BMW I01 Product Information page 125

I01￿High-voltage￿Components
6.￿Charging￿the￿High-voltage￿Battery
Although￿the￿convenience￿charging￿electronics￿works￿at￿a￿high￿degree￿of￿efficiency￿of￿well￿over￿90%,
active￿cooling￿is￿required￿at￿full￿performance.￿For￿this￿reason￿it￿is￿integrated￿in￿the￿cooling￿circuit￿of￿the
electric￿motor.
In￿addition￿to￿the￿voltage￿conversion￿and￿energy￿provision,￿the￿convenience￿charging￿electronics￿also
assumes￿safety￿functions￿which￿protect￿the￿customer￿and￿Service￿employee￿from￿the￿dangers￿of
electricity.￿Nevertheless,￿the￿following￿applies:
The￿convenience￿charging￿electronics￿is￿a￿high-voltage￿component￿
Only￿qualified￿Service￿employees￿can￿work￿on￿the￿convenience￿charging￿electronics￿while￿observing
the￿repair￿instructions.
Before￿working￿on￿the￿convenience￿charging￿electronics,￿it￿is￿essential￿to￿observe￿the￿electrical￿safety
rules.
Similar￿to￿all￿high-voltage￿components,￿the￿convenience￿charging￿electronics￿can￿only￿be￿replaced￿in
Service￿if￿required,￿it￿cannot￿be￿opened￿or￿repairs.
The￿manufacturer￿of￿the￿convenience￿charging￿electronics￿is￿"Meta￿System".
Connections
The￿connections￿at￿the￿convenience￿charging￿electronics￿can￿be￿divided￿into￿four￿categories:
• Low-voltage￿connections
• High-voltage￿connections
• Connection￿for￿potential￿compensation￿line
• Connections￿for￿coolant￿lines.
The￿following￿graphic￿shows￿all￿connections￿of￿the￿convenience￿charging￿electronics:
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