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Alarm
Alarm
Sever
ID
Name
ity
20
Lithium
Minor
battery
high
tempera
ture
protecti
on
21
Lithium
Minor
battery
low
tempera
ture
protecti
on
23
Lithium
Minor
battery
low
voltage
protecti
on
Clearance
Trigger
Condition
Condition
The cell
•Charge high
temperatur
temperature
e drops
protection: The
below the
maximum cell
protection
temperature is
threshold.
greater than
60°C.
•Discharge high
temperature
protection: The
maximum cell
temperature is
greater than
65°C.
The cell
•Charge low
temperatur
temperature
e rises
protection: The
above the
minimum cell
protection
temperature is
threshold.
less than 0°C.
•Discharge low
temperature
protection: The
minimum cell
temperature is
less than –20°C.
The cell
The lithium
voltage and
battery voltage is
battery
less than 44 V.
string
The minimum
voltage rise
cell voltage is
above the
less than 2.5 V.
respective
protection
thresholds.
19
Impact
Suggestion
on the
System
The
Possible cause: The
internal
ambient temperature
switch
of the lithium battery
circuit of
is too high. There are
the lithium
abnormal heat sources
battery is
around the lithium
disconnect
battery.
ed, and
Measure: If the lithium
the battery
battery cannot be
cannot be
recovered due to
charged or
protection against
discharged
abnormality, contact
.
local Huawei
engineers to rectify
the fault.
The
Possible cause: The
internal
ambient temperature
switch
of the lithium battery
circuit of
is too low. The heater
the lithium
cannot work properly.
battery is
Measure: If the lithium
disconnect
battery cannot be
ed, and
recovered due to
the battery
protection against
cannot be
abnormality, contact
charged or
local Huawei
discharged
engineers to rectify
.
the fault.
The
Possible cause: The
internal
mains power has
switch
failed and not been
circuit of
recovered for a long
the lithium
time. The cell
battery is
consistency is
disconnect
abnormal. The
ed, and
capacity attenuation is
the battery
too fast or the internal
cannot be
resistance is too large.
charged or
Measure: If the lithium
discharged
battery cannot be
.
recovered due to
protection against
abnormality, contact
local Huawei
engineers to rectify
the fault.
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