The ADES1830/ADES1831 are multicell battery stack monitors that
measures up to 16 series connected battery cells with a lifetime total
measurement error (TME) of less than 2 mV for the ADES1830
and less than 5 mV for the ADES1831 over the full temperature
range. The measurement input range of −2 V to +5.5 V makes the
ADES1830/ADES1831 suitable for most battery chemistries and
allows measurement of voltages across bus bars. Provisions are
made for bypassing bus bars without dedicating any measurement
channels.
All cells can be measured simultaneously and redundantly with
two individual analog-to-digital converters (ADCs). The continuously
operating ADCs with a high sampling rate of 4.096 MHz allow
reduced external analog filtering and aliasing free measurement
results. Higher noise reduction can be achieved by subsequent
programmable infinite impulse response (IIR) filters.
Multiple ADES1830/ADES1831 devices can be connected in series,
permitting simultaneous cell monitoring of long, high voltage battery
strings. Each ADES1830/ADES1831 has an isolated serial port
interface (isoSPI™) for high speed, RF immune, long distance communications.
Multiple devices are connected in a daisy chain with
one host processor connection. This daisy chain can be operated
bidirectionally, ensuring communication integrity even in the event
of a fault along the communication path.
The ADES1830/ADES1831 can be powered from the battery stack
or an isolated supply. The ADES1830/ADES1831 include passive
balancing with individual pulse width modulation (PWM) duty cycle
control and up to 300 mA discharge current for each cell. Other
features include an on-board 5 V regulator, up to 9 general-purpose
inputs/outputs, and a sleep mode, where current consumption is
reduced to 4 μA.
APPLICATIONS
- Utility energy storage
- Commercial and Industrial energy storage
- Residential energy storage
- Backup battery systems
