Evaira EMS is International Rectifierís advanced-algorithm Energy Management System
for heavy duty battery applications. This solution easily scales to both high cell-count
battery packs and high current applications, enhancing battery pack performance and
extending battery pack service life for electric and hybrid electric platforms in both automotive
and heavy industrial market sectors.
Evaira EMS monitors the characteristics of each individual cell while the battery is in operation
(discharge mode) and dynamically adjusts its relative loading to match its capacity
using a process called Rapid-Bypass. Advanced algorithms are employed, performing
SOC calculations based on voltage levels, discharge rates, coulomb counting, and pack
SOH, which are compensated for temperature passed through Kalman filters. This capability
gives the battery pack designer control to make trade-offs between pack capacity,
service life, discharge time, and cost parameters.
Designed to maximize convenience for the system integrator, Evaira EMSís telematic features
support remote statistics, including real-time pack voltage, current, ambient temperature,
state-of-charge (SOC), state-of-health (SOH), amps expended, and operating
time through its integrated external interfaces. The unit has isolated digital I/O expansion
lines available for custom applications. These can be used to drive indicators, turn on or
off chargers, remote fans, etc. Communications interfaces are also robust, being tolerant
to EMI generated in high-current and high-voltage applications.
|Discharge and charge monitoring and cutoff|
|Supports systems up to 700V with unlimited number of modules|
|Real-time state-of-charge calculation|
|Statistical logging using non-volatile memory|
|SAE J1772 control pilot, proximity detection, HV isolation detection circuitry|
|CANbus 2.0b, Ethernet and RS232 communication interfaces||
|Real-time continuous analysis of cell SOH|
|Rapid-bypass leveling techniques are used to actively balance cells|
|Pack wear-levelling extends pack operating life|
|Robust, EMI resistant system communication|
Evaira EMS provides the battery pack designer the freedom to make trade-offs between battery pack service
life, cycle times, and usable capacity without necessarily incurring cost penalties.
Uniform aging of the cells within a battery pack, achieved through Evaira EMSís wear-leveling algorithms, significantly extends the service life of high cell-count battery packs.
For sales enquiries contact: Evaira Sales Team.