RXBEV operating modes
Combustion engine off
Electric driving
Power electronics 1 & 2
Electric motor
1 off
If the high-voltage battery is charged, the vehicle is
driven electrically with electric motor 2. Convenience
consumers (high-voltage heating system and high-
voltage air conditioner compressor) and the 12-volt
onboard supply battery are powered via power
electronics 2.
High-voltage
battery
supplies power
Electric motor 2 functions as the drive
Combustion engine running
lk
Electric driving and charging
Electric motor 1 runs as alternator
The high-voltage battery is discharged. The
combustion engine starts in order to continue the
journey. It drives electric motor 1 and thus charges
the high-voltage battery. Electric motor 2 is the sole
source of propulsion and the sole means of
regenerative braking.
High-voltage
battery
charging and
supplying
power
Electric motor 2 functions as the drive
Charging battery when vehicle is
Combustion engine running
stationary
Electric motor 1 runs as alternator
An external voltage source is not available to charge
the high-voltage battery.
In this case, the combustion engine can charge the
high-voltage battery via electric motor 1 while the
vehicle is stationary.
High-voltage
battery
is charged
Electric motor 2 off
External charging
Charging
contact
The high-voltage system and the complete drive are
deactivated. The high-voltage battery is charged via
the charging connection on the vehicle, the high-
voltage charger and the two charge protection
relays. The charging process is automatically
monitored and ended by the system.
High-voltage
battery
is charged
39
th
English 