS) is
mandatory. A state-of-the-art BMS not only allows you
to extract the highest quantity of charge from your
battery pack, but also lets you manage the charge
and discharge cycles in a safer way, which results
in an extended life. Analog Devices provides a full
portfolio of BMS devices with focus on accuracy and
robust operation. Accurately measuring a battery's
state of charge (SOC) increases battery run time or
decreases weight. A precise and stable device does
not require factory calibration after PCB assembly.
Stability over time improves safety and avoids warranty
problems. A self-diagnostics feature helps reach the
right automotive safety integrity level (ASIL). A battery
pack is a challenging environment for electromagnetic
interferences (EMI), so special care has been put into
designing the data communication link in order to
ensure robust and reliable communication between the
measurement chips and the system controller. Cables
and connectors are among the main causes of failures
in battery systems, so wireless solutions are presented
here. Wireless communication designs increase
reliability and reduce total system weight, which in turn
increases mileage per charge.
