BMW 3: New control units
Compared with the G20, a number of new control units have been installed in
the G20 PHEV.
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Electrical machine electronics
The function of the Electrical Machine Electronics (EME) is to activate and
regulate the permanently
excited synchronous machine in the high-voltage vehicle electrical
Convenience charging electronics
The convenience charging electronics enable communication between the vehicle
and charging
station of the AC voltage supply in order to charge the high-voltage batte
In the G20 PHEV an acoustic protection for pedestrians is used as standard.
To protect pedestrians
a distinctive sound created specially for electric BMW models is generated
during electric driving.
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It was necessary to adapt the IHKA to enable activation of the electric A/C
compressor (EKK) in all
operating conditions. The electric A/C compressor control unit communicates with
the IHKA via the
LIN bus.
To be able to show additional displays for driving readiness, electric driving,
brake ene
The high-voltage battery unit also has a signal connection, as well as the
high-voltage connection.
The high-voltage battery unit is integrated in the refrigerant circuit in order
for it to be cooled.
Connections of the SP41 high-voltage battery
Venting unit
Signal connector
Connections for