I01�High-voltage�Components
5.�High-voltage�Battery�Unit
74
The�high-voltage�battery�unit�also�has�a�low-voltage�connection,�as�well�as�the�high-voltage
connection.�The�integrated�control�units�are�supplied�with�voltage,�data�bus,�sensor�and�monitoring
signals�via�this�interface.�It�is�incorporated�in�the�refrigerant�circuit�for�cooling�the�high-voltage�battery.
The�label�on�the�high-voltage�battery�unit�informs�people�working�with�these�components�about�the
technology�used�and�possible�electrical�and�chemical�dangers.
The�electrical�voltage�of�the�high-voltage�battery�unit�is�well�over�60 V.�This�is�why�
before�
any�work�at
the�high-voltage�battery�unit�the�
electrical�safety�rules
�must�be�observed:
1
Disconnect�the�system�from�the�power�supply
2
Provide�a�safeguard�to�prevent�unintentional�restarting
3
Establish�that�the�system�is�isolated�from�the�power�supply.
The�electrical�lines�(high-voltage�and�low-voltage),�as�well�as�the�refrigerant�lines,�can�be�disconnected
without�having�to�remove�the�high-voltage�battery�unit.
The�high-voltage�battery�unit�is�located�outside�the�passenger�compartment.�If�the�battery�cells
generate�excess�pressure�due�to�a�massive�fault,�the�arising�gases�cannot�be�transported�outwards�via
a�vent�pipe.�A�vent�hole�at�the�housing�of�the�high-voltage�battery�unit�is�sufficient�to�allow�pressure
compensation.
The�high-voltage�safety�connector�(Service�Disconnect)�is�not�an�element�of�the�high-voltage�battery
unit,�just�like�in�current�BMW�active�hybrid�vehicles.�It�is�located�below�the�engine�compartment�lid.
Содержание I01
Страница 1: ...Technical training Product information BMW Service I01 High voltage Components...
Страница 49: ...I01 High voltage Components 3 Electric Motor 43 System wiring diagram for the drive control...
Страница 178: ...I01 High voltage Components 12 Technical Safety Precautions 172 Main wiring diagram for high voltage interlock loop...
Страница 189: ......
Страница 190: ...Bayerische Motorenwerke Aktiengesellschaft Qualifizierung und Training R ntgenstra e 7 85716 Unterschlei heim Germany...