BMW I01 Product Information page 70

I01￿High-voltage￿Components
4.￿Electrical￿Machine￿Electronics
resistor￿(switched￿in￿parallel).￿This￿enables￿a￿reliable￿discharge￿of￿the￿high-voltage￿electrical￿system￿if
the￿first￿two￿measures￿do￿not￿work￿for￿discharging￿due￿to￿a￿fault.￿The￿period￿up￿until￿the￿discharge￿to￿a
voltage￿below￿60 V￿is￿longer￿and￿is￿maximum￿120 s.
Discharge￿of￿the￿high-voltage￿link￿capacitor
Index
1
2
3
4
5
6
7
8
9
10
11
12
C
R
pass
R
act
64
Explanation
Electrical￿machine
Connection￿to￿the￿12 V￿vehicle￿electrical￿system
DC/DC￿converter￿in￿the￿EME
Electrical￿machine￿electronics￿(entirety)
High-voltage￿battery￿unit
EME￿control￿unit
Relay￿for￿short-circuit￿of￿the￿coils￿of￿the￿electrical￿machine
Relay￿for￿active￿discharging￿of￿the￿capacitors
Bidirectional￿DC/AC￿converter￿in￿the￿electrical￿machine￿electronics
SME￿control￿unit
Electromechanical￿switch￿contactor￿in￿the￿high-voltage￿battery￿units
High-voltage￿battery
Link￿capacitors
Passive￿discharge￿resistor
Active￿discharge￿resistor