Alliance Intelligent Battery Series
TM
User’s Guide
© 2020 American Battery Solutions Inc. All rights reserved. The data herein is intended as a guide and does not reflect the specification range for any particular property of this
product. Such data is based upon analysis of representative samples and not the actual product shipped. We based the information on data believed to be reliable on the date
compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, the merchantability, fitness for a particular purpose, freedom from patent
infringement, suitability, accuracy, reliability, or completeness of this information or the products, materials or processes described.
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drop to 0 volts. Terminals will be allowed to reconnect once the voltage has increased
above 2.78 volts for 20 seconds.
Slight differences in the cells’ capacity lead to differences between the cell voltages,
especially at low states of charge. In such a case, one cell may trip the UVP
protection before the others do. When this happens, the voltage measured at the
battery terminals may be higher than 42 volts.
The Alliance Intelligent Battery Series™ battery supports 3 level of under-Voltage
protection.
1.
Undervoltage Warning
– Undervoltage Warning sets a warning flag if any of the
Battery cell voltage goes below Minimum Discharge Voltage. This notifies the user
to take appropriate actions and use the battery efficiently without opening the FETs.
2.
Undervoltage Moderate
- Undervoltage Moderate flag is set if any of the Battery cell
voltage goes further below Minimum Discharge Voltage. This fault put the pack is
low power mode. This helps the user the take appropriate actions and use the
battery efficiently without opening the FETs.
3.
Undervoltage Severe
– Undervoltage Severe protections is set if any of the Battery
cell voltage goes below Discharge Under Voltage Protection limit. Setting this fault
opens the FETs. This helps battery from protecting itself from deep discharge
conditions. For further details, refer to Table 15: Alliance Intelligent Battery Series™
Event Matrix.
Smart Charger Support
Smart charger technologies require the presence of a terminal voltage before
supplying a charge current. To support smart chargers when in a protection state (i.e.
Under Voltage Protection (UVP) the Alliance Intelligent Battery Series™ will present a
current limited terminal voltage. When there is no charger or load connected, there is
no current flowing, so the circuit allows the terminals to show the actual battery voltage.
This terminal voltage can be measured with a multi-meter or other high impedance
