BoostLi Energy Storage Module ESM-48100B1
User Manual
Copyright © Huawei Technologies Co., Ltd.
− RE: EN 55032/CISPR32, Class B
Function
Status monitoring: monitors the electrochemical cell voltage and temperature as well as
the ESM voltage and current.
Alarm management: generates alarms when overvoltage, undervoltage, overcurrent,
overtemperature, or undertemperature occurs.
Protection against exceptions: protects against overvoltage, undervoltage, overcurrent,
short circuits, overtemperature, undertemperature, electrochemical cell faults, and
hardware faults.
Information reporting: provides a northbound CAN/RS485 port through which alarms
and status data are reported.
Parallel connection: Multiple ESMs can be connected in parallel. CAN communication
supports parallel connection of up to 32 ESMs, and RS485 communication supports
parallel connection of up to 16 ESMs.
Balance: supports real-time electrochemical cell balancing.
E-label: identifies the ESM using an electronic label.
Antitheft: provides the software-based antitheft function when being used with specified
Huawei power systems.
Forcible disconnection: Users can disconnect the external power supply to the PWR port
and hold down the MANUAL ON/OFF button for 5s to power off the ESM forcibly.
Maintenance mode: used for ESM replacement. Users can hold down the MANUAL
ON/OFF button for 15s to enter the maintenance mode so that the ESM can be replaced
safely and reliably.
Activation: The ESM can be activated through the PWR port, power port, and the
MANUAL ON/OFF button.
1.2 Application Scenario
The ESM provides backup power for a power system. It can be used alone or used with
lead-acid batteries to back up power.
Inside an ESM, an energy storage management unit (ESMU) monitors the status of
temperature, current, and voltage, provides protection against overvoltage, undervoltage,
overcurrent, short circuit, overtemperature, and undertemperature, and reports the ESM
running status and alarm information through a communications port that supports both the
CAN and RS485 protocol.
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