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Operation flow chart
Power on self test
：
Make sure that AC input zero wire and DC output positive and negative
electrode wiring are correct, and that there is no short circuit in input and output; The input voltage
and frequency are normal; Always in a power-on state. Offline and online charging lines cannot be
connected at the same time.
Power on
：
Check whether the AC fan wind direction is correct after the power is on. The
touch screen can be turned on normally, communication with the charging machine is normal.
Connect battery
：
The battery voltage and current level meet the requirements of the charging
machine. Battery polarity is not reversed. The battery is in good condition.
Power off
：
After the charging current and voltage drop to 0, exit the battery. Turn off the AC
input air switch.
