SC
SC
SC
SC Battery
Battery
Battery
Battery and
and
and
and Charging
Charging
Charging
Charging System
System
System
System
- 8 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Test
Test
Test
Test
1. Fault diagnosis of Battery
Fault
Fault
Fault
Fault Fault
Fault
Fault
Fault symptoms
symptoms
symptoms
symptoms Cause
Cause
Cause
Cause analysis
analysis
analysis
analysis Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
Improper
electrolyte filling
①
Peculiar smell of electrolyte
② Density (proportion) is above
1.300 dt
③
Density is about 1.100 dt after filling.
④ Liquid color is light and whitish.
①
Impure electrolyte
② Too high ratio of electrolyte
③ Insufficient density
④ Do not fill pure water
①
Replace with a new battery
② Adjust the density and carry
out boost charge
③
After changing the
electrolyte , adjust charging
with acid of 1.400 dt
Sulphating of
pole plate
① Excessively low battery capacity in
discharging
②
Too fast voltage descent speed in
discharging
③ Early bubble generation in charging
④ Too fast and high voltage rise in
charging
⑤
There are white granules and spots
on pole plate surface.
① Insufficient charging time and too
long service time
②
Too long storage of battery with
electrolyte and no timely boost
charge
③
Battery is in the status of liquid
loss and the exposure time of
terminal cluster is too long.
④
Too high electrolyte density
⑤ Too high electrolyte temperature
⑥
Impure electrolyte
① Overcharge method
②
Repetitive charging method
③ Washing treatment
④
Replace with a new battery
Battery cell
electrolyte
leakage
①
Low voltage
② When connecting battery cells are
tilted, electrolyte flows.
③
There is boiling in discharging.
1 Electrolyte flows among battery
cells and cracks on battery case
2 There is vibration in
transportation.
③ There is vibration in vehicle
running.
④
There are sparking and implosion.
⑤ The heat seal is not firm.
①
Repair or replace the case
② Replace with a new battery
Excessive
shedding of
active material
①
Excessive sediments at the battery
bottom
② Excessive low battery capacity
③
Perpetual red brown of cell wall and
operating bolt
④
Red brown electrolyte
⑤ The electrolyte is reddish and there
is pulpy shedding of pole plate
active materials, separators are in
softening state and negative pole
plate active materials are softening
expansion.
⑥
Massive shedding
①
Too high set valve of vehicle
circuit regulator
② Too large current in charging and
too long charging time
③ Too large discharge capacity and
too long discharge time
④
High temperature and long service
time due to long-term vehicle
running
⑤
Unqualified pole plate
manufacture
①
Clean the sediments with
washing method and charge
it for reuse
②
Replace with a new battery
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