When inspecting and maintaining the power supply system, you must wear
insulating gloves, insulating shoes and insulating tools. Under no circumstances
can you contact the positive and negative poles of the battery at the same time.
Tools required for insulation detection: 500V megohmmeter, 800V multimeter,
1000A clamp meter, insulating tools, insulating gloves, etc. The testing instrument
can be used only after it is confirmed to be in good working condition, so as to
avoid high voltage accidents caused by internal problems of the instrument.
Preparation Before Startup
Observe whether the shell of the battery box has cracks, liquid leakage and other
phenomena, and contact the supplier in time if any.
· Confirm that the SOC of the battery is above 30%, the total voltage of the battery
system is greater than 510V (that is, the average voltage of the single battery is
greater than 3.05V), and the single voltage is not lower than 2.5V; the locking
status signal panel displays normally without alarm.
· Check the instrument and confirm that the battery status information is displayed
normally and there is no alarm content.
Detailed Rules for Use and Maintenance
The power supply system of the vehicle has both charging and fast charging
modes. Charging mode: when the SOC of the power supply system is lower than
20%, the vehicle shall be charged in time according to the charging regulations.
When there is no high voltage output at the positive and negative poles of the
power supply system, and the temperature and voltage data of the single battery
are not uploaded to the instrument or intelligent display screen, please notify the
professional technicians for diagnosis, and do not open the battery box and the
main controller BMU of the battery management system without authorization.
When the vehicle cannot be driven for a long time, the battery power (SOC)
displayed by the instrument shall be kept at 30%~50%: the storage environment
shall be ventilated, dry, free from direct sunlight, rain, and heat sources, and the
impact and extrusion of sharp objects shall be avoided.
After the vehicle drives for every 1-2 months, it is necessary to check whether the
high-voltage cables connected between the battery boxes are free of scratches,
damages and metal leakage, and whether the bolts and nuts of various fasteners
on the battery box are loose. It is important to check whether the nuts fixing
the high-voltage positive and negative poles at the rear of the box are loose (if
any, tighten them with a torque of 24~26 ft-lbs. (33~35 N·m)), and whether all
connections, positioning and locking mechanisms are normal, if any fault is found,
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