BMW I01 Product Information page 127

I01￿High-voltage￿Components
6.￿Charging￿the￿High-voltage￿Battery
• Wake-up￿lines￿to￿the￿BDC￿control￿unit￿and￿EDME￿control￿unit
• Control￿line￿from￿the￿LIM,￿with￿which￿the￿charging￿procedure￿is￿released
• Inputs￿and￿outputs￿of￿the￿circuit￿of￿the￿high-voltage￿interlock￿loop￿(KLE￿control￿unit￿evaluates
the￿signal).
The￿KLE￿control￿unit￿is￿supplied￿with￿voltage￿via￿terminal￿30￿and￿terminal￿30B￿and￿has￿two￿wake-up
line￿outputs.￿The￿convenience￿charging￿electronics￿can￿also￿wake￿up￿the￿control￿units￿in￿the￿vehicle
electrical￿system￿when￿the￿charging￿cable￿is￿connected.
Via￿the￿bus￿system￿PT-CAN2￿the￿KLE￿control￿unit￿receives￿the￿request￿and￿the￿control￿signals
for￿charging.￿There￿is￿also￿a￿line￿which￿is￿wired￿directly￿from￿the￿LIM￿to￿the￿convenience￿charging
electronics.￿Only￿when￿the￿LIM￿enables￿the￿charging￿procedure￿via￿a￿signal￿on￿this￿line,￿does￿the
convenience￿charging￿electronics￿start￿the￿voltage￿conversion￿and￿thus￿the￿charging￿procedure.
The￿high-voltage￿connectors￿of￿the￿convenience￿charging￿electronics￿are￿also￿integrated￿in￿the￿circuit
of￿the￿high-voltage￿interlock￿loop.￿Via￿the￿low-voltage￿connection￿the￿test￿signal￿is￿forwarded￿to￿the
high-voltage￿interlock￿loop￿and￿to￿the￿other￿high-voltage￿components.￿The￿KLE￿control￿unit￿monitors
the￿test￿signal￿and￿interrupts￿the￿charging￿procedure￿if￿it￿is￿not￿in￿the￿specified￿range.
High-voltage￿connections
There￿are￿three￿high-voltage￿connections￿at￿the￿convenience￿charging￿electronics￿to￿connect￿the
high-voltage￿cables￿to￿the￿charging￿socket￿(1￿x)￿and￿to￿the￿electrical￿machine￿electronics￿(2￿x).￿If￿the
I01￿vehicle￿is￿equipped￿with￿a￿range￿extender,￿the￿convenience￿charging￿electronics￿has￿another￿high-
voltage￿connection￿in￿order￿to￿connect￿the￿range￿extender￿electrical￿machine￿electronics￿REME.
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