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Precautions for the use and maintenance of lithium-ion power batteries
Basic battery requirements
1) In any case, the terminal voltage of the single battery must be detected in real time when
testing or using the battery. It is strictly forbidden to perform a series charge-discharge test on
the battery pack without a management system or a protection board, so as to avoid the
overcharge or overdischarge of the battery.
2) Battery management system: In order to ensure the safe and effective use of the battery and
maximize the service life of the battery, lithium battery products should be equipped with a
special power lithium battery management system (BMS) and a special lithium battery charger.
When a small number of small-capacity batteries are used in series, a reliable lithium battery
protection board can also be used. The battery management system (BMS) is as follows:
BMS parameter
configuration
Overcharge
protection voltage
3.75V
Undervoltage
protection voltage
2.7V
Maximum
charging current
200A
Overdischarge
protection voltage
2.2V
Overcharge
release voltage
3.67V
Overtemperature
protection
temperature
60
℃
Undervoltage
release voltage
2.8V
Overdischarge
release voltage
2.6V
3) In the process of using the battery, it is strongly recommended to adhere to the principle of
shallow charging and shallow discharging. The power is the most cost-effective when the
power is between 30% and 100%. When the open circuit voltage of the single battery drops
to 3.0V, the actual charge is less than 10%, charge the battery pack in time;
4) When testing or using the vehicle, you should always pay attention to observe the remaining
power of the battery pack. Do not tow the vehicle back for charging when the power is
exhausted. During the towing, auxiliary system like the on-board DC/DC (power supply for
lights, wipers, etc.), steering assist and brake assist are still consuming power, and the battery
will be over-discharged when the trailer is far away;
5) The high-voltage safety protection work of the battery pack must be done in place, the main
circuit of the driving power and the low-voltage electrical circuit (including the vehicle body)
must be properly isolated, and DC air circuit breakers and fast DC fuses with reliable
performance should be selected:
