Huawei BoostLi ESM-48100B1 - Page 43

BoostLi Energy Storage Module ESM-48100B1
User Manual
5 Maintenance Guide
Issue 03 (2020-01-08)
Copyright © Huawei Technologies Co., Ltd.
37
Fault Type
Fault Generation
Condition
Possible Causes
Troubleshooting
voltage may be 3.8V.
3. The ESM voltage is
greater than 55 V.
Undervoltage
protection
1. The ESM voltage is
less than 44 V.
2. The minimum
electrochemical cell
voltage is less than
2.5 V.
1. The mains power
failure has lasted for a
long time.
2. Cells are not
consistent. The
capacity of some
electrochemical cells
deteriorates too fast or
the internal resistance
of some
electrochemical cells
is too high.
Charge high
temperature
protection
The maximum
electrochemical cell
temperature is greater
than 60°C.
1. The ESM ambient
temperature is too
high.
2. There are abnormal
heat sources around
the ESM.
Discharge
high
temperature
protection
The maximum
electrochemical cell
temperature is greater
than 65°C.
Charge low
temperature
protection
The minimum
electrochemical cell
temperature is less than
0°C.
1. The ESM ambient
temperature is too
low.
2. The heater fails to
work.
Discharge
low
temperature
protection
The minimum
electrochemical cell
temperature is less than
–20°C.