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BEU8636-08 Datasheet(PDF) 1 Page - Aeroflex Circuit Technology

Part # BEU8636-08
Description  Balancing for 8-Cell Battery Cell Voltage Monitoring and Telemetry Reconditioning Load Control Cell Bypass Relay Drivers
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Manufacturer  AEROFLEX [Aeroflex Circuit Technology]
Direct Link  http://www.aeroflex.com
Logo AEROFLEX - Aeroflex Circuit Technology

BEU8636-08 Datasheet(HTML) 1 Page - Aeroflex Circuit Technology

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SCD8636-08 Rev A
BEU8636-08
Cell Management Electronics for Lithium-Ion Battery
Description
The Aeroflex 8636-08 is a Lithium-Ion cell
balancing system. It controls the balancing
of one battery consisting of a series stack
of Lithium-Ion cells to ensure that each cell
is precisely charged to its proper level of
energy
and
to
monitor
each
cell's
operational voltage.
The cell balancing circuitry uses a set of
bilateral DC-DC converters which tie each
cell of a battery to a common share bus.
Cell charge is distributed among the
multiple cells so that the charge of each
cell
is
automatically
matched
to
the
average charge of the other cells.
Features
Cell Balancing to within ±5.0mV
Cell Voltage Monitoring Accuracy
±10.0mV (±20.0mV Space Mission Life)
Total Battery Voltage Monitoring
Accuracy ±0.3% of Full Scale
Supports 8 Lithium-Ion battery cells in
series.
Battery Drain Current at Balance
15mA maximum
Discrete output lines for critical signaling
with user definable thresholds:
Overvoltage Protection 4.40V typ
Cell Voltage High
4.20V typ
Cell Voltage Low
3.20V typ
MIL-STD-1553B telemetry for data
logging and monitoring
Safety
The
safety
of
Lithium-Ion
battery
technology requires that extreme care be
taken in the provisions made for cell
charging and cell monitoring.
Precision measurements of each of the
individual cell voltages in the battery stack
and precise charge balancing to each
individual cell are critical.
The
Aeroflex
8636-08
provides
the
necessary
precision
of
control
and
monitoring to ensure that safety.
Discrete logic outputs are provided for
critical signaling, enabling the user to
initiate
load
shedding
and/or
to
halt
charging.
Low operating losses enable continuous
operation. Continuous balancing provides
maximum protection against any one cell
becoming overcharged.
Cell Bypass Relay Drivers
Reconditioning Load Control
Cell Voltage Monitoring and Telemetry
www.aeroflex.com/BEU
March 3, 2008
Balancing for 8-Cell Battery


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